Diagnostic Aids

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 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 TFT should rise steadily during warm-up cycles, then stabilize.
DTC P0218 may set after DTC P0711 has set. Follow the diagnostic table for DTC P0711 before proceeding to the diagnostic for DTC P0218.
Repairing the condition that set DTC P0711 will likely eliminate DTC P0218.