Diagnostic Aids
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the transmission fluid lines to the radiator. The lines may be pinched, plugged or twisted.
- Contamination may cause the TCC apply valve to stick in the valve body.
- Internal damage to the torque converter may prevent TCC application.