For 1990-2009 cars

# 19 Inch Accessory Wheels Available Through GM Accessories

Subject: | 19 Inch Accessory Wheels Available Through GM Accessories

Models: | 2008-2009 Buick Enclave

| 2007-2009 GMC Acadia

| 2007-2009 Saturn OUTLOOK

This bulletin is being revised to add the 2009 model year. Please discard Corporate Bulletin Number 06-03-10-012B (Section 03 -- Suspension).

The purpose of this bulletin is to provide a reference guide for the technician to upgrade a vehicle from factory wheels and tires to 19" wheels and tires, which are available through GM Accessories. This guide will cover tires, wheels, vehicle modifications, and warranty information.

### Tires

GM offers two tires; the Goodyear Eagle RSA P255/60R19 108H AL3, GM P/N 19162231 (Acadia, OUTLOOK) and the MIchelin Latitude TR P255/60R19 108S ALS, GM P/N 19162478 (Enclave only), to be used in conjunction with the 19" accessory wheels. The Goodyear Eagle RSA tire has a Tire Performance Criteria (TPC) spec of 1263MS and the MIchelin Latitude TR has a TPC spec of 1278MS, which meets or exceeds all Federal Safety guidelines.

#### Tire Changers

Dealers must have the correct level of tire changing equipment to perform tire changing services. GM requirements and recommendations for servicing glamour wheels are as follows:

• | Rim Clamp design

• | Runflat capable (preferred)

• | Side mounted bead breaking to reduce stress on the wheel and tire

• | No metal contact to the wheel at the clamping jaws

• | Protective devices to prevent damage during mounting and dismounting operations

• | Regulated air pressure to protect user and wheel assembly

• | Approved lubricant to avoid wheel slip and damage to the wheel

For further information regarding equipment meeting the requirements for this program, call 1-800-GM-TOOLS.

Important: When mounting the tires, rubber lubricant, GM P/N 12345884 (in Canada, 5728223), must be used. Also, the vehicle should not be driven aggressively (hard acceleration or braking) for at least 6-8 hours after tire mounting to allow the lubricant to dry. Failure to do so may cause the tire to slip on the rim. This condition will affect wheel balance which could result in a vibration.

#### Balancing

MC style coated weights are recommended and will provide the best balancing of the tire-wheel assembly. If stick-on weights are used, be sure to follow the manufacturers' recommended installation procedure making sure the surface is clean and dry. Using the incorrect type of weights could result in improper fit, and such weights may fall off the wheel.

Balancing of the tire and wheel assembly must be performed on a computerized balancer, capable of static and dynamic wheel balance modes. Assemblies should be balanced to within 1/4 ounce on either rim flange. Proper cones and adapters should be used, free of nicks and burrs to ensure proper balancing.

### Wheels

#### Wheel (Lug) Nuts

Each wheel nut should be torqued in the appropriate torque sequence (refer to graphic) and to 190 N·m (140 lb ft). The torque should be re-checked after the first 160 km (100 mi). To help protect the wheels from theft, a wheel lock kit is also available.

Caution: Incorrect wheel nuts or improperly tightened wheel nuts can cause the wheel to become loose and even come off. This could lead to an accident. Be sure to use the correct wheel nuts.

#### Care / Cleaning

Use soap, hot water and a 100% cotton cloth to clean and polish the new wheels. If using a wheel cleaner, be sure to select one that will not harm the wheel surface, such as GM Chrome and Wire Wheel Cleaner, P/N 1052929 (in Canada, use 10953202). Avoid car washes that use carbide tipped brushes, as these may damage the wheel's finish. Periodically clean the backside of the wheel to remove road grime, brake dust and grease.

### Vehicle Modifications

#### Tire Label

Important: Vehicles originally equipped with 19" tires (RPO QCW or QUP) DO NOT need a new label.

After installing the recommended P255/60R19 tires, place the provided tire label on the vehicle. The new tire label should be located within the red box, over the top of the original tire label found on the door jamb. To locate the label within the red box use the upper left hand edge of the red line as a guide. When properly placed, the new tire label will obscure the original tire information. Be sure that the surface is clean and dry. The surface temperature should not be less than 21°C (65°F). The label is provided as a guide for tire inflation pressures and information relevant to occupant/cargo capacities.

#### Tire Pressure Monitor (TPM) System

To avoid system malfunctions, it is necessary to install tire pressure sensors in the accessory wheels. Replacement sensors can be obtained or sensors from the OE wheels can be transferred to the accessory wheels. After the wheels are installed on the vehicle, it is necessary to learn the new sensor identification codes/locations into the remote control door lock receiver (RCDLR).

