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Document ID# 1749457 2004 Cadillac CTS Information on Upgrading Certain OnStar Generation 5 Analog/Digital-Ready Systems to OnStar Generation 6 Dual-Mode (Analog/Digital) #05-08-46-006E - (Jan 9, 2006) Information on Upgrading Certain OnStar Generation 5 Analog/Digital-Ready Systems to OnStar Generation 6 Dual-Mode (Analog/Digital) 2003-2004 Buick Rendezvous, LeSabre 2004 Buick Rainier, Regal 2004-2005 Buick Century 2002-2004 Cadillac DeVille, Seville 2003-2004 Cadillac CTS 2003-2004 Cadillac Escalade Models 2004-2005 Cadillac SRX (Built Prior to VIN Breakpoint 50169388), XLR 2005 Cadillac CTS (Built Prior to VIN Breakpoint 50162843), STS (with RPOs DD8 & TQ5), STS (with RPO DD7 or DD8) 2002-2004 Chevrolet Impala, Monte Carlo, TrailBlazer Models 2003-2004 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe 2003-2005 Chevrolet Cavalier, Venture 2004 Chevrolet Colorado

2004-2005 Chevrolet Malibu, Malibu Maxx 2005 Chevrolet Cobalt, Corvette, Equinox 2002-2004 GMC Envoy Models 2003-2004 GMC Savana, Sierra, Yukon Models 2004 GMC Canyon 2002-2004 Oldsmobile Bravada 2003-2004 Oldsmobile Silhouette 2003-2004 Pontiac Aztek, Bonneville 2003-2005 Pontiac Montana, Sunfire 2004 Pontiac Grand Prix 2005 Pontiac G6 2003-2004 HUMMER H2 This program is only available to dealers located in the United States. Canadian dealers will not be able to order upgrade kits at this time. This bulletin is being revised to update the models and information. Please discard Corporate Bulletin Number 05-08-46-006D (Section 08 - Body/Accessories). This bulletin is being issued to provide dealer personnel with information and procedures to follow should an owner wish to upgrade their OnStar Generation 5 analog/digital-ready system to an OnStar Generation 6 Dual-mode (analog/digital) system. Service Procedure Customers who wish to upgrade their vehicle to an OnStar Generation 6 Dual-mode (analog/digital) system will be required to purchase a 3-year, non-refundable subscription to OnStar. If they agree to this, they will be eligible for an upgrade, which will be provided to them at no additional cost. To participate in this program, the customer will pay the dealership for the 3-year subscription. Your

dealership's open account will be charged for the upgrade package so you must collect payment from your customer. The prices for the three upgrade packages are as follows: 3-year Safety and Security (S&S) ADT package: $549 plus tax (if applicable) 3-year Directions and Connections (D&C) ADT package: $1099 plus tax (if applicable) 3-year Luxury and Leisure (L&L) ADT package: $2159 plus tax (if applicable) Important: Dealers should not remit OnStar subscription-related taxes to their taxing authority as OnStar is responsible for tax remittance. Important: If the customer sells their upgraded vehicle prior to the end of the 3-year subscription, any unused whole months of their subscription can be transferred to their next NEWLY purchased or leased OnStar -equipped General Motors vehicle. Important: The new Dual-mode (analog/digital) OnStar Vehicle Communication Interface Module (VCIM) that will be installed into the customer's vehicle, as part of this upgrade, will have a new telephone number assigned to it. There is no way to transfer the customer's current telephone number to the new system. Important: Only vehicles listed in this bulletin will be eligible for the digital-upgrade program. You may also determine vehicle upgradeability by typing the VIN into the appropriate field on www. onstarenrollment.com. Technicians are to install the OnStar digital-upgrade kit using the following procedure: 1. If the customer's vehicle is listed in this bulletin and they have agreed to sign up for a 3-year, nonrefundable subscription to OnStar, an upgrade kit can be ordered by faxing in a form that is titled "Terms and Conditions of Your OnStar Service". This form can be obtained by calling the distributor, Autocraft, at 1-888-947-8100. This form can also be downloaded from Autocraft's website, www.aeorder.com. After this form is completely filled out, and the customer's signature is obtained, fax it to 972-466-6316. Please give a copy of this form to the customer and keep a copy for dealership records. An upgrade kit will be shipped out within 24 hours and a pre-paid return package label will be included for returning the customer's Generation 5 VCIM. Important: By returning the customer's original VCIM, you will avoid a significant non-return core charge. If you do not ship back the original VCIM within 30 days of kit order, your dealership will be charged for this VCIM.

