Automatic Transmission Oil Cooler Flushing: Notes

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

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 AC Delco T-IV GM automatic transmission fluid (Part No. 88900925) should be used when doing warranty repair on Vibe automatic transmissions.

Tools Required

Transmission Oil Cooler and Line Flusher
Transmission Oil Cooler Flushing Fluid
Measuring cup
Funnel
Water supply, hot water recommended
Water hose, at least 16 mm (5/8 in) ID
Shop air supply with water/oil filters, regulator and pressure gage
Air chuck with clip, if available
Oil drain container
Pail with lid, 19 liter (5 gallon)
Eye protection
Rubber gloves