Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. 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.

2) - It is imperative that the vehicle be driven to attempt to reset the DTC. Using the scan tool to perform a function test may not produce the same result, and therefore may cause misdiagnosis of the vehicle.
7) - This step tests if the EBCM is capable of activating the ABS pump motor.
8) - A shorted ABS pump motor may damage the EBCM. It is imperative that the steps in the table be followed in order to prevent damage to a replacement EBCM.

Fig 1: DTC C0267 Or C0268 Diagnosis (Steps 1-4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0267 Or C0268 Diagnosis (Steps 5-10)

Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC C0267 Or C0268 Diagnosis (Steps 11-15)

Courtesy of GENERAL MOTORS CORP.