GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi, my name is ***** ***** motor do you have in this?
ok, and it only starts hard when its warmed up, and also only surges when its warm?
These are common symptoms for a weak fuel pump, and we see this alot, did the mechanic check the fuel pressure when its warm?
and what was the fuel pressure when it was dying out?
it needs to be above 60 psi, if it drops any lower, this will happen, I need to know what th exact pressure was, can you call him?
we see this alot, it is most likely a weak fuel pump, how many miles do you have on this?
does the check engine light ever come on when driving?
ok, first off, does the check engine come on, when you first turn the key to run, and then go out after running for 2 seconds?
Yes, I am still here, does the check engine light come on for 2 seconds when starting, and go out?