Transmission Fluid Cooler Flushing and Flow Test (J-35944-A): Notes
Tools Required
- J 35944-A Transmission Oil Cooler Flusher. See Special Tools .
- J 35944-22 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 L (5 gallon)
- Eye protection
- Rubber gloves
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 repeat repair cases could have been prevented by following published procedures for transmission oil cooler flushing and flow checking. This procedure includes flow checking and flushing the auxiliary transmission oil cooler, if equipped.
The tool may be adapted for use on this vehicle by dealership personnel with a barbed hose connector and rubber hose obtained locally. This transmission has a transmission oil requirement which maybe slightly different than DEXRON® III ATF. However, flushing the cooler with DEXRON® III automatic transmission fluid is an acceptable service procedure. Very little fluid remains in the cooler after the flush procedure and the residual DEXRON® III ATF in the cooler is compatible with this vehicle's transmission fluid.
- Torque converter
- Oil pump
- Oil pump drive shaft
- Drive sprocket support
- Transaxle overhaul complete
- Transaxle assembly replacement
Cooler Flow Check and Flushing Steps
- Tools Required
- Preparation
- Back Flush
- Forward Flush
- Flow Check
- Clean-up