Test Description

WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

5

If conditions were not corrected, see appropriate BASIC DIAGNOSTIC PROCEDURES article.

6

If conditions were not corrected, a worn cam, worn intake or exhaust valves, or other engine mechanical failures may be at fault.