Transmission Fluid Check: Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.
This procedure checks the transmission fluid level, as well as the condition of the fluid itself.
NOTE:
Always use the proper automatic transmission fluid listed. Using incorrect automatic transmission fluid may damage the vehicle.
Before checking the fluid level, perform the following:
- Start the engine and park the vehicle on a level surface. Keep the engine running.
- Apply the parking brake and place the shift lever in PARK (P).
- Depress the brake pedal and move the shift lever through each gear range, pausing for about 3 seconds in each range. Then, move the shift lever back to PARK (P).
- Allow the engine to idle 500-800 rpm for at least 1 minute. Slowly release the brake pedal.
- Keep the engine running and observe the transmission fluid temperature (TFT) using the Driver Information Center (DIC) or a scan tool.
- Using the TFT reading, determine and perform the appropriate check procedure. If the TFT reading is not within the required temperature ranges, allow the vehicle to cool, or operate the vehicle until the appropriate TFT is reached.