Diagnostic Aids

WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Inspect wiring for poor connections at PCM and at transmission in-line 20-way harness connector. Check for bent, backed out, deformed or damaged terminals. Check for weak terminal tension. Check for chafed wires that could short to bare metal or other wiring. Check for broken wires inside their insulation. If diagnosing for intermittent short or open conditions, move wiring harness while observing scan tool for value changes. Check engine and transmission wiring harnesses for an open condition.

DTC P0218 may set approximately 600 seconds after DTC P0713 has set. Follow the diagnostic procedure for DTC P0713 before proceeding to the diagnostic procedure for DTC P0218.

DTC P0713 defaults to an elevated line pressure condition which may result in TCC partial apply. This may induce idle surge and engine stall.