#### TPM Sensor Relearn Procedure

1. Turn ON the ignition, with the engine OFF.
2. Apply the parking brake.
3. Using the DIC, press the vehicle information button until the RELEARN TIRE POSITIONS message displays. If your vehicle does not have the DIC buttons, press the trip odometer reset stem located on the instrument panel cluster until the RELEARN TIRE POSITIONS message displays. If your vehicle has the DIC buttons, press the set/reset button. The horn will sound twice to indicate the TPMs receiver is ready, and the TIRE LEARNING ACTIVE message will display. If your vehicle does not have the DIC buttons, press and hold the trip odometer reset stem until the horn chirps twice and the TIRE LEARNING ACTIVE message is displayed.

Alternate method: Simultaneously press the keyless entry transmitters lock and unlock buttons until a horn chirp sounds or use the Tech 2® to initiate the learn process. A horn chirp will sound indication the mode has been enabled.

4. Starting with the left front tire, hold the antenna of the J 46079 against the tire sidewall close to the wheel rim at the valve stem location then press and release the activate button and wait for a horn chirp, or increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before the 8-10 second pressure increase/decrease time period has been reached, or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached.
5. After the horn chirp has sounded, proceed as in step 4 for the next 3 sensors in the following order:

• | Right front

• | Right rear

• | Left rear

6. After the LR sensor has been learned, turn OFF the ignition to exit the learn mode.
7. After the learn mode has been exited, adjust all tire pressures to the recommended PSI.

#### Electronic Brake Control Module (EBCM) Reprogramming

EBCM reprogramming is only required on vehicles when upsizing from 18" tires/wheels to 19" tires/wheels. Contact Techline (1-800-828-6860 English or 1-800-503-3222 French) to obtain a VCI number. Record this number on the form below. Use the Service Programming System (SPS).

For proper vehicle operation and to ensure coverage under the provisions of the new vehicle warranty, the vehicle must be reprogrammed with the correct calibrations as soon as the accessory wheels are installed.

Important: Module reprogramming must be done using Pass-Thru method.

1. With the Tech 2® still connected, select the proper reprogramming method: "Pass-Thru" and "Reprogram ECU", then "Next.".
2. Build the vehicle.
3. Verify that the VIN is correct, then "Next."
4. Select the proper controller to be programmed: "EBCM Electronic Brake Control Module."
5. Select the proper programming mode: "VCI" , then "Next."
6. On the following screen, select the proper calibration "Electronic Brake."
7. Enter the VCI number obtained when calling TCSC, then "Next."
8. From the part numbers displayed, select the one containing the correct wheel size in its description, "Next."
9. On the following screen, select "Done."

#### Checking and Clearing DTCs After Reprogramming

DTCs codes may be set as a result of the programming process. In most cases the codes can be cleared using the Tech 2® and following the procedure listed below.

1. Install the Tech 2® to the vehicle.
2. Turn the ignition ON with engine OFF.
3. Enter "Diagnostics" and build vehicle according to model year, vehicle line, etc.
4. Select "Vehicle Control Systems."
5. Select correct engine.
6. Select "Vehicle DTC Information."
7. Select "DTC Display." Scan tool will check all modules for any DTCs that are set.
8. Select "View all DTCs."
9. Select "Clear DTCs."
10. Press the "exit" key to escape.

Important: If original equipment tires/wheels are reinstalled, it will be necessary to reset the programming of the PCM to the original specifications.

#### Front Stabilizer Shaft Replacement

Installing the larger (32 mm) diameter front stabilizer shaft is required only when upsizing from 18" tires/wheels to 19" tires/wheels on the Acadia and OUTLOOK AWD configurations. This will be installed for vehicle handling purposes. Replace the front stabilizer shaft with GM P/N 19166517, using the procedure listed below.

Notice: Secure the steering wheel utilizing a strap to prevent rotation. Locking of the steering column will prevent damage and a possible malfunction of the SIR system. The steering wheel must be secured in position before disconnecting the following components:

• | The steering column

• | The intermediate shaft

• | The steering gear

After disconnecting these components, do not turn (steer) the front tires/wheels/knuckles. Failure to follow these procedures may cause improper alignment of some components during installation and result in possible damage to the SIR coil.

