Diagnostic Aids

WARNING: This page is about a different car, the 2002 GMC Sonoma and 2002 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

If the complaint was Engine Cranks But Will Not Run, you may set a DTC P0336 when attempting to Start engine more than 15 times and the ignition is not turned OFF between attempts.
An intermittent problem may be caused by a rubbed-through wire insulation, poor electrical connections or broken wire inside the insulation.
Thoroughly check any suspected circuitry for backed-out terminals, improper mating, broken locks, improperly formed terminals, damaged terminals or poor terminal-to-wire connections. Check physical damage to the wiring harness.
An intermittent can also be the result of a defective reluctor wheel. Remove the CKP sensor and inspect the reluctor wheel through the hole.