Manual First
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- With the vehicle stopped, move the gear selector to FIRST.
- Accelerate the vehicle to 32 km/h (20 mph).
- Verify the following:
- No upshifts occur
- The TCC does not apply
- There is no noticeable slip, noise, or vibration