Vibe FWD L4-1.8L VIN 8 (2004)
Transmission Cooler: Service and Repair
MU5
Automatic Transmission Oil Cooler Flushing
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 inch) 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
Preparation
1. After the repair or replacement transmission is installed in the vehicle, do not reconnect the oil cooler pipes.
2. Important: The flushing fluid 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 GM, use of other non-approved fluids for cooler
flushing can have an adverse reaction to the seals inside the transmission.
Remove the fill cap (9) on the and fill the flusher tank (4) with 0.6 liter (20 - 21 oz.) of flushing solution using the measuring cup (6). Do not
overfill.
3. Install the fill cap (9) on the and pressurize the flusher tank (4) to 550 - 700 kPa (80 - 100 psi), using the shop air supply at the tank air valve (9).
