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Chevy Silverado and GMC Sierra Electrical and Computer Questions

768 messages,  Last post on May 07, 2013 at 9:49 PM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck

    
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Messages Page 42 of 78

#402 of 768 01 silverado 1500 5.3 multiple cylinders misfiring while idling in drive by jlp09

Mar 21, 2010 (5:06 am)

My 2001 Chevy Silverado 1500, 5.3 vortec, is misfiring on multiple cylinders while idling in drive. When I stop at a red light, some times, the misfiring is so bad that it noticeably shakes the whole truck like I'm in the middle of an earthquake. The hotter the engine temp, the worse it is. I bought a Diablo Sport Predator programmer/tuner/diagnostic tool to help find out what the problem is. The Predator has the capability of live data feed,a.k.a.- real time data. I plugged the Predator in and it says that everything runs good while driving, but when I come to a stop, idling in drive, like at a red light or stop sign, the Predator says my engine is misfiring on multiple cylinders, but as soon as I get rolling again, its fine. Also, when I give it gas to get rolling from a stop, it does the weird jumping/ hesitating/ stalling thing( I honestly don't know what to call it), but just for a second. The Check Engine light doesn't come on and the Predator shows NO trouble codes. I've replaced spark plugs and wires, throttle position sensor(TPS), BOTH knock sensors, cam sensor,and today I am going to put in a new fuel filter. Assuming the fuel filter isn't going to help, what is the problem? Please, someone help!!!

#403 of 768 Re: 01 silverado 1500 5.3 multiple cylinders misfiring while idling in drive [jlp09] by obyone

Mar 21, 2010 (12:37 pm)

Replying to: jlp09 (Mar 21, 2010 5:06 am)
When was the last time you cleaned/replaced your IAC (idle air controller)? Manufacturers recommