Oil Cooler Flushing: Notes
CAUTION:
Flushing Solution (J-35944-22) is environmentally safe, yet powerful enough to cut through transmission fluid to dislodge any contaminants from the cooler. The safety precautions on the label regarding potential skin and eye irritations associated with prolonged exposure are typical precautions that apply to many similar cleaning solutions. It should be noted that according to General Motors, use of other non-approved fluids for cooler flushing can have an adverse reaction to the seals inside the transaxle.
CAUTION:
Do not use solutions that contain alcohol or glycol. Use of solutions that contain alcohol or glycol may damage flushing equipment, oil cooler components and/or transaxle components.
NOTE:
GM studies indicate that plugged or restricted transaxle oil coolers and pipes cause insufficient transaxle lubrication and elevated operating temperatures which can lead to premature transaxle wear-out. Many cases could have been prevented by following published procedures for transaxle oil cooler flushing and flow checking. This procedure includes flushing and flow checking the auxiliary transaxle oil cooler, if equipped. GM requires that transaxle oil cooler flushing and flow checking be performed whenever a transaxle is removed from the vehicle for service within warranty, including: Goodwin, SWAT, major overhaul, torque converter replacement and oil pump replacement.