no start no headlights no power no instruments
#1
no start no headlights no power no instruments
07 equinox 3.4 electrical problem. after replacing head gaskets during test drive, car display said stabillatrack problem, then car stalls, try to restart, car starts and runs for a few seconds and stalls again. after a few trys to start nothing. no starter no dash info no driving lights no head lights. Do have park lights at rear but not in front. I am a former diesel tech am familiar with electrical problems,this problem seems to me to be ground . problem is i can not locate the grounds that serve power distribution panel. Thanks Joe
Last edited by hayseed13797; July 5th, 2018 at 6:04 AM.
#2
07 equinox 3.4 electrical problem. after replacing head gaskets during test drive, car display said stabillatrack problem, then car stalls, try to restart, car starts and runs for a few seconds and stalls again. after a few trys to start nothing. no starter no dash info no driving lights no head lights. Do have park lights at rear but not in front. I am a former diesel tech am familiar with electrical problems,this problem seems to me to be ground . problem is i can not locate the grounds that serve power distribution panel. Thanks Joe
#4
07 equinox 3.4 electrical problem. after replacing head gaskets during test drive, car display said stabillatrack problem, then car stalls, try to restart, car starts and runs for a few seconds and stalls again. after a few trys to start nothing. no starter no dash info no driving lights no head lights. Do have park lights at rear but not in front. I am a former diesel tech am familiar with electrical problems,this problem seems to me to be ground . problem is i can not locate the grounds that serve power distribution panel. Thanks Joe
That battery voltage sounds good, but it really doesn't mean much. The only accurate test for a battery is a load test.
#5
I am sorry i did not explain my self better. Did a load test on battery and it holds at 12.5 volts. Also when i did the head gaskets the alternator had noisy bearings so it was replaced with a new one.I did locate the grounds at the engine block and strut tower. I removed cables and cleaned the connections,also at battery negative post there is a ground that had broke, it was repaired. What i have found in checking for power at the fuse panel.relay #31 not clicking when ignition is turned on,and fuse #16 thru #29 have no power with ignition in run position I checked for a ground at relay 31 with ignition on, no ground to activate relay. I do have standing power and switched at relay 31.Ignition switch bad maybe? I also did try another pcm, no change. A local repair shop has a 07 equinox for spare parts, took all the relays and changed them. Also, I am very thankful for the reply's and trying to help me find the gremlin in this car.
#7
I had some time to look into this a bit deeper. The circuits you said have no power are linked to ground G111 in the diagrams I looked at. This ground is located under the right cylinder head (closest to the firewall) according to the picture I've attached.
2007-2009 LNJ engine harness grounds
2007-2009 LNJ engine harness grounds
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#8
Sorry I did not answer you sooner,been busy trying to get hay in barn. That ground is in a location that might have been broke by exhaust manifold when removing head,will check and let you know thanks again for your help.
#9
well I finally had chance to check the ground at back of engine,cleaned it and replaced. well i have power on all fuses that were dead,but anti theft locked me out wont start. Done some checking and found procedure for resetting. I got the car to start, runs ok but now I dont have any heaadlights driving lights or park lights. Again thanks for all your help. Any thoughts on new problem?