11/3/2017 Timing Chain TSB Title: F 03/03/2015 Engine - Timing Chain Kits and Chain Guide Replacement

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Paul Edwards
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1 Vehicle» Engine, Cooling and Exhaust» Engine» Timing Components» Timing Chain» Technical Service Bulletins» All Technical Service Bulletins» Engine - Timing Chain Kits and Chain Guide Replacement # F: Information on High Feature V6 Timing Chain Kits and Chain Guide Replacements, DTCs P0008, P0009, P0016, P0017, P0018 and/or P (Mar 3, 2015) Subject: Information on High Feature V6 Timing Chain Kits and Chain Guide Replacements, DTCs P0008, P0009, P0016, P0017, P0018 and/or P0019 Models: 2007 Buick Allure (Canada) (RPOs LY7) Buick LaCrosse (RPOs LY7, LLT, LF1) Buick Enclave (RPOs LY7, LLT) Cadillac STS (RPOs LY7, LLT) Cadillac SRX (RPOs LY7, LAU, LF1, LFX) Cadillac CTS (RPOs LY7, LP1, LLT, LF1) Chevrolet Captiva (RPO LY7) Chevrolet Equinox (RPOs LY7, LF1, LFW) Chevrolet Malibu (RPO LY7) Chevrolet Traverse (RPO LLT) Chevrolet Camaro (RPOs LLT, LFX) 2012 Chevrolet Impala (RPO LFX) GMC Acadia (RPOs LY7, LLT) GMC Terrain (RPOs LF1, LFW) Pontiac G6 (RPO LY7) Pontiac G8 (RPO LY7) Pontiac Torrent (RPO LY7) Saturn AURA (RPO LY7) Saturn OUTLOOK (RPOs LY7, LLT) Saturn VUE (RPO LY7) Equipped with 3.6L High Feature V6 Engine (VINs D, T, V, 3) Built After July 15, 2006 Attention: For 2007 Cadillac models, please refer to the most current version of Corporate Bulletin Number for early build timing chain identification. This Bulletin also applies to any of the above models that may be Export vehicles. This bulletin has been revised to update the Parts Information Part A table. Please discard Corporate Bulletin Number E. 1/13

Customer Care and Aftersales has released three timing chain service kits for the High Feature V6 engine applications available for use as of April 2012.

2 Customer Care and Aftersales has released three timing chain service kits for the High Feature V6 engine applications available for use as of April These comprehensive timing chain kits were designed to fulfill all the parts requirements necessary while servicing High Feature V6 engine applications from 2007 to These kits were developed with the latest product enhancement in mind, while reducing vehicle downtime for our customers at a very competitive price. These kits contain all of the necessary parts for repairing worn timing chains minus the RTV sealer and timing chain guides. These kits should be used on vehicles covered under the terms of the Powertrain Warranty coverage, Special Coverage terms. Please do not order or use parts separately while repairing a vehicle covered by warranty. These kits do not contain idler sprockets, camshaft actuator gears, crankshaft driven gear or the chain guides as these parts should not be replaced for a stretched timing chain setting DTCs P0008, P0009, P0016, P0017, P0018 and/or P0019. Idler gears, camshaft actuators, crankshaft driven gears and timing chain guides are being replaced unnecessarily and are not worn and should not be replaced. If this concern is encountered, follow the guidelines below to install the necessary timing chain service kit: Part A 2/13

When replacing timing chain kits, the timing chain guides should not always be replaced; they should only be replaced in cases where the guide wear block surface is worn down into the base friction

3 When replacing timing chain kits, the timing chain guides should not always be replaced; they should only be replaced in cases where the guide wear block surface is worn down into the base friction material, leaving friction wear witness marks. Refer to the above pictures showing an example of normal wear (1) which should not be replaced, and a worn guide (2) which should be replaced. Part B While the engine is disassembled, refer to Global Warranty for the vehicle build date. If the vehicle was built before 06/05/2009, also inspect the camshaft saddle caps. 3/13

4 If the subject cylinder head is of the 2nd design shown above (2), no further action is required for this section of the bulletin listed as part B. 4/13

For 1st design shown, visually inspect for teflon camshaft thrust washers being present between the camshaft actuator and the saddle cap. 1st design (1) is for both intake and exhaust.

5 For 1st design shown, visually inspect for teflon camshaft thrust washers being present between the camshaft actuator and the saddle cap. 1st design (1) is for both intake and exhaust. Refer to the examples: Inspection of the 1st design Saddle Cap with no Teflon washer present 5/13

5 screw design uses P/N12630941 thrust washer http://repair.alldata.

6 5 screw design uses P/N thrust washer 6/13

4 screw design uses P/N12632859 thrust washer Install one camshaft thrust washer between each camshaft and actuator if not present.

7 4 screw design uses P/N thrust washer Install one camshaft thrust washer between each camshaft and actuator if not present. Part C Is the vehicle a Buick Enclave, GMC Acadia, Chevrolet Traverse, Saturn OUTLOOK or Chevrolet Malibu or Pontiac G6? If YES, then replace the PCV foul air tube and bank 2 rocker cover following the procedures below: Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK 1. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 2. Replace the bank 1 camshaft cover gasket. 3. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10N.m (89 lb-in). 4. Replace the bank 2 camshaft cover and replace the camshaft cover gasket. 5. Reassemble the bank 2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10N.m (89 lb-in). 6. Install the insulated PCV tube. 7/13

8 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK 1. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 2. Replace the bank 1 camshaft cover gasket. 3. Reassemble the bank 1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10N.m (89 lb-in). 4. Replace the bank 2 camshaft cover and replace the camshaft cover gasket. 5. Reassemble the bank 2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10N.m (89 lb-in) Enclave, Malibu, Traverse, Acadia 1. Remove the bank 2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank 2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank 2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10N.m (89 lb-in). Part D Does the vehicle have the latest calibration update for Oil Life Monitor? Refer to Global Warranty for calibration completions in paid warranty claims. If NO, reprogram the vehicle with the latest calibration for Oil Life Monitor enhancement - Reference Field Actions 11083, 10287C and PI /13

9 Parts Information 9/13

Parts Information Part A Parts Information Part B http://repair.alldata.

10 Parts Information Part A Parts Information Part B 10/13

11 Parts Information Part C Parts Information Part D No Parts are used- Obtain the latest Calibration from TIS2WEB. 11/13

12 12/13

13 Warranty Information Disclaimer 13/13

If this concern is encountered, follow the guidelines below to install the necessary timing chain service kit:

If this concern is encountered, follow the guidelines below to install the necessary timing chain service kit: Models: Attention: 2007 Buick Allure (Canada) (RPOs LY7) 2007-2012 Buick LaCrosse (RPOs LY7, LLT, LF1) 2008-2012 Buick Enclave (RPOs LY7, LLT) 2007-2011 Cadillac STS (RPOs LY7, LLT) 2007-2012 Cadillac