Diagnostic Aids
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The driver information center (DIC), if equipped, will display 'TRANSMISSION HOT- Idle Engine' when the TFT reaches 132°C (270°F). The TFT on the scan tool should rise steadily to a normal operating temperature, and then stabilize.
Ask the customer whether their typical day-to-day driving include:
- Trailer towing
- Hauling or vehicle over-loading
- Hot climate driving
- Extended idling
- Extreme off-road conditions
Trailer towing should occur in D4. Ensure the engine cooling system is functioning normally.