Last post on Jun 12, 2013 at 7:13 PM
You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck
#376 of 419 Re: 2007 GMC Sierra Fuel Problem? [debc1998]
Apr 24, 2011 (4:31 pm)
I am having the same problem with my 2003 silverado 2500HD. I have put 3 fuel pumps, new filter, and pressure regulator in and once it warms up it justs dies and won't start. I need an answer so if you get one please advise us all. I am leaning toward crank position sensor??
#377 of 419 Re: 2007 GMC Sierra Fuel Problem? [masterchevy1]
Apr 24, 2011 (4:52 pm)
We finally got some codes to come out after having a mobile mechanic with a fancier machine to come out for $75.00. He said it had several codes which it spit out, first being to replace the accelerator pedal position sensor. $63.00 not working still. He claims the Crank position sensor is the next one to put it, we will get it tomorrow and see if that works. It sounds like this may be the problem. If it doesn't work then he will come back out and put the machine on again to see what it shows. I am frustrated at this point. I will let you know how it turns out tomorrow evening.
#379 of 419 Re: 2007 GMC Sierra Fuel Problem? [masterchevy1]
Apr 24, 2011 (4:59 pm)
He also said it good be a cam shaft sensor. He talked about both of them. Claims it could be either one. We are going with the Crank position sensor first.
Chevrolet: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
GMC: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
The Throttle Actuator Control (TAC) / throttle body type trouble codes, may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit.
#380 of 419 Re: 2007 GMC Sierra Fuel Problem? [masterchevy1]
Apr 25, 2011 (11:50 am)
by all means remove the pump assembly and test it with power from the battery using two pieces of wire touching the poles but only for a second ...then you will know if you have a pump problem or a wiring problem
saved me buying a third pump but cost me my right arm for the mechanic to diagnose and replace the wire
#381 of 419 Re: 2007 GMC Sierra Fuel Problem? [debc1998]
Apr 25, 2011 (5:06 pm)
I think I got mine fixed tonight. I found a post that said his was a loose ground wire behind the front driver wheel. Well that was correct. The fuel pump ground is connected to the frame at the body mount. I was in an accident 6 months ago and was hit in the driver door and tube step. The tube step was pushing on the back of the ground screw and stripped the threads in the frame. I tightened the ground screw and truck runs fine. This is why it would run fine sitting in the driveway but would die while driving (vibrations from Colorado roads). Just wish I wouldn't have spent $400.00 on pump, filter, and regulator chasing the problem.
#382 of 419 Re: 2007 GMC Sierra Fuel Problem? [ebonysilverado]
Apr 25, 2011 (5:08 pm)
thanks to all that posted but a special thanks to the post about the ground wire. STUPID GENERAL MOTORS for a stupid ground location!!!!
#383 of 419 Re: 1999 CHEVY TAHOE FUEL PUMP ISSUES [mickeymouse2]
Jul 16, 2011 (12:37 pm)
Hello. Im having the same issue with my 99 Sierra 5.3 99000 miles. I just had major work done. New headgaskets, heads, intake gasket, etc. Two weeks later I'm having fuel problems. Replaced fuel pump in 08. How do you check if power is going to the pump? Where are the grey and black wires found? Thanks.
#384 of 419 1999 Chevrolet Silverado 1500 4.8
Aug 02, 2011 (7:34 am)
I think my problem has to do with my fuel system...On a cold engine it studders or completely lags when accelerating in 1st then kicks into 2nd pretty hard. I just replaced my transmission about 2 months ago. Any ideas? Thanks
#385 of 419 Re: 1999 CHEVY TAHOE FUEL PUMP ISSUES [jeffgood1]
Aug 02, 2011 (10:13 am)
Wish I could help but I am also looking for answers.