Car won't crank
Thread Starter
7th Gear
Joined: Jul 2015
Posts: 7
Likes: 0
Car won't crank
I recently did a cam swap and heads and intake on my 2005 auto c6 the car had been sitting for about 3 months and after all the upgrades were done the car won't attempt to crank. I also did turn the crank after the upgrades to make sure it wasn't stuck. The codes u2105 and u2108 are showing and they are for lost communication to ecm and bcm I've looked for lose wires and grounds and no luck I tried changing the fuses and still no luck. Currently when I hit the button the fuse box makes a click and nothing else happens the starter doesn't engage. I've also checked to make sure the starter is okay and it is as is the battery. Any thoughts or solutions?
Last edited by SilverC6ls; Oct 30, 2015 at 05:30 PM.
Drifting
Joined: Jun 2006
Posts: 1,295
Likes: 18
From: Chicago Illinois
St. Jude Donor '12
Have you removed and reinstalled the big blue connector in the passenger footwell? How about the other (black?) connector just above it? It may be a long shot, but I would try that.
A short anywhere can disturb communications with the ecu and bcm. That would be a worst case scenario. Could you have pinched the wiring harness going to the cam position sensor on the front of the motor?
A short anywhere can disturb communications with the ecu and bcm. That would be a worst case scenario. Could you have pinched the wiring harness going to the cam position sensor on the front of the motor?
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
What happens after the click? Do gauges and lights go off or does nothing change?
If you wait 10 seconds or so do the gauges do the sweeping thing on their own again?
If you wait 10 seconds or so do the gauges do the sweeping thing on their own again?
Thread Starter
7th Gear
Joined: Jul 2015
Posts: 7
Likes: 0
Have you removed and reinstalled the big blue connector in the passenger footwell? How about the other (black?) connector just above it? It may be a long shot, but I would try that.
A short anywhere can disturb communications with the ecu and bcm. That would be a worst case scenario. Could you have pinched the wiring harness going to the cam position sensor on the front of the motor?
A short anywhere can disturb communications with the ecu and bcm. That would be a worst case scenario. Could you have pinched the wiring harness going to the cam position sensor on the front of the motor?
Thread Starter
7th Gear
Joined: Jul 2015
Posts: 7
Likes: 0
There's only one click and its in the fuse box and then after about 10 seconds all the gages come on and I have service engine soon, service abs, service fuel system and service vehicle soon errors
Thread Starter
7th Gear
Joined: Jul 2015
Posts: 7
Likes: 0
The car was perfectly fine and was tuned before the mods for spray and then during all this heads cam swap sat for about 3 months and after I was finally finished and tried to start it nothing happened and that's where I am now.
Advanced
Joined: Jul 2003
Posts: 58
Likes: 1
From: Worcester MA
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