Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sonoma, 2002 GMC Safari, 2002 GMC Jimmy, 2002 Chevrolet S10 Pickup, and 2002 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

The knock sensor must be torqued correctly to 18 ft. lbs. (25 N.m).
The mounting between the sensor and the engine must be free of burrs, casting flash, and foreign material.
The knock sensor head must be clear of the hoses, the brackets, and the engine electrical wiring.