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1995 Jeep GC Diagnostic Port Location??

12-25-2004, 11:24 AM
Can somebody please tell me where the diagnostic port is on my Jeep? GC Laredo with 4.0, 2wd. I have borrowed a Cornwell Tools Tech/Force diagnostic computer but can't find the dang port to plug it in! Tranny is still giving me problems. Please help! Chad

12-25-2004, 11:31 AM
the one for the engine is under the hood by the pcm but the trans one is in the car kind of behind the dash by the should be might be under the carpet but it should be on the driver side

12-25-2004, 05:51 PM
Dash panels are now half torn apart and still nothing! The only thing I can find around the ashtray is 2 small black plugs and coax cable for the integrated mobile phone that was removed when we bought it. I have a cord with plug for the "Chrysler" diagnostic port but nothing looks remotely like it. The owner of the Diag computer said his Chrysler car plug was around the ashtray area in the lower center dash area. Well, I guess I will go look again......Thanks! Chad

12-25-2004, 07:21 PM
OK first things first, is the diagnosis computer for OBDII or does it work on any chrysler vehicle. you have a 95, ODBII is for 96 and later vehicles.

12-26-2004, 04:58 AM
Like XJ said it is located in the center of the vechiles under dash blue 6 point connector for ABS, Body Module, Trans. and Air bag. The Diagnostic connector for the engine PCM is Under the hood Drivers side fender. Some Chryslers only had the blue diagnostic connector. Iam not sure about Jeeps but some vechiles in 95 were OBD11 usally the ones made in latter half of year. Should say under Hood. If OBD11 only have the one Diagnostic port under steering wheel.

12-26-2004, 10:48 PM
Thanks guys. After spending the afternoon studying the diagnostic computer and doing the tutorial I learned a few things. There is a 6 pin pigtail coming out of the PCM which I found a diag cable for. Ran the PCM diag and no codes (as expected). One connector under the ashtray is a 6 pin of which I found another cable (named Chrysler III) that would plug into that. The other connector is a 2 prong and both are BLACK. This Cornwell computer has no capabilities for the trans test but did offer a wealth of detailed written diagnostic problems and fixes - most importantly the transmission governor transducer problem. At this point I have just about determined changing the Governor pressure solenoid and transducer are my next steps unless somebody else has any ideas. Thanks! Chad

12-26-2004, 11:03 PM
the transducer is a pretty common item.what problems are you having?

12-29-2004, 04:53 PM
Hey XJ,

I Have another post in here on that subject but basically "no shift out of 1st gear until 38 mph". EXTREMELY repetitive situation. I'll keep you guys informed when fixed. Chad

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