Circuit/System Testing
WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Inspect for the following conditions:
- Transmission line pressure low-Refer to Line Pressure Check . If the line pressure is low, refer to Oil Pressure High or Low .
- Transmission fluid flow through cooler and/or auxiliary cooler, if equipped, is restricted due to:
- Transmission fluid level low
- A clogged filter
- A leaking filter or seal-Refer to Automatic Transmission Fluid and Filter Replacement .
- A seized stator in the torque converter-Refer to Torque Converter Diagnosis .
- Air flow through transmission fluid cooler and/or auxiliary cooler, if equipped, is restricted due to:
- Damaged fins
- Debris
- Engine overheating due to:
- Low coolant level-Check coolant temperature, coolant level, and hoses.
- Restricted air flow
- Restricted coolant flow-Refer to Engine Overheating
- If any of the conditions listed are found, repair as necessary.