Transmission Fluid Cooler Flushing and Flow Test: Notes
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
The J 45096
- Automatic Transmission Oil Cooler Flush and Flow Test Tool can be used to flush the transmission oil cooler system on an Allison equipped vehicle, but the flow meter should not be utilized.
GM studies indicate that plugged or restricted transmission oil coolers and pipes cause insufficient transmission lubrication and elevated operating temperatures which can lead to premature transmission wear-out. Many cases could have been prevented by following published procedures for transmission oil cooler flushing and flow checking. This procedure includes flushing and flow checking the auxiliary transmission oil cooler, if equipped. GM requires that transmission oil cooler flushing and flow checking be performed whenever a transmission is removed from the vehicle for service within warranty, including:
- Goodwrench SRTA
- Major overhaul
- Torque converter replacement
- Oil pump replacement
Only GM Goodwrench DEXRON® VI automatic transmission fluid should be used when doing warranty repair on GM transmissions.