All-New 2014 Impala. Three Engine Options. Contents
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1 All-New 2014 Impala April 2013, Volume 15, No. 4 The all-new 10th generation Impala has arrived. It s based on GM s award winning global Epsilon II architecture and will be offered as LS, Eco, LT and LTZ models. The Impala is packed with a number of innovative technologies. Available features include Adaptive Cruise Control, Automatic Collision Preparation, Collision Mitigation Braking, Forward Collision Alert, Lane Departure Warning, Side Blind Zone Alert, Rear Cross Traffic Alert, Rear Vision Camera with Dynamic Guidelines, and the Brake Preparation feature. The Impala uses GM s Global A electrical architecture that requires the use of the Global Diagnostic System 2 (GDS 2) software and the Multiple Diagnostic Interface (MDI) module. Three Engine Options All three of the 2014 Impala engines feature Double Overhead Camshafts (DOHC), Variable Valve Timing (VVT) and Direct Injection (DI). The standard 2.5L 4-cylinder ECOTEC engine (RPO LKW) produces 195 hp and is paired with the Hydramatic 6-speed 6T45 automatic transmission (RPO MH7). Intake Valve Lift Control technology on the 2.5L 4-cylinder engine contributes to improved fuel economy by enabling variable intake valve lift, duration and timing over a wide range of engine operation, controlled by the ECM. In low-lift mode, the engine pumps only the air it needs to meet the driver s demand. As needed, the high-lift mode provides the full output capability of the engine. An innovative rocker arm switches between low and high lift intake cam profiles to provide variable valve lift. The mechanism is actuated by an oil control valve through a dual-feed stationary hydraulic lash adjuster. It is the first of its kind for low friction roller-type fingerfollower valvetrains in gasoline engines. The optional 3.6L V6 flex-fuel engine (RPO LFX) generates an estimated 303 hp and is coupled with the Hydramatic 6-speed 6T70 automatic transmission (RPO M7W). Contents All-New 2014 Impala MDI Manager Software Update Various Electrical Conditions on Acadia, Enclave and Traverse Automatic Transmission Shifter Operation Cleaning Engine Gasket Sealing Surfaces... 4 The Job of Magnetic Drain Plugs... 5 ATS Base Radio Conditions... 5 Void in Carpet Service 4-Wheel-Drive Message Fluid in Spark Plug Tubes... 6 Front Wheelhouse Flange Installing the Rear Window to the Window Regulator Assembly Steering Wheel Controls Backlighting Camaro Convertible Roof Rivet Replacement Loss of Rear Trim Height Updating Navigation Map Discs Car Issues Fix It Right the First Time Truck Issues Fix It Right the First Time Service Know-How... 9 Customer Care and Aftersales continued on page 2
2 All-New 2014 Impala continued from page 1 screen features gesture control similar to smartphones that allows for swiping of content. Arriving later in the year, the Eco model with eassist (hybrid propulsion system RPO HP6) features the 2.4L 4-cylinder ECOTEC engine (RPO LUK), producing an estimated 182 hp. It s coupled with the Hydramatic 6-speed 6T40 automatic transmission (RPO MHH). Electronically Controlled Shutters On four-cylinder models, electronically controlled shutters in the lower grille manage the airflow going underhood based on engine cooling needs. At typical highway driving speeds, the shutters close and push more air over and around the vehicle, helping to increase aerodynamic efficiency and enhancing fuel economy. Active Noise Cancellation Four-cylinder models also feature Active Noise Cancellation, which combats engine noise with interior-mounted microphones that detect engine noise. The frequency of the noise is processed by a computer that directs counteracting sound waves through the audio system s speakers and subwoofer to cancel the noise. Brake Preparation Uplevel Impala models equipped with 20-inch wheels have the Brake Preparation feature that quickens brake response time and helps shorten stopping distances. Whenever the driver lifts off the accelerator pedal, hydraulic pressure in the brake lines is slightly increased to load the brake calipers in anticipation of hard braking. On models with the available Hill Start Assist feature, braking pressure is temporarily held to prevent the vehicle from rolling forward or rearward on a grade during vehicle drive off. The brakes automatically release within two seconds of releasing the brake pedal, after which the vehicle may begin to roll. TIP: Hill Start Assist will not activate if the vehicle is in a drive gear and facing downhill or if the vehicle is facing uphill and in reverse gear. However, it will activate on the Eco model while in gear and facing downhill to assist in allowing a smooth auto start. Infotainment Two different radio systems are featured. LS models have a 4.2- inch color display. All other models feature the Chevrolet MyLink system with an 8-inch motorized color touch screen display with an illuminated storage space concealed behind it. The touch The MyLink system has the ability to pair up to five Bluetooth-enabled mobile devices. For assistance with Bluetooth pairing and mobile device compatibility, direct customers to (U.S. website). Antennas The upper gridlines on the rear window are AM-FM