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Pickups Chevrolet Silverado & GMC Sierra GMC Sierra: Problems & Solutions 
1492 messages, Last post on Oct 12, 2006 at 5:32 AM
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| Well put Mikec8! | |
 while driving the engine light will come on, the message across the "dummy center" reads, engine power low. There is no acceleration, hardly no brakes, and the engine revs up to 15-1600 rpms and stays there, no rough idle, no low volts. Funny thing is you can shut the truck off for about 10-15 minutes, restart and it runs fine, talk about felt like a fool after a 75 dollar tow bill and a mechanic looking at me funny and saying there are no codes for anything. Mechanics suggestion was to clean the throttle body which I myself did, it ran fine until today. anyone had the same problem? |
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I was driving two days ago and truck just died right in its tracts. It would turn over but wouldn't start. I immediately assumed Fuel Pump. I checked the pump and its running. I replaced the fuel filter and thought that would fix it but it didn't. Still just turns over and no start. Next I changed the coil out and no change. I looked at the rotor and the distributor cap and they look fine. I have pulled two spark plugs and neither one show that they are getting any fire. I am really stumped here as to what to look at next. Any suggestions? Thanks
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Replying to: bear11 (Dec 26, 2005 9:24 pm) You have no spark correct since you changed the coil (in cap or seperate) also........... Heres my bet.......... Inside the dist. there will be a "ignition module" It is sorta square flat plastic piece with bent ends and 4? plugs on it. They have a habit of failing. Cost about $20 bucks. If they go you will have NO spark also. Have a look inside your dist. Or call your local parts store to see if your year has one.......... |
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My Girlfriend has a GMC Sierra(Around 90-93 I'd say) and about 2-3 weeks ago she noticed the thermostat gague was going up, so she popped the hood and I noticed there was no coolant in the reserve tank, so we took it to a gas station and grabbed some basic coolant and put it in, but about a week ago she was driving and said it started smoking, so I took a look at it and it appeared that there was no oil in it, so I added 2 quarts and we took off back twards her house, but it started overheating again, and was smoking from a central location in the tubing located about center of the engine. One thing of note is that if you turn the heat on high, you don't get a blast of hot air like you do on traditionally hot engines. I was just wondering if this had happened to anyone else or if someone had experienced this problem, sorry for being vague, and thank you for helping if you can
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Replying to: adammc (Dec 27, 2005 3:46 pm) |
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I have a 2000 GMC Sierra on which the cruise stopped working. When I turn it on (truck is stopped), I hear a click like it is on. When I get to speed (60 mph), hit the button in the turn signal, nothing happens. I have tested continuity from the steering column to the connector at the cruise module and all switches/buttons work. Before I go out and spend $400 on a new module, is there some thing else that I can try or do to check? Is there a separate servo to change? In the repair manual, it looks like the servo and module are all in one. Thanks Bren |
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| 2001 4.8 hard to start when engine is cold have to put your foot on the foot petal for 1 to 2 minutes and then the engine will run fine then it will restart and run fine | |
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this is a gmc 4x4 2500 with a 5.7 liter I have had this truck for about 4 yrs and it has had this problem about 9 times (turns over great but will not fire) usually after about 3hrs to 3 days it will start and run great. I can't find out what is causing this problem. I have been lucky in that it never quits while running just after sitting a while. I have done these tests replaced the icm module,put a pressure gage on the fuel line and I get 60 psi with key on,I have spark at all the plugs, Have sprayed starting fluid in the throttle body while trying to start it. Thanks for any input Dan |
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