2. Refer to the Parts Information table below to determine which OnStar upgrade kit to order. 3. Place the new OnStar Owner's Manuals from the upgrade kit in the customer's vehicle where they can review some of the new features of the dual mode (analog/digital) system. The continuous digit dialing feature should be highlighted to the customer to avoid a return to the dealership for dialing instructions. Discard any existing OnStar Owner's Manuals that may be in the customer's instrument panel compartment. 4. Prior to installing the new dual mode (analog/digital) VCIM, the technician must press the OnStar white dot button or the phone button. After the system responds, say "units". After the system responds, say "verify". Write down the number of units that are in the customer OnStar account. You will need this when you set up the new OnStar account. 5. Unscrew the existing analog OnStar antenna mast from the antenna base and discard. Screw in the provided analog/digital OnStar antenna mast into the antenna base. This step only applies to the following 2003 model year vehicles (skip to step 5 if the vehicle to be upgraded is not listed below). - 2003 Buick Rendezvous - 2003 Cadillac Escalade, Escalade ESV, Escalade EXT - 2003 Chevrolet Avalanche, Silverado, Suburban, Tahoe, Venture - 2003 GMC Sierra, Yukon, Yukon XL - 2003 HUMMER H2-2003 Oldsmobile Silhouette - 2003 Pontiac Aztek, Montana 6. Replace the existing OnStar analog on-glass antenna mast, inner coupler and outer coupler with the provided new digital antenna components. Refer to the antenna component replacement instructions in the Cellular Communication section of SI. This step only applies to the following vehicles (skip to step 6 if the vehicle to be upgraded is not listed below). - 2003-2004 Buick LeSabre - 2004 Buick Regal - 2004-2005 Buick Century

- 2002-2004 Cadillac DeVille, Seville - 2003-2004 Cadillac CTS - 2004 Cadillac SRX built prior to VIN breakpoint 40171353-2002-2003 Chevrolet TrailBlazer, TrailBlazer EXT - 2003-2004 Chevrolet Express - 2002-2004 Chevrolet Impala, Monte Carlo - 2003-2005 Chevrolet Cavalier - 2002-2003 GMC Envoy, Envoy XL - 2003-2004 GMC Savana - 2002-2003 Oldsmobile Bravada - 2003-2004 Pontiac Bonneville - 2003-2005 Pontiac Sunfire 7. The 2005 Cadillac STS kit may include a new inside rearview (ISRV) mirror assembly. If the kit you receive includes as ISRV mirror, please remove the existing ISRV mirror from the vehicle and install the one provided in the kit per the instructions in SI. 8. Replace the OnStar VCIM in the vehicle with the provided (analog/digital) VCIM. Refer to the Communication Interface Module Replacement procedure in the Cellular Communication section of SI. This kit may include a new VCIM bracket. If it does, use this new bracket on the vehicle and discard the original bracket. The VCIM may have a small jumper harness attached. If it does, plug the OnStar wiring connector into the connector of the jumper harness. 9. After the new VCIM is installed, the OnStar system must be reconfigured. Failure to reconfigure the system will result in an additional customer visit for repair. The OnStar LED light will remain red, and will not change to green, until the reconfiguration is completed. In addition, pressing and holding the white dot button on the keypad will NOT reset this version of the OnStar system. This action will cause a DTC to set. A. Install the scan tool to access and record and new Station ID (STID) and the Electronic Serial Number (ESN) from the new VCIM.

