On-Vehicle Testing: Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1998 GMC Savana Special, 1998 GMC Savana Camper Special, 1998 GMC Savana, 1998 Chevrolet RV Cutaway, and 1998 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Vehicles are equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in the AIR BAG RESTRAINT SYSTEM
article.
NOTE:
The following tests assume that engine and battery are operating normally and are at operating temperatures, battery is charged, there are no engine problems that would cause a no-start condition, and no diagnostic trouble codes are present.