Question about 1994 GMC Sonoma
Truck dies after driving 5 to 7 miles in city, replaced fuel pump1 day ago,but still have the same problem
If a diesel then water in your fuel pump . if petrol change your fuel pump relay.
Posted on Dec 26, 2013
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Posted on Jan 02, 2017
I see that you had the injectors replaced 20,000 miles ago. I would still check the oil to make sure it is not overfull. The new injectors could be bad. If the oil level is not overfull then get a paper towel and touch the dip stick tip on the paper towel while oil is on the dip stick. If it's only oil it will not spread. If it has diesel in the oil the oil with spread. If this test doesn't show the injectors to be bad then you have three other possibilities. The FICM (fuel injection control module), the fuel pressure regulator, or the injection pump. It's hard to pinpoint what the problem is without running more tests and the only way to run those tests is with the computer the dealership has. Just so you know your injectors are still under warranty until 100,000 miles. Most likely you will have to take it to the dealership to get you truck fixed. I hope this helps you some.
Posted on Jan 05, 2009
Sound like it could be the purge valve, it is located between the cab and the box on the drivers side, it has a plug and a hose going to it. It has a small foam filter in it which must be removed, cleaned, dried and then reinstalled.
It happened to me.
I don't remember if I had to remove the neg. post off the battery for a minute or so to reset the fault code.
Posted on Mar 22, 2009
SOURCE: I have a 1998 K2500
Hate to say after the fact, just maybe non of the pumps were bad
I would only work on that issue when I had a complete vehicle wiring diagram to study,or at least all of the fuel system.
Relay,bad or loose grounds,almost anywhere that drops something effecting to fuel system,any modules if applicable.
Kind of a logic problem,with a twist of testing. Can't do anything without a window into your issues (The Wiring Diagram)
A loose wire on the ignition switch,pulled out of it's terminal. Any other things stop working. See why I want all the wiring schematics!
Posted on Sep 29, 2010
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