B. Move the vehicle to an open area that is away from tall buildings with a clear view of unobstructed sky. Allow the vehicle to run for 10 minutes. C. Use the special functions menu in order to begin the VCIM setup procedure for this vehicle. Note: Build GMC Sierra, Yukon and Denali models as Chevrolets. D. Following this VCIM Setup procedure, a call will automatically be made to the OnStar Call Center. Inform the Call Center Advisor of the following: Tell the advisor that this vehicle has received a new VCIM. Ask the advisor to update the customer account with the new STID and ESN. Ask the advisor to activate the OnStar Hands-Free Calling feature, if available. Tell the advisor the number of minutes (from Step 3) to load into the new module. Important: Please note that the OnStar Hands-Free Calling functionality will not be available until the following date. Follow any additional instructions from the OnStar advisor. E. After configuration, you must ask the OnStar advisor to transfer you to the OnStar Dealer Center (ODC). If you are disconnected, call the ODC at 1-888-ONSTAR-1 (1-888- 667-8271). Request that a 3-year Analog-to-Digital Transition (ADT) upgrade package be applied to the customer's account. All upgrade packages are dealer prepaid. The dealer's open account will be charged for the cost of the package plus any applicable taxes. The three Digital-upgrade packages that are available are: 3-year Safety and Security (S&S) ADT package 3-year Directions and Connections (D&C) ADT package 3-year Luxury and Leisure (L&L) ADT package F. End the call and cycle the ignition to clear the B1001 Diagnostic Trouble Code (DTC). 10. Have the Service Advisor, Service Manager or Sales Consultant review the new OnStar Hands- Free Calling procedure with the customer. The customer is used to their Generation 5 analog/ digital-ready OnStar Hands-Free Calling system, which uses individual digit dial to make a call. Generation 6 Dual-mode (analog/digital) uses continuous digit dial, and the customer needs to be made aware of this change. 11. Give the "OnStar Generation 6 Dual-Mode (analog/digital) Tip Sheet" to your customer. This tip sheet will help your customer better understand their new OnStar system. Also, fill out the form, entitled "GM Limited Warranty for Upgraded OnStar Digital Equipment Program Participants", and then give this to your customer. You may want to keep a copy for your records.

12. Collect payment from the customer. Your dealership's open account will be charged for the upgrade package so you must collect payment from your customer. The prices for the three upgrade packages are as follows: - 3-year Safety and Security (S&S) ADT package: $549 plus tax (if applicable) - 3-year Directions and Connections (D&C) ADT package: $1099 plus tax (if applicable) - 3-year Luxury and Leisure (L&L) ADT package: $2159 plus tax (if applicable) Important: GM employees or representatives or field personnel will not be able to help you or the customer pay for this program. If the dealership decides to pay for the upgrade program for their customer, be aware that your GM or OnStar contact will not be able to reimburse you for this cost. 13. Use labor code Z2096 to submit your claim for the labor time published below plus 0.2 hr Administrative Allowance and an additional $20.00 Net Amount. For claim submission, use Complaint Code MH -- Technical Bulletin, and Failure Code 93 -- Technical Service Bulletin. Important: Remember to return the customer's original VCIM to avoid a significant non-return core charge. If you do not ship back the original VCIM within 30 days of kit order, your dealership will be charged for this VCIM. Parts Information The following OnStar upgrade kits should be ordered by calling Autocraft at 1-888-947-8100. Remember, you will need to have the "Terms and Conditions of Your OnStar Service" form filled out and signed by the customer before Autocraft will ship a kit to you. These kits should not be ordered from GMSPO. Part Number 19115913 2004 Grand Prix 2005 Corvette 2005 Equinox Model Year and Vehicle Line

2004 H2 19115914 19115950 2004 Colorado 2004 Canyon 2003 Rendezvous 2003 Aztek 2003 Escalade/ESV/EXT 2003 Avalanche 2003 Silverado 19115951 2003 Suburban 2003 Tahoe 2003 Sierra 2003 Yukon/ XL 19115952 2003 H2 2003-2004 LeSabre 2004 Regal 2004-2005 Century 2003 CTS (built after and including VIN breakpoint 30148827) 19115551 2004 CTS 2003-2004 Express 2004 Impala, Monte Carlo 2003-2004 Savana 2003-2004 Bonneville