antenna lines and are not intended to heat when the defogger is activated. The multi-band roof antenna is for OnStar, SiriusXM Satellite Radio, and GPS. Reception may be affected by an open sunroof. Keyless Access System The available Keyless Access System enables operation of the ignition and doors when the key fob is within 3 feet (1 m) of the door being unlocked or the trunk. The touchpad for the trunk, located above the license plate, is only included on vehicles with the Keyless Access System. It may be necessary to hold the touchpad for approximately 2-3 seconds to open the trunk. The door key cylinder is located behind the cap on the door handle. Head Restraints To adjust the optional four-way head restraints for the driver and front passenger seats up, down or rearward, press the button on the side of the head restraint. To adjust the head restraint forward, simply pull it forward to the desired position. Exterior Moldings The bright metal moldings on the Impala are aluminum. To prevent damage, use a cleaning solution approved for aluminum. Do not use chrome cleaners or cleaners not intended for automotive use. Do not apply any cleaning solutions until the molding is cool to the touch. Training Information For more details on the 2014 Impala, refer to #PI0915, which includes a list of training courses related to the new Impala. Thanks to Frank Jakubiec and Chris Hightower 2 April 2013
3 TECHLINEnews MDI Manager Software Update Multiple Diagnostic Interface (MDI) Manager Update Version was released on March 11, An issue was identified after the release into production that had the potential to delete the network settings on the MDI and cause other undesirable circumstances. Due to this issue, the software was pulled from production. An update to the MDI Manager, version , is now available. This software addresses the issues encountered with version If you are updating to this version and are encountering issues, please contact the Techline Customer Support Center (TCSC) at (French: ). During any software update of the MDI there is the potential that the network settings may be lost. This is not a normal occurrence. As a precautionary measure, connect the MDI directly to your PC via the USB cable and launch the MDI Manager to check the network settings tab. Write down any manually entered IP address information and wireless access point settings from this tab. If your settings are lost during an update, use this information to manually enter back into your MDI. You may need to consult with your IT contact within the dealership to determine your wireless access point password to reconnect the MDI if your settings are cleared by an update. Thanks to Chris Henley Various Electrical Conditions on Acadia, Enclave or Traverse Some 2013 Acadia, Enclave or Traverse models may exhibit one or more of the following conditions: Vehicle will not crank and start Warning MILs illuminated Incorrect HVAC operation Multiple communication U DTCs Various DTCs set Open fuse in the underhood electrical center ECM 15 amp fuse E55AF open These conditions may be caused by damage to the engine wiring harness at the right rear side of the engine compartment. The harness may have chafing or damage to the wires at the power steering bracket or line. If the Service Information diagnostics do not isolate a cause for this concern, inspect the wiring harness for a potential short-to-ground at the right rear side of the engine compartment about six inches from Check the engine wiring harness at the steering line or steering line bracket. the pass-through where the harness may contact the steering line or the steering line bracket. Repair any damaged wires by following the appropriate Service Information repair procedures. In addition, follow this procedure to re-route the engine harness: 1. Remove the nut for the A/C line retainer found on the front of dash above the harness pass-through. 2. Remove the nut for the retainer of the same A/C line located on the frame rail on the right side of the engine compartment. 3. Move the A/C line enough to access the harness retainer nut located on the right frame rail. 4. If there is a nut on the harness retainer, loosen the nut. If there is not a nut on the harness retainer, add a 10mm nut to the stud and tighten it finger tight. 5. Pull the harness toward the engine where it is routed up along the strut tower. This will rotate the harness on the weld stud and provide clearance between the harness and the power steering cooler pipe. 6. While pulling on the harness, tighten the harness nut to hold the harness in that orientation. 7. Reinstall the A/C line retaining nuts and check the harness for sufficient clearance to the power steering pipes. Thanks to Jim Miller Automatic Transmission Shifter Operation Shift rod end and joint A higher effort may be required to shift between gears on some 2013 Camaros equipped with an automatic transmission. This condition is usually noticed on cars equipped with a V6 engine, but also may be found in cars equipped with a V8 engine. If this condition can be duplicated, inspect the end of the automatic transmission shift rod to see if it pivots freely. To perform the inspection, the automatic transmission range selector rod must be disconnected from the transmission. First remove the manual shift shaft nut followed by removing the shift control linkage from the transmission. Next, feel if the end of the rod pivots freely back-and-forth easily. If the rod will not pivot easily, lube the joint and move it back-and-forth several times. If the rod still will not pivot easily, replace the shifter rod assembly. TIP: It has been found that the automatic transmission shifter assembly is not the likely cause of this condition. Thanks to Matt Bierlein April
