Question about 2005 Jeep Grand Cherokee

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2005 Grand Cherokee Laredo 3.7 Transmission problem

I have a 2005 Grand Cherokee with the 3.7L and the Mercedes transmission. Recently, it has intermittently started to remain in first gear after coming to a stop in normal driving. The transmission will not upshift, and the auto stick will not let me go down through the gears, just stays in the D display. If I shut the car off, then restart it, it usually clears the problem for a varying time period. It seems to be getting more frequent, and just this evening I had to limp home the last 4 miles by stopping at least 3 times to shut it off and restart it. Tonight for the first time, a check engine light came on, so I put my ODBII scanner on it and it read a P0700 PCM fault, which looked up as a Transmission Control Electronic Failure. I have no way to scan actual transmission codes. Does anyone have nay idea what is causing this problem, has anyone experienced it? Any idea on cause and/or repair cost?

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  • rapppaul Oct 09, 2008

    No slipping noticed at all either prior to this happening or once it started. It's just like you drive it fine, then come to a light or a stop, and when you try to pull out, it just stays in first gear. shutting the car off then starting it back up seems to temporarily clear the problem.

  • JONESTHER4EV Oct 24, 2008


  • Anonymous Nov 14, 2008

    I have the same problem on my jeep 3,7L Grand Cherokee Laredo 2005. The tcm (Tansmision control modul) was changed twice. Is it electric problem.

  • davebyer Dec 03, 2008

    Same Problem. P R D all get boxes around them instead of just drive. If I shift down it goes away. Very annoying.



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This started happening on my 05, 3.7L at around 45K miles. Usually once every two months, then I would shut off and back on and everything would be fine... Happened last week and I took to a private mechanic... Private mechanic said TCM needed to be flashed, and maybe replaced... Dealer said it would need to be replaced (of course)...I just got back from Dealer and it was covered under Powertrain warranty (only to 70K), but still cost $500 to replace the circuit board under the shifter... I dont think it shouldve cost that much, but I followed their advice so it hopefully wont happen again... Third jeep, each successsive one (each newer than the last) has more and more problems... Its sad that this will be my last jeep product...

Posted on Mar 27, 2009

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Wow. This is exactly what I drive and exactly what just happened. Except my wife was trying to get on the highway with our 6 month old baby. She called me and explained your situation to a tee. I told her to turn it off as it may reset the computer. We just turned 30,000 on our 2005 3.7. No problems til now. Hopeful this isnt a trend of things to come. I doubt the solenoids are failing. I am thinking it is something to do with a bad sensor.

Posted on Oct 25, 2008

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It sounds like the solenoids in your transmission are failing. Usally scanners are not very specific on transmission problems it is just an alert to get the transmission serviced. Has the transmission been slipping?

Posted on Oct 09, 2008

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What brand of code retreval device are you using for your obd II transmission code?

Posted on Mar 30, 2009

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Transmission Control System Malfunction.It means you have a trans control problem in the trans computer.
You will need to get it on a trans capable scanner to see what the trans code or problem is. You should get it to either the dealer or a good transmission shop to the the trans capable scanner done to see the exact problem

Posted on Feb 08, 2009

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If engine sounds okay, (when you accelerate, it revs up, etc.) then could be a transmission problem. (assume this is an automatic?)

Check fluid level first, if okay, next suggestion would be to change fluid & filter.

When you select a gear, do you get anything, any slight jolt to the vehicle?

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