Test Description

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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.

3. This step tests for a short to ground in the 4WD low signal circuit (CKT 1694).
4. This step tests for an open in the 4WD low signal circuit (CKT 1694) or a faulty TCCM.

Fig 1: DTC P1875 - 4.3L (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P1875 - 4.3L (2 Of 2)

Courtesy of GENERAL MOTORS CORP.