1. Raise and support the vehicle.
2. Remove the front tires and wheels.
3. Reposition the intermediate shaft boot and remove the bolt (1) attaching the intermediate shaft to the steering gear.
4. Remove the nut (3) and disconnect the stabilizer shaft links at the stabilizer shaft.
5. Position adjustable jack stands underneath the left and right side at the rear of the front cradle.
6. Remove the nut (2) and the right underbody side rail front plastic extension.
7. Remove the left and right frame reinforcement mounting bolts. Left side shown, right side similar.
8. Loosen the rear frame mounting bolts (1).
9. Lower the frame (1) from the frame rail (2) until enough clearance is gained to remove the stabilizer shaft.
10. Remove both left and right stabilizer shaft insulators bracket bolts (1).
11. Remove the left and right brackets (2) and insulators (3) from the stabilizer shaft.
12. Remove the stabilizer shaft from the right side (passenger side) of the vehicle. Maneuver the stabilizer shaft so it clears the underbody components.
13. Position the new stabilizer shaft on the frame.
14. Install the left and right stabilizer shaft insulators and brackets.
15. Install both left and right stabilizer shaft insulators bracket bolts.

Tighten
Tighten the insulator bracket bolts to 50 N·m (37 lb ft).

16. Using the jack stands, raise the front cradle into position.
17. Tighten the rear frame mounting bolts (1).

Tighten
Tighten the frame to body bolts to 100 N·m (74 lb ft) plus 90 degrees.

18. Install the left and right frame reinforcement mounting bolts.

Tighten
Tighten the reinforcement bolts to 50 N·m (37 lb ft).

19. Remove the adjustable jack stands.
20. Install the right underbody side rail front plastic extension and nut.

Tighten
Tighten the nut to 11 N·m (97 lb in).

21. Install the intermediate shaft bolt.

Tighten
Tighten the intermediate shaft bolt to 22 N·m (16 lb ft).

22. Install the intermediate shaft boot into position.
23. Install the front tires and wheels.
24. Lower the vehicle.

### Warranty Information

#### Wheels

All GM Accessories sold and permanently installed on a GM vehicle PRIOR to new vehicle delivery will be covered under the provisions of the New Vehicle Limited Warranty.

For the U.S., in the event GM Accessories are installed AFTER new vehicle delivery, or are replaced under the new vehicle warranty, they will be covered (parts and labor) for the balance of the vehicle warranty, but in no event less than 12 months/12,000 miles. This coverage is only effective for GM Accessories permanently installed by a GM dealer or a GM approved ADI (Accessory Distributor / Installer).

For Canada, in the event GM Accessories are installed AFTER new vehicle delivery, they will be covered (parts and labor) for the balance of the vehicle warranty, or up to 12 months/unlimited kilometers depending on month installed. For replacement after the new vehicle warranty expires, but within the 12 months/unlimited kilometers coverage, refer to claim type "B" guidelines.

GM Accessories sold over-the-counter, or those not requiring installation, will continue to receive the standard GM Dealer Parts Warranty of 12 months from the date of purchase (parts only).

#### Tires

Any approved tire installed on a GM Vehicle PRIOR to delivery will be covered under the provisions of the New Vehicle Limited Warranty. Tires are covered against defects in material and workmanship. Tires are warranted for defects "without" prorated charge for tread mileage. Subsequent replacements under this warranty will continue to be covered for the remainder of the New Vehicle Limited Warranty.

Any approved tire installed on a GM Vehicle PRIOR to delivery may continue to be warranted on a prorated basis by the tire manufacturer once the New Vehicle Limited Warranty expires.

Any approved tire installed AFTER delivery will be covered under the provisions of the tire manufacturer warranty.

USA dealers should refer to GM Warranty Administration Bulletin 00-03-10-003I and GM Parts Process / Policy Bulletin IB03-001 for more information.

Canadian dealers should refer to GM Warranty Administration Bulletin 01-03-10-003C.

### GM/Saturn Warranty Claims Processing

Only GM dealerships/Saturn Retailers have the ability to file warranty claims for GM Parts and Accessories. Therefore, any warranty claims filed against such parts must be handled by the servicing GM dealership/Saturn Retailer. This includes those parts purchased from a GM-approved ADI (Accessory Distributor / Installer).

### ACCESSORY WHEEL AND TIRE INFORMATION FORM

You have just modified your vehicle by installing an "Accessory Package" which includes Wheels and Tires. This form contains important information about your accessory installation. In an effort to provide superior service to you, our customer, we ask that you please present this form to your Servicing Dealer when removing or installing wheels and tires on your vehicle. This form contains important information necessary to service your vehicle.

VIN: __________________________________________________________
Original Equipment: VCI #: ____________________________________ Tire & Wheel Size: _______________________________________________
Accessory Equipment: VCI #: _________________________________________ Tire & Wheel Size: _______________________________________________ Important: Please store this form in the vehicle with your Owner's Manual. A record of this form will also be kept on file at your Servicing Dealer.