Last post on Oct 13, 2013 at 7:47 AM
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
#396 of 421 Re: Silverado starting problems [seafarmer]
Nov 29, 2011 (6:12 pm)
I did check all the wires and connections. I tried a different mass air flow sensor that I knew was good and it still did the same thing. The air box and sensor are all good . It runs fine until it warms up,then acts up. I'm thinking it could be a leaking fuel pressure regulator
#397 of 421 gmc sierra fuel system
Dec 11, 2011 (7:32 pm)
I have a 2008 gmc sierra last 8 vin 8Z160870 4WD pickup was running when parked would not start in morning did some test was not getting fuel assumed fuel pump 115,000 miles,replaced fuel pump and still would not start. applied power to pump and pickup started removed power and truck died. have no power at 20amp pump fuse, key on or off, pump relay has power but jumping relay dosent work any ideas
#398 of 421 Re: 1988 gmc sierra 1500 fuel pump electronics [chuckh2]
Dec 14, 2011 (10:20 am)
Hey i have the same car and i checked and replaced the feul filter and fuel pump now im geting good pressure and good volume but the fuel injectors wont fire there are two fuel injectors. But evry now and then when i turn it over for a long long time and once and a blue moon it will start and when it deos start it runs fine then it will start up for the rest of the day then when u let it set for a few days its a pain in the ass to start again
#399 of 421 2006 GMC Sierra Denali Fuel Pump
Dec 26, 2011 (7:24 pm)
I am having problems with my fuel pump I think. My truck one day just would not start, it would just sit and crank but would not turn over. Me, my dad and my brother dropped the tank and replaced the pump. In the process my old man ripped one of the wire on the female 4 pin connector. So I got a new one but the color of the wires on the new plug are different from the stock connecter. I just put them on so the colors match. And my truck will still not start. I have looked at IGN 1 relay and it was backwards for some reason so i put it on right and all the fuses look good in my fuse box. Please help me.
#400 of 421 Re: Silverado starting problems [kcaratello]
Dec 31, 2011 (9:44 am)
I can't remember on if it is the same on the older ones, but on 99 and newer, it sounds like the fuel regulator. It is up on the fuel rail.
#401 of 421 Re: 2006 GMC Sierra Denali Fuel Pump [byron06denali]
Jan 02, 2012 (6:23 pm)
byron06, have you figured out your problem yet? I have a 03 1500 hd 4X4 and also changed out my pump after checking all the fuses and relays and only have 5 volts at pump, i also ran 12 volt lead to pump and the truck will start and run but only with the jumper. I seem to have 12 volts leaving the fuse box from relay and fuse but it is not getting to the pump, i also checked if the circuit ran to oil pressure swtich and i had 5 volts there as well, any ideas on where to check?
#402 of 421 Re: gmc sierra fuel system [cologuy]
Jan 02, 2012 (6:46 pm)
I may have the same problem as you have, i also installed a new pump and can only make it work with a 12 volt jumper, looks like i only have 5 volts at pump but i do have 12 volts leaving the fuse pump, did you come up with anything?
Thanks in advance
#403 of 421 Re: gmc sierra fuel system [cologuy]
Jan 02, 2012 (8:00 pm)
I may have the same problem as you have, i also installed a new pump and can only make it work with a 12 volt jumper, looks like i only have 5 volts at pump but i do have 12 volts leaving the fuse box, did you come up with anything?
Thanks in advance
#404 of 421 Re: 2006 GMC Sierra Denali Fuel Pump [03hd4by]
Jan 10, 2012 (1:11 pm)
I have the same issue, did u happen to find the problem? Thanks in advance.
#405 of 421 Re: gmc sierra fuel system [03hd4by]
Jan 10, 2012 (1:13 pm)
I have the same issue. Have you found the problem?