And now I've heard of a PCM that needed a re-flash. Learn something new every day on here.
Though, that GMC might have been a reflash to replace a faulty factory tune with a newer one. Insofar as I know, this is not done with GPs.
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01-26-2013
And now I've heard of a PCM that needed a re-flash. Learn something new every day on here.
Though, that GMC might have been a reflash to replace a faulty factory tune with a newer one. Insofar as I know, this is not done with GPs.
Last edited by SlowNA06; 01-26-2013 at 12:29 PM.
01-26-2013
mine was a odd deal, the trucks prnd12 indicator would not shift back to park, stayed in drive.( shiftier was in park tho) and as we all know, cars wont start in gear. the dealer came and towed it off. lol
was told the pcm need to be re programmed. lost my truck for 2 days , but it was a free repair, and tow.
06-07-2013
I'm curious to see how this turns out; it seems we're having the same problem with the 2001 GP that we got-- Turns over, but doesn't start, although dad squirted in some fluid and it bucked right up. Good luck on finding the fix! Have you gotten the fuel pressure gauge yet?
06-07-2013
If it starts with starting fluid them you have no fuel. Likely a bad fuel pump
06-07-2013
Or the injector fuse is blown.
06-10-2013
I finally ended up taking my car to a GM dealer for a diagnosis. And they told me that one of my ignition coils shorted out which subsequently shorted my ignition control module and blew out my fuel injector fuse. He showed me the shorted coil and it had a huge split straight down the middle of it.
06-20-2013
Oof! Well, I hope it wasn't too terribly much to fix, if you have done so. What's goin' on with it now?
09-01-2013
Similar issue in my 08.... checked fuel pressure at the rails and its 55psi which is good.... Also check throttle body and its opening... tried spraying ignition fluid into the throttle body and it won't turn over either... next step for me is checking the ignition control module.... is this mounted right under the coil packs or is this located somewhere difficult to get to?
09-01-2013
its right underneath the coil packs
09-01-2013
Alright I'm just a bit frustrated... Fuel pressure good but no start with starter fluid to throttle body... Maf unplug didnt change anything.... no spark from multiple coils using inline spark tester.. One coil had a crack in it... Took icm to autozone for test... The module is not even showing as connected... Bought new coil and icm... Still no go... Father in law suggested possible alternator fail but I'm thinking crankshaft position sensor ... Anyone heard anything about alternator causing no start no spark ?
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09-01-2013
Alt, won't be the issue here.
Double check the ICM ground on the long stud under the coil pack bracket.
Then I'd look into the crank sensor.
09-02-2013
Ignition coil cracked... Shorted icm and crank sensor and blew fuel injector fuse.... Started up like a champ after a long weekend
My daughter enjoyed helping
Notice that Pontiac motorsports shirt?!? Oh yeahhh
09-03-2013
Actually I had a combination of problems and a blown injector fuse was one of them. It started with a coil burning out, that caused a surge in the ignition system that subsequently shorted out my ignition module and blew the injector fuse.Originally Posted by BillBoost37
09-03-2013
Actually I was able to fix all of it myself. I paid $100 bucks for the control module and $35 for the coil. And of course I had to pay the dealership a $75.00 diagnostic fee but that sure beat the heck out of their repair charge of $550.00 bucks!!!
09-03-2013
Good lord we nearly had the same exact problem. I was fortunately spared the crank sensor being fried. Those coils going bad can really cause some major problems. I'm thinking about going ahead and replacing the other 2 coils did you replace yours?
09-03-2013
Did you also check the fuel injector fuse?
09-03-2013
Did you check the injector fuse?
09-03-2013
Ya my inj fuse was blown as well ... No codes with anything which I know is pretty common with crank sensors ... Stole a fuse from wipers to double check she would start before I ran to pick up spares.... That was the best sound I heard all weekend!!!
~ : Andrea : ~
2008 GP @>~~\~~~
Aka Charlotte
09-04-2013
Did you go ahead and change out the other two coils?
09-09-2013
Just changed the one for now but I'm going to pulling another wknd of replacing worn parts n will do the same for those then
~ : Andrea : ~
2008 GP @>~~\~~~
Aka Charlotte
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