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I know that many vehicles (including Jeeps) have what is called either a Shift Lock Release or Shift Lever Override which allows the transmission to be moved to neutral for towing or other reasons. I have searched online extensively to find out if my 04 Grand Cherokee Overland has this feature...

Ok. I finally solved the problem. I tried checking exhaust back pressure at the upstream O2 sensor ports but consistently got around 1psi even at higher rpms. That ruled out the muffler and cat converters and breathing issues. Next I rented a fuel pressure test kit, plus since the Jeep has...

Regarding the valve or solenoid, would I expect to see a DTC (fault code) with that, or could it happen without a code?

The PCM flash/reprogram might work, although if its a programming issue, why hasn't it been doing it all along? Any idea how much the dealer might charge to do it?

235 65/R17. Sorry for the delayed reply. Apparently I don't have my account set up to send me an email if I have a response.

Im a brand new member. I have a 2004 Grand Cherokee Overland with a 4.7L V8 and a 545RFE transmission. It has about 98,000 miles on it. The transmission works fine around town with up and downshifting. On the freeway, with normal acceleration and deceleration, it also performs fine with no...