Test Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. 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 tests the function of the 2-3 SS valve and the internal wiring harness.
- 5. This step tests the power to the 2-3 SS valve from the ignition through the fuse.
- 6. This step tests the ability of the PCM and the wiring to control the ground circuit.
- 8. This step measures the resistance of the automatic transmission (AT) wiring harness assembly and the 2-3 SS valve.