Diagnostic Aids
WARNING: This page is about a different car, the 2009 GMC Yukon and 2009 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
The TCC fluid hydraulically applies the TCC, possibly causing an engine stall, under the following conditions:
- The TCC is hydraulically stuck ON.
- The parking brake is applied.
- Any gear range is selected.
- Contamination may cause the TCC apply valve to intermittently stick in the valve body.
- Internal damage in the torque converter may cause no TCC apply.
- Fluid contamination
- Plugged fluid circuits
- Restricted fluid circuits
- Verify that the transmission meets the specifications in the Shift Speed table.
- Refer to Shift Solenoid Valve State and Gear Ratio .