July 4th went to a friends house and truck would not start. Unknown driver, locks do not work, remotes do not work, windows will not work. Cranks starts and shuts off. A battery disconnect brought everything back to life and off I went. As I was going down the rough driveway dash lights were on and off, the chime would activate ABS and brake light would come on and go off again. Finally all the gauges quit, locks and windows stopped working again, no dome lights, no 4x4 activator, no gear selector, no reverse lights. I do have speedometer, tachometer and the odometer works. I have the airbag, ABS, and battery light on in the dash but the alternator is charging fine. The rear HVAC is not working and the front works but will not kick in the A/C. Sunroof works. Of course I have no radio but I can operate the seats. The display on startup is unknown driver but it starts and drives fine. Auto headlamps turn signals and brake lights all operate.
A mechanic had me do some tests and said it sounds like the PCM fried. Freshly programmed PCM installed and all the same issues but will not run either. The pass-lock reset procedure could not be done because the lock symbol only stayed on for a couple seconds verses the ten minutes it is supposed to stay on. So, old PCM back in, it runs but no A/C with windows that will not work is not good.
With all the computers in the vehicle it acts like BCM is bad but with the no A/C or gauges that sounds like the PCM. So I am at a loss, this all seems to be due to an extremely rough driveway so could something have shaken loose verses a computer problem. Or did something short wiping out a few different computers/modules. All fuses test good. The week before I had suspension work done which required a lot of air hammering on the torsion rods, lots of vibrations.
have the same problem?
Friday, July 13th, 2018 AT 7:56 PM