4 Cleaning Engine Gasket Sealing Surfaces When cleaning engine gasket sealing surfaces or cleaning parts from an engine that are to be reused, do not use surface conditioning discs. These discs can cause damage to the sealing surface or generate debris that will cause damage to bearing surfaces in cast iron and aluminum engine blocks. In fact, these discs should not be used on any sealing surfaces, including transmissions, transfer cases and axles. The feel of the sealing surface is critical, not the appearance. After proper cleaning of an engine, there will be indentations from the gasket left in the cylinder head with all the gasket material removed. The new gasket will fill these small indentations when it is installed. Abrasives Cause Engine Damage Abrasive pad or bristle devices typically made of woven fiber or molded bristles should not be used because: Abrasive pads will produce fine grit that the oil filter will not be able to remove from the oil. This grit is abrasive and has been known to cause internal engine damage. Abrasive pads can easily remove enough material to round cylinder head surfaces, which can affect the gasket s ability to seal, especially in the narrow seal areas between the combustion chambers and coolant jackets. Abrasive pads, wire, and rubber finger wheels can remove enough metal to affect cylinder head, block, oil pan rail, and intake manifold runner flatness, which can cause coolant and oil leaks and air leaks. It takes about 15 seconds to remove mm (0.008 in.) of metal with an abrasive pad. Abrasive pads, rubber finger wheels and wire wheels with highspeed grinders produce air-borne debris that can travel throughout the shop and contaminate other work being performed outside of the immediate work area. Do not use surface conditioning disks. When using surface conditioning discs that contain abrasives, aluminum oxide (a common component of sandpaper) is dislodged from the disc along with metal particles from the engine component. Even the finger-type discs, which don t appear to have any type of abrasive material, contain aluminum oxide. The presence of aluminum oxide in engine oil has been shown to cause premature engine bearing failure, in some cases, in as little as 1,000 miles (1,600 km) or less after the repair has been made. Surface conditioning discs also may grind the component material and imbed it into the disc. This can result when more aggressive grinding of the gasket surface takes place. Any debris from these surface conditioning discs cannot be properly cleaned from the oil passages with shop air or solvents. Recommended Cleaning Procedures GM recommends the use of a plastic razor blade or plastic gasket scraper to clean the gasket surface on engine components that are to be reused. Do not use a metal razor blade, which can easily gouge the sealing surface, especially on aluminum components. When using a razor bladetype gasket scraper, use a new razor blade for each cylinder head and corresponding block surface. Hold the blade as parallel as possible to the gasket surface to ensure that the razor blade does not gouge or scratch the gasket surfaces. Do not gouge or scrape the combustion chamber surfaces or any engine-sealing surface during the cleaning process. To properly clean the sealing surface prior to reassembly, GM Low VOC Cleaner, part number (in Canada, part number ), should be sprayed on the mating surface. Avoid getting solvent in any area other than the mating surface to be cleaned. Allow it to soak in for several minutes to loosen the old RTV sealer/gasket material before using a razor blade or non-metallic scraper to remove all loose sealer/gasket material. For additional information, refer to GM Bulletin # D. GM s position against the use of surface conditioning discs has been in place for more than 10 years. Engine assembly replacements where the discs have been used in the repair may result in a dealership debit. Thanks to Randy McCrite Abrasive discs can remove enough metal to cause leaks. 4 April 2013
