Question about 2005 Chevrolet Equinox
I drive about 35 minutes each way to work. I almost made it home and my car completely died. The engine light came on and the T/C indicator. The car would not restart. After 15 minutes, the indicator lights went off and I was able to drive it to the garage. The garage stated that U2105 loss of communication, CO241 PCM malfuntion and CO 236 TCS RP malufuntion codes that appeared were cleared from the computer. Since they were unable to duplicate the problem after clearing the computer they did not do any repairs. The vehicle was returned and it was stated that I need to have the vehicle checked when the problem is occuring to continue diagnosis or hard failure. I spent $120 for nothing.!! I am scared to drive the vehichle out of town. HELP!!
Could be anything from an ignition switch going bad to a loose or oxidized pin terminal somewhere. This is the kind of problem that drives owners and shops crazy. They are correct in telling you that they can't do anything unless they can identify the source of the problem. When I ran a shop I would credit a customer towards the final repair, when it was found. In the meantime, I would try doing a simple running "wiggle test" on all visible wiring, both in the engine bay and under the dash, especially at the bulkhead connectors at the firewall. If you can induce it to do the same thing again, don't fix it unless you see an obvious problem (sparking at a connector etc) call the shop and have them come & look or tow it back. This may work...I did it on one of my cars though and the problem could not be found (I must have moved a chafed wire away from where it was grounding) The problem did happen again...six years later!!! good luck
Posted on Mar 11, 2009
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Posted on Jan 02, 2017
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The engine and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant teperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL THE DIAGNOSIS & TESTING IS COMPLETED.
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