19115953 2003 CTS (built prior to VIN breakpoint 30148827) 19115553 2002-2003 Impala, Monte Carlo 2002 Deville 19115554 2003 DeVille (built prior to VIN breakpoint 3U261178) 2002 Seville 19115555 2003 Seville (built prior to VIN breakpoint 3U261889) 2004 SRX (built prior to VIN breakpoint 40171353) 19115954 2003 Trailblazer/EXT 2003 Envoy/XL 2003 Bravada 2002 Trailblazer/EXT 19115955 2002 EnvoyXL 2002 Bravada 2004 Escalade, Escalade ESV, Escalade EXT 19115912 2005 CTS (built prior to VIN breakpoint 50162843) 2004 Avalanche, Silverado, Suburban, Tahoe 2004 Sierra, Yukon, Yukon XL 2004 Rainier 2004 SRX (built after and including VIN breakpoint 40171353) 2005 SRX (built prior to VIN breakpoint 50169388) 19115503 2004 TrailBlazer, TrailBlazer EXT 2004-2005 Venture 2004 Envoy, Envoy XL, Envoy XUV

2004 Bravada, Silhouette 2004-2005 Montana 2004 Rendezvous 19115911 2004-2005 XLR 2004 Aztek 19115975 2005 STS with option DD7 2003 DeVille (built after and including VIN breakpoint 3U261178)Seville (built after and including VIN breakpoint 3U261889 19115549 2004 DeVille, Seville 2003-2005 Cavalier 2003-2005 Sunfire 19115505 2005 STS (with options DD8 & TQ5) 2005 STS (with option DD8) 19115502 2004-2005 Malibu, Malibu Maxx 2005 G6 2003 Venture 19115506 19115504 2003 Silhouette 2003 Montana 2005 Cobalt 2005 Pursuit Warranty Information Labor Operation Model Year and Vehicle Line Labor Time 2004-2005 Cadillac XLR 0.2 hr

2004 Pontiac Grand Prix 0.5 hr 2004 Buick Rainier 2005 Cadillac STS (with option DD8) 2004 Chevrolet Colorado 2004 Chevrolet TrailBlazer, TrailBlazer EXT 2003-2005 Chevrolet Venture 2005 Chevrolet Equinox 0.6 hr 2004 GMC Envoy, Envoy XL, Envoy XUV 2004 GMC Canyon 2004 Oldsmobile Bravada 2003-2004 Oldsmobile Silhouette 2003-2005 Pontiac Montana 2003-2004 Buick Rendezvous 2005 Cadillac CTS 2005 Chevrolet Corvette 0.7 hr 2003-2004 Pontiac Aztek 2003-2004 Buick LeSabre 2003-2004 Chevrolet Express 2003-2004 GMC Savana 0.8 hr 2003-2004 Pontiac Bonneville Z2096 OnStar Analog-to-Digital

Upgrade Kit-Install* 2002-2004 Cadillac DeVille 2005 Cadillac STS (with options DD8 & TQ5) 2005 Cadillac STS (with option DD7) 2002-2003 Chevrolet TrailBlazer, TrailBlazer EXT 0.9 hr 2002-2004 Chevrolet Impala, Monte Carlo 2002-2004 GMC Envoy, Envoy XL, Envoy XUV 2002-2004 Oldsmobile Bravada 2004-2005 Buick Century 2004 Buick Regal 2003-2004 Cadillac CTS 1.0 hr 2005 Chevrolet Cobalt 2002 Cadillac Seville 2003-2004 Cadillac Escalade, Escalade ESV, Escalade EXT, Seville 2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe 1.1 hrs 2003-2004 GMC Sierra, Yukon, Yukon XL 2004-2005 Cadilac SRX (built after VIN breakpoint 40171353) 1.3 hrs 2003-2004 HUMMER H2 1.4 hrs

2004 Cadillac SRX (prior to VIN breakpoint 40171353) 2003-2005 Chevrolet Cavalier 1.6 hrs 2003-2005 Pontiac Sunfire 2005 Cadillac SRX 2004-2005 Chevrolet Malibu, Malibu Maxx 1.7 hrs 2005 Pontiac G6 *This is a unique labor operation number for bulletin use only. This number will not be published in the Labor Time Guide. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these 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 bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION Copyright General Motors Corporation. All Rights Reserved. Document ID# 1749457 2004 Cadillac CTS