5 The Job of Magnetic Drain Plugs Magnetic drain plugs in drive axles, transmissions and transfer cases are designed to attract metallic particles generated during normal operation and prevent them from passing through the gears or bearings. During service repairs and maintenance, inspect the drain plug for large metal deposits. Small metal flakes and fine metal dust on the plug magnet are considered normal. Large metal deposits or particles on Normal amount of debris on a drain plug. the plug magnet, such as gear teeth, bearing fragments and large metal shavings, are not a normal condition. If these conditions are found, repairs may be needed to prevent further component damage. What to Look For When inspecting metallic particles on a plug magnet, it s important to determine the size and source. Fine Metal Particles Fine metal particles are normal and are the result of internal component wear, which can shed fine metallic particles at a steady rate. An abnormal amount of debris with large metal shavings on a drain plug. Metal Shavings Metal shavings, which are often remnants from the housing machining process, may adhere to the plug magnet. These shavings are not detrimental to component operation and do not require component replacement. Bearing and Gear Teeth Fragments Fragments from bearings and gear teeth indicate component damage that is not considered normal. Components should be inspected for damage and repaired as needed. Fluid Conditions Fine metal particles The color of the fluid can be an indicator of contamination; however, some colors can be easily confused with the normal color of some fluids. New fluid is usually red or light brown. With time and miles, used fluid often turns black. This is a result of the normal chemical process that occurs as the additive package in the fluid degrades. The black color does not indicate that the fluid s useful life has been exhausted. When a fluid is a milky brown color, it may indicate that the fluid is contaminated with significant moisture. The fluid should be changed. Water contamination of the axle lube also creates significant odor and forms corrosive conditions that will cause internal components of the axle to corrode. Milky-colored fluid combined with rust particles is a sign of moisture contamination either from submersing the axle vent, a pinched or misrouted vent hose, or a failed seal that is allowing moisture to enter the axle. Under 5000 miles (8,000 km) of operation, hypoid axle lube may appear tinted and have a whitish or yellow appearance from the gear marking compound used in the production of the axle. Thanks to Dave Peacy and David MacGillis ATS Base Radio Conditions On 2013 ATS models built prior to February 19, 2013 equipped with the base radio (RPO RAO) and without the color touchscreen (RPO UA3), one or more of the following conditions may be present: Unable to adjust the radio volume Previous station is not retained after an ignition cycle 87.9 FM and a time of 12:00 are displayed after an ignition cycle Display randomly locks up and the HVAC displays only HI or LO when changing the temperature (the temperature changes but the display stays at HI or LO) Loss of radio presets Screen doesn t return to previous selection (such as the radio), after an OnStar call is made Do not replace any parts for these conditions. Revised calibrations are now available. Reprogram the radio with the latest calibrations available in TIS2Web. Thanks to David Antal April
6 Void in Carpet The 2013 ATS built prior to December 21, 2012 may have an oval cutout or void in the carpet on the passenger s side of the center console. The carpet is cut correctly and does not need to be replaced. Instead, the carpet fit must be finessed. Remove the console to allow the carpet to rise to the proper position and then reinstall the console. If the carpet does not come up enough for the cutout to be covered, the seat may need to be removed to allow the carpet some slack. (Refer to #PIC5807 before removing the seat bolts.) If the carpet does not stay up under the console, foam may need to be added under the carpet on the floor near the console. Without the foam, the carpet is allowed to be pushed down and pulls the cutout with it. Thanks to David Antal Void in carpet If needed, position the cutout (1), add foam under the carpet (2). Service 4-Wheel-Drive Message A Service 4-Wheel-Drive message may be displayed on the Driver Information Center and DTC C0327 (Encoder Circuit) may be set as a current or history DTC in the Transfer Case Control Module on some Colorado and Canyon four-wheel-drive models. This intermittent condition may happen mostly on an initial drive cycle or after several hours of sitting in cold or damp conditions. It also may occur occasionally when attempting to shift into or out of four-wheel-drive. This condition may be easiest to duplicate under high electrical load conditions, such as when starting the engine or shifting the transfer case. If a root cause is not determined after following the Service Information diagnostics, inspect circuit 550, ground circuit for the transfer case encoder motor channel circuits. Also check connector 2, terminal F7, in the underhood bussed electrical center. Check for proper terminal tension and corrosion and replace if necessary. Thanks to Steve Schipansky Fluid in Spark Plug Tubes A Check Engine light may be illuminated with misfire DTCs set, or a possible oil or coolant leak may be found, on some Enclave, LaCrosse, CTS, SRX, Camaro, Equinox, Traverse, Acadia, Terrain; Caprice PPV, Captiva, Impala; 2013 ATS and XTS models equipped with 3.0L and 3.6L (RPOs LF1, LFW, LLT, LFX) HFV6 engines. On inspection, coolant or oil may be found in a spark plug tube. Determine if the oil or coolant is coming from the spark plug tube and not leaking into it from above. If the spark plug tube is leaking, replace the cylinder head, spark plug and coil. Porous spots in the head created during manufacturing cause the leak. The spark plug tubes are permanently sealed into the head and are not replaceable. If a cylinder head is replaced for this condition, mark the faulty spark plug tube before sending the head in for warranty or core so GM Engineering or the re-manufacturing facility can identify it. Thanks to Aron Wilson 6 April 2013
