No Crank, No Start, 1-Code U0100
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Joined: Jul 2017
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No Crank, No Start, 1-Code U0100
I have been having a No Crank, No Start issue for the last month. The only code I have is a U0100 Lost Comm With ECM PCM A.
The only thing that I did and it was about the same time since I have been having this problem was installing a new Pioneer avic-8200 radio with backup camera. I connected the radio with the factory wiring harness which uses the rdo 15 amp fuse in the BCM. The radio and backup camera worked fine.
Yesterday I got the bright idea to remove this fuse to see if the radio install in effect has caused my problem and wallah, The car has been starting flawlessly and the code has disappeared.
I figured I would throw this out on the forum for knowledge and review.
Now I need to figure out how a aftermarket radio install caused these issues.
The only thing that I did and it was about the same time since I have been having this problem was installing a new Pioneer avic-8200 radio with backup camera. I connected the radio with the factory wiring harness which uses the rdo 15 amp fuse in the BCM. The radio and backup camera worked fine.
Yesterday I got the bright idea to remove this fuse to see if the radio install in effect has caused my problem and wallah, The car has been starting flawlessly and the code has disappeared.
I figured I would throw this out on the forum for knowledge and review.
Now I need to figure out how a aftermarket radio install caused these issues.
Thread Starter
Navigator
Joined: Jul 2017
Posts: 9
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Again apologies for not replying back.
Burning Brakes
Joined: Jan 2017
Posts: 1,122
Likes: 199
From: TX
U0100 this code more than likely means that whatever code scanner was being used isn't communicated with the ECU correctly.
IIRC GM and Ford have special software that some scanners can't read. You may want to take it to Autozone or a GM dealer to read the code properly.
IIRC GM and Ford have special software that some scanners can't read. You may want to take it to Autozone or a GM dealer to read the code properly.
