Circuit/System Verification
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Review the Freeze Frame/Failure Records when the DTC set. Verify the engine coolant temperature was less than 125°C (257°F).
- If greater than the specified range, refer to Engine Overheating .
- Inspect the transmission cooling system for restrictions or damage.
- Prior to cold start, ignition ON, observe the Trans. Fluid Temp. parameter with a scan tool. The Trans. Fluid Temp. parameter should be approximately the same as ambient temperature.
- Perform the Transmission Fluid Level and Condition Check to verify correct fluid level and condition.
- Perform the Transmission Fluid Cooler Flushing and Flow Test to verify proper transmission oil cooler flow.
- Perform the Line Pressure Check to verify proper transmission line pressure.
- Perform the Road Test while observing the Trans. Fluid Temp. parameter with a scan tool. The Trans. Fluid Temp. parameter should rise steadily to a normal operating temperature, and then stabilize.
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed on the Freeze Frame/Failure Records data.