GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello, could you give me the 8th VIN character?
Thanks, ***** ***** transfer the old PROM over to the new computer? Also have you ran through a check like the one below?
Sounds good, I'll be stepping out for about an hour or so but will reply ASAP
I'm going to opt out so you can get a second opinion, but in the past I have actually seen the prom itself be bad and cause this, hence my asking. GM issued a TSB about it back during that era.
Someone should be with you shortly to offer a second opinion.
Hi, My name is ***** ***** for the delay.
I will do my best to assist you
tell me,,will it fire with a prime?with starting fluid or a little fuel into the throttle body?
ok,,if it is firing with starting fluid,you arent getting fuel into the cylinders,
the first thing you need to do is to check the fuel pressure, these must have no less than 60psi at all times .anything less than 55psi wont go through the poppet injectors.
if the fuel pressure is good,then the problem may be that you have no fuel injector pulse,this can be caused by a bad ignition module or a bad crank sensor
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the other thing that may cause this is the pick-up coil in the distributer,
you may just want to replace the distributor with a new rebuilt unit sense it will need to be removed and took apart to replace the pick-up