Diagnostic Aids

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Verify the driving habits of the customer, such as trailer towing, etc.
The scan tool transmission fluid temperature (TFT) should rise steadily during warm-up cycles then stabilize.
DTC P0218 may set approximately 600 seconds (10 minutes) after DTC P0711 has set. Follow the diagnostic table for DTC P0711 before proceeding to the diagnostic table for DTC P0218. Repair of the condition that set DTC P0711 will likely eliminate DTC P0218.