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Chevy Silverado and GMC Sierra Starting Problems

193 messages,  Last post on Nov 16, 2009 at 4:26 PM

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What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, Truck

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#76 of 193 Re: starting problem [lynn0335] by obyone Sep 03, 2008 (9:21 pm)
Replying to: lynn0335 (Sep 03, 2008 3:12 pm) P0118- The ECT (engine coolant temperature) sensor could have a bad connection; open ground or short between the sensor and the pcm; or a bad sensor. This could cause a no start condition; or start and run bad.   P0122- TPS sending signal too low voltage. Could be short to ground; not securely installed; or defective TPS. This normally would cause rough/low idle and/or stalling.   I think your best bet would be to check out the ECT first then the TPS since you have the codes and the ECT could cause a no start condition.   Hope this helps.
#77 of 193 Problem starting after sitting 2001 GMC Sierra 1500 by mcgregor45 Sep 03, 2008 (8:49 am)
Hey fellas, don't no if any of you can help but here's the problem. My 2001 GMC Sierra 1500 4.3 L has a hard time starting after it has been sitting for a day for two. The first few times I noticed it I thought the battery was dying. It would take 3 - 4 tries to get the engine to turn over.   I've checked the spark, its good. I just put a new battery on and I know its getting fuel.   When I think it's just about to catch I release the key and it sputters for a bit before quiting.   Any ideas?? Replies to this message: obyone (Sep 03, 2008 11:53 am) mcgregor45 (Sep 06, 2008 1:02 am) danamac (Sep 30, 2008 8:44 am) and 1 more...
#78 of 193 Re: Problem starting after sitting 2001 GMC Sierra 1500 [mcgregor45] by obyone Sep 03, 2008 (11:53 am)
Replying to: mcgregor45 (Sep 03, 2008 8:49 am) There is a check valve in the fuel line. If the valve fails, it allows gas to drain back to the tank. If that's the case it would be hard starting till the fuel pump can pressurize the gas in the line. Usually takes up to 10 seconds. A good way to test this is when starting leave the key in the "on" position for 10-15 seconds. If your truck starts right away, you know the check valve is the problem. Replies to this message: mcgregor45 (Sep 06, 2008 1:02 am) danamac (Sep 30, 2008 8:44 am) pbridges (Sep 30, 2008 3:32 pm)
#79 of 193 Re: Problem starting after sitting 2001 GMC Sierra 1500 [obyone] by mcgregor45 Sep 06, 2008 (1:02 am)
Replying to: obyone (Sep 03, 2008 11:53 am) changed the wires and plugs...starts like a dream now. thx Replies to this message: danamac (Sep 30, 2008 8:44 am) pbridges (Sep 30, 2008 3:32 pm)
#80 of 193 96' gmc sierra 1500 2wd by pbridges Sep 06, 2008 (1:24 pm)
I have a 96' gmc sierra 1500 2wd. Has been left at the curb for about a month. Started it, drove to a store, could'nt start it later to leave. Replaced the fuel filter, dist. cap and rotor, coil has spark, engine turns, but will not start, even when key left on for awhile, then cranking for about 15 seconds. any ideas? no probs. other than this one. thanks,
#81 of 193 Starting Problem Resolved by lynn0335 Sep 21, 2008 (4:28 am)
Thanks to all who posted to my problem. After chasing my tail for two weeks I installed a new fuel pump and filter. It starts right up. I don't understand why when the old pump showed 70psi when you first turned on the switch and would hole 50psi while running. Anyway, for any of you that may be having trouble like mind change the pump it doesn't cost that much. Thanks again. Lynn Davis
#82 of 193 2001 GMC 1500HD Wont Start!! by 2001hd Sep 26, 2008 (10:51 am)
I have a 2001 GMC 1500HD that every now and then i will go out and get in it and it wont start.. it will not even crank over like it is going to start... i can hear the full pump kick on and all cluster lights come on.. Has anyone ever heard of this? i have heard that it could possibly be the starter?? Im lost and it is very annoying... Can anyone help?? Thanks, Shaun Replies to this message: GCMIKE (Dec 23, 2008 6:21 am)
#83 of 193 Duramax Engine Starting Problem by brokedown123 Sep 25, 2008 (8:32 am)
I have a 2003 Chevy 3500 that only wants to start in the morning. When the engine is warms up it does not want to crank right away sometimes not at all. I have taken the truck to two different dealers and everything looks good on there computers. I'm not sure if it is electrical problem of fuel problem. I installed a new fuel filter thinking this could help but no luck. Can someone help me out?
#84 of 193 Problem with starting 2000 1500 Silverado by danamac Sep 30, 2008 (8:44 am)
Replying to: mcgregor45 (Sep 06, 2008 1:02 am) How do you access the intank fuel pump and do you have to drop the tank....I am having the same problem with the truck just dying on me...I changed the spark plugs, the fuel filter and the air filter and still no luck with it starting. I can hear the fuel pump running but my problems seem to be the same as everyone else so I again need to know it the fuel pump and screen are the answer....and how do I get to it....Obyone, do you have any ideas??? Does anybody have any ideas? I need my truck----and I need it now.... Replies to this message: pbridges (Sep 30, 2008 3:32 pm)
#85 of 193 Re: Problem with starting 2000 1500 Silverado [danamac] by pbridges Sep 30, 2008 (3:32 pm)
Replying to: danamac (Sep 30, 2008 8:44 am) had same prob on 96' gmc sierra, slid the bed back about 2ft after unbolting it(four on each side) and disconeccting two grounds, after that, piece of cake. make sure you replace wiring. usually what goes bad.

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