SMU - Revised Wheel Alignment Specifications
| Subject: | Revised Wheel Alignment Specifications |
| Models: | 2003 Chevrolet Silverado 1500 Series Regular and Extended Cab Models |
| 2003 GMC Sierra 1500 Series Regular and Extended Cab Models |
This bulletin is being issued to revise the Wheel Alignment Specifications in the Wheel Alignment sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
Because of a change in tire manufacturers, the caster specification differs for vehicles produced after the specified VIN breakpoints.
These specifications should be used for vehicles built prior to the VIN breakpoints shown below.
Model | Left Caster | Right Caster | Cross-Caster |
|---|---|---|---|
Silverado, Sierra (Reg. or Ext. Cab) | 3.50 ± 1.00 | 4.50 ± 1.00 | -1.00 ± 0.50 |
Vehicles built after the following VIN breakpoints are to be serviced with the new specifications shown in the table below
VIN Breakpoints and Dates
| • | Ft. Wayne: 1GCEK19T53Z200018 (11/14/02) |
| • | Oshawa: 2GCEK19TX31211735 (11/12/02) |
| • | Pontiac: 1GCEK19T63E187691 (11/14/02) |
Model | Left Caster | Right Caster | Cross-Caster |
|---|---|---|---|
Silverado, Sierra (Reg. or Ext. Cab) | 3.80 ± 1.00 | 4.10 ± 1.00 | -0.30 ± 0.50 |