7 Front Wheelhouse Flange On some 2013 Malibus, the front carpet and/or floor may be wet. The water on the floor may be due to a void in the sealer of the front wheelhouse flange. Seal the void using a thumb grade sealer (also referenced as a heavybodied caulking material in the Service Information). Push the Location of wheelhouse flange. sealer into the void from the wheel opening. Thanks to Christopher Crumb Installing the Rear Window to the Window Regulator Assembly After removal of a rear door window or rear window regulator on Malibu, G6 and AURA models, the retaining pins may be difficult to reassemble in the door. Follow these steps to reinstall the window glass to the regulator: 1. Remove the window from the door. 2. Position the window glass retaining pin in the window hole. Make sure the pin is centered in the opening. 3. Press the expansion pin back into the retaining pin. This will lock the pin into position in the window. 4. Reinstall the window into the door. 5. Push the window and pin down into the groove of the window regulator. A loud audible crack or snap should be heard, which confirms the window assembly is properly seated in the window regulator assembly. Thanks to Christopher Crumb Steering Wheel Controls Backlighting Camaro Convertible Roof Rivet Replacement For Camaro Convertible models, the Electronic Parts Catalog (EPC) may show multiple different rivet sizes, which may not make it clear which rivet is needed for each location in the roof. Use the illustration to obtain the correct rivet for the repair being performed. Vehicles built prior to September 27, 2012 do NOT have backlighting in the steering wheel controls The backlighting on the steering wheel controls on some 2013 Sparks may appear to be inoperative but are working on other vehicles. Vehicles built prior to September 27, 2012 do NOT have backlighting in the steering wheel controls. This feature cannot be added to the vehicle. If the vehicle was built after September 27, 2012, follow published diagnostics in the appropriate Service Information if the backlighting on the steering wheel controls is not working. Thanks to Ernest Haller #1 Part Number #2 Part Number Thanks to Jeremy Richardson April
8 Loss of Rear Trim Height GM TechLink is published for all GM retail technicians and service consultants to provide timely information to help increase knowledge about GM products and improve the performance of the service department. Publisher: John Meade GM Customer Care and Aftersales Editor: Lisa G. Scott GM Customer Care and Aftersales Technical Editor: Mark Spencer Production Manager: Marie Meredith Desktop Publishing: 5by5 Design LLC FAX number: Write to: * TechLink PO Box 500 Troy, MI GM TechLink on the Web: : GM GlobalConnect General Motors service tips are intended for use by professional technicians, not a do-it-yourselfer. T hey are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the information applies to your vehicle or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information. Inclusion in this publication is not necessarily an endorsement of the individual or the company. Copyright 2013 General Motors All rights reserved. On the 2013 XTS, it may be noticed that the vehicle is sitting lower after being parked for several days or more. Normal diagnostics for Air Suspension Air Leaks or Low/Uneven Trim Height may be completed with no trouble found. Under normal conditions, it is typical for the air suspension system to drop up to 0.5mm of trim height per 24-hour period. Changes in temperature also can affect trim height. The trim height can be expected to drop as much as 2.6mm for every 10 F (5.6 C) drop in ambient temperature. It should be considered normal operation if a vehicle loses trim height when parked and unused for several days, but achieves and maintains normal trim height when cycling the ignition and using the vehicle regularly. No repairs should be attempted. Remind customers that cycling the ignition or starting the vehicle will bring the trim height back to a normal level. Thanks to David Antal Updating Navigation Map Discs Because location information on a vehicle s navigation system ages at a rate of 10-20% per year, customers will occasionally want to update the data in their navigation system to be sure it has the latest information (streets, points of interest, etc.). The GM Navigation Disc Center has the latest information on map versions and compatibility. Map updates can be purchased two ways: Call the GM Navigation Disc Center at Visit the website gmnavdisc.com Refer to Bulletin # F for the latest model year and update information. Customer Pay GM offered a Navigation Disc Update Program for 2006 and 2007 model year vehicles. Customers who purchased vehicles with navigation systems were eligible for two free map updates. This program concluded on December 31, The DVD Navigation Update Program policy has expired. Communications were sent to 2006 MY