Diagnostic Aids

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

Verify the customer's driving habits, such as trailer towing.
Transmission fluid temperature 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 procedure for DTC DTC P0711: TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT - RANGE/PERFORMANCE before proceeding to the diagnostic procedure for DTC P0218. Repairing the condition that set DTC P0711 will likely eliminate DTC P0218.