Solenoid Pack Replacement 99-04 Jeep Grand Cherokee 45RFE P1781 Fix P0700
My 1999 JGC started going into limp mode last winter with a P0700 code. Auto Zone helped me pull the P1781 code from the computer and after all my research this was my solution. If I shut my car off after a few miles and restarted it would work fine. I researched a ton, thinking it could be the TCM, the battery terminals, or the speed sensors. Turned out to be a bad solenoid pack in the transmission. Here are all the links and info I found in my extensive research. Turns out this wasn't all that uncommon a problem. But I couldn't find a video! It's been 6 months since my DIY fix and no problems! Shop wanted $700 plus the price of the part. I spent $200 on a refurbished solenoid pack and another $50 for the filters and trans fluid. Took half of a Saturday and saved me hundreds, and I'm no mechanic. Here's a copy and paste of all my research & links. Good luck! Transmission Manuals: https://dl.dropboxusercontent.com/u/7... https://dl.dropboxusercontent.com/u/7... *pages 452-463 on this document helped the most!* Code P0700 *Transmission control system malfunction indicator lamp request Solenoid pack Part #68002342AD sold at Brent Brown Older part numbers: 4799934AB 934AC 934AD P1781-OD PRESSURE SWITCH SENSE CIRCUIT One of the Pressure Switches in transmission is closed at the wrong time in a given gear. POSSIBLE CAUSES: TRANSMISSION RELAY DTCS PRESENT INTERMITTENT WIRING AND CONNECTORS TRANSMISSION RELAY OUTPUT CIRCUIT OPEN O/D PRESSURE SWITCH SENSE CIRCUIT OPEN O/D PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND O/D PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE O/D PRESSURE SWITCH INOPERATIVE TCM - O/D PRESSURE SWITCH CHANGING OUT SOLENOID PACK http://www.jeepsunlimited.com/forums/... REPLACING TRANS FLUID Need: cooler return filter (optional but recommended) Filter Gasket and/or RTF ATF+4 trans fluid (5 quarts) Undo 10 bolts. coat with RTV silicone to make a gasket don't add fluid to a cold trans (except for initial add?) http://voices.yahoo.com/how-change-tr... http://www.jeepforum.com/forum/f197/g... http://www.jeepforum.com/forum/f13/45... 45RFE TRANS INFO http://www.atraonline.com/gears/2001/...

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