new lq9 in: wont start. wont turn over
09-30-2005, 08:53 AM
#21
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Originally Posted by zippy
i'm a bit lost on the aluminum head thing though. the heads should be a decent ground???
If you hook your ground wire to a valve cover bolt, like the old days, you won't get a ground. The covers, and the bolts are insulated because of the coils being mounted there. That might have been what he meant.
09-30-2005, 09:52 AM
#22
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I think either a grounding problem or BCM (Body Control Module) problem is your culpret.
If the BCM goes, you will have to have it replaced ($280-$300) and have the BCM reprogrammed by GM service department or someone that has the propper software to do this.
The vehicle will not start, remote key pad will not work, and fog lights will not shine with a bad BCM. Though I'm not sure if it will cause it not to turn the engine over.
Hope you figure it out.
Good luck!
Jim
If the BCM goes, you will have to have it replaced ($280-$300) and have the BCM reprogrammed by GM service department or someone that has the propper software to do this.
The vehicle will not start, remote key pad will not work, and fog lights will not shine with a bad BCM. Though I'm not sure if it will cause it not to turn the engine over.
Hope you figure it out.
Good luck!
Jim
09-30-2005, 10:10 AM
#23
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Originally Posted by wkdivr
If you hook your ground wire to a valve cover bolt, like the old days, you won't get a ground. The covers, and the bolts are insulated because of the coils being mounted there. That might have been what he meant.
No, I used the bolt hole next to the coolant sensor toward teh front of the motor. didnt work. Went directly to the block , and it worked fine
09-30-2005, 02:06 PM
#24
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Originally Posted by white1
No, I used the bolt hole next to the coolant sensor toward teh front of the motor. didnt work. Went directly to the block , and it worked fine
Some times the heads work as a ground and sometimes they dont
its very strange.
10-01-2005, 07:10 PM
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