Test Description

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

4. This step simulates an open MPA switch.
5. This step simulates a closed MPA switch.
6. This step tests the MPA switch by closing the switch manually.
7. This step tests the MPA switch by ensuring the switch plunger is in the open position.

Fig 1: DTC C0282, C0285, Or C0286 (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0282, C0285, Or C0286 (2 Of 2)

Courtesy of GENERAL MOTORS CORP.