Jeep Grand Cherokee Transmission Fluid Leak – Common LeakFebruary 27, 2010 10:56 am Consumer, How To Auto Repair, Jeep
Common transmission leak on many Chrysler products is the electrical plug housing.
©DenLorsTools.com Summary: A common (Chrysler product) transmission fluid leak which affects many models including Jeep Grand Cherokees is covered here. The leak can easily be mis-diagnosed as a leaky pan gasket. A lot of unsuspecting consumers may end up spending a thousand dollars or more to rebuild a transmission with a leak like this. There’s no recall at this time from Chrysler, perhaps there should be, with such a widespread problem. The good news is that this auto repair blog describes the source of the problem and how to repair. A simple repair process to stop the leak for the cost of around ten dollars. Even a do-it yourself-er and can save possibly thousands of dollars from having a mis-diagnosed leak repaired by a transmission rebuild. The vehicle that the transmission leak occurred in, in this case was a 2007 Jeep Grand Cherokee Laredo 3.7L, GAS, Vin K, Eng Cfg V6.
The transmission fluid leak appears to be coming from the pan seal or gasket at the right front corner. However the common leak is from around the electrical connector housing for the wiring that goes into the transmission. The fluid leak can progress to a fairly rapid leak. This trans. is a Mercedes style transmission and has the European type of electrical plug. The plug is undone by twisting the plastic tab downward while slightly pulling outward. There is a 7 mm bolt in the center of the connector which can be accessed once the electrical plug has been removed. The updated part can be purchased from Chrysler for around $10, the part number is 68021352AA.
1. Start with a cold engine, since the service area is near the exhaust. Place a drip pan under the transmission to catch fluid. Disconnect the wiring harness connector by turning to the left or downward.
2. Remove the electrical housing by taking out the 7 mm bolt in the center of the connector secures it to the transmission. After the bolt is unscrewed, the plastic connector housing can be removed along with two o-rings. Use the updated part from Mopar/Chrysler part #68021352AA. Be sure to clean area where the o-rings will contact and that the old o-rings are removed.
3. Place the new replacement housing in position – it only goes on one way. The 7mm screw should be tightened with hand tools only and caution taken not to forcibly start it. After it is started it should NOT be over-tightened
4. Clean the fluid off from the work area with a part cleaner such as brake clean. Dry area with compressed air. Check transmission fluid level with vehicle running and top off if necessary.
The old electrical connector and o-rings.
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