and 2007 MY vehicle owners when the program ended, informing them that they are no longer eligible for free annual updates. Warranty Discs There is no longer a reduced price offered to dealerships for warranty discs. Discs required for warranty repairs must be purchased at the retail price. The maximum allowance for warranty reimbursements has been revised to reflect the change in pricing. gmnavdisc.com Advanced Vehicle Navigation Software Update Discs When a navigation radio technical service bulletin is issued, it may contain instructions to install an Advanced Vehicle Navigation (AVN) software update with a specific part number. GM dealerships must order AVN software update discs from the GM Navigation Disc Center, as directed in the specific bulletin. TIP: AVN software update discs are to update the navigation radio software only. They do not update or replace the navigation map disc that is supplied with the vehicle. Please order these parts only as needed. There is a limited supply of these discs available, so dealerships may order only one copy of a specific part number. The AVN software update discs can be used to reprogram more than one vehicle. Thanks to Hassan Abdallah 8 April 2013
9 Car Issues Fix It Right the First Time Model Year(s) Vehicle Line(s)/Condition Do This Don t Do This Reference Information/Bulletin 2013 Spark Intermittent lack of power, transmission will not shift, PRNDL goes blank or DTC P0705 Inspect, clean and add die-electric grease to the connector. Replace the PNP Switch. PIP Sonic, Cruze Updated timing belt replacement procedure in SI Replace the idler pulley and belt tensioner along with the timing belt when doing a maintenance repair. Replace the belt tensioner and idler pulley on a warranty repair unless they are defective. PI Encore, Sonic, Cruze Check Engine light on with DTC P1101 set Check throttle position angle with GDS 2. Smaller percentage angles would indicate an air leak into the intake from another location other than through the throttle body. Replace the PCV pipe without checking throttle position and verify they are corrected when the new pipe is installed. A normal reading will indicate the air leak was repaired. PI Outlook, G6, Acadia, Traverse, Malibu, Enclave MIL on, poor acceleration, throttle body freezing, multiple DTCs set, ice deposits and/or oil deposits present in air inlet duct The timing chain guides should not be replaced; they should only be replaced in cases where the tensioner guides have worn down into the base material and are worn to the outer edges. Clean and reuse chain tension guides that are not deeply grooved or worn to the outer edges. PI0746C Camaro Squeak/creak type noise from driver and/ or passenger seat track front mounting area Install the seat track spacer. Replace the seat track or seat frame. PI Cruze Pulsating/rotational noise from right rear of vehicle on brake apply Replace right rear brake drum with P/N and install new shoe kit. Don't turn drum or replace shoes only. PI Verano Service Engine Soon light on with DTCs P0171, P1101, and/or P0101 set Inspect for loose clamp on air cleaner duct. Don t replace MAF sensor. PI Verano Service Engine Soon light on with DTC P0137 set Inspect H02 sensor wire harness for contact with axle shaft and repair per PI. Don t just replace the fuse associated with H02 sensor. PI XTS Ventilated seat fan clicking or ticking noise when operating Repair seat fan. Remove any material in contact with the fan that could make noise. Replace the seat cushion. PI0925 Truck Issues Fix It Right the First Time Model Year(s) Vehicle Line(s)/Condition Do This Don t Do This Reference Information/Bulletin Terrain, Equinox Fuel gauge intermittently does not read full when fuel tank is filled Reroute fuel feed line and wire harness away from fuel module float arm travel. Replace the primary fuel pump module. PI Terrain, Equinox Steering shudder (vibration) during slow speed maneuvers Follow the procedure to replace the steering and alternator. Revised to include vehicles that are built after January 6, 2013 will not require Evaporative Emission Canister Purge hose or clip/clamp installation. Replace the steering gear or pump assembly. PI0814B 2013 Terrain, Equinox Service Stabilitrak or Antilock Brake System warning lamp illuminated Check the suspect wheel speed sensor connector for harness terminals not being fully seated. Replace the rear wheel speed sensor. PI Sierra, Silverado, Savana, Express Exhaust leak or vibration/rattle noise at approximately 900 rpm, fuel smell, white smoke, oily substance on exhaust downpipe Align the exhaust and install gasket kit Replace exhaust system components needlessly. PI0235F 2012 Traverse, Enclave, Acadia Lack of power and/or hesitation from a stop, engine noise Thoroughly clean the PCV tubes and orifice before installing assembly parts. Failure to thoroughly clean Tubes and PCV orifice will affect operation and repair outcome. PI D Emerging Issues April 11, 2013 Customer Care and Aftersales Service Know-How To view Emerging Issues seminars: Log in to Select Resources, and then Video on Demand; or Select Catalog to search for the course number, and then select View > Take or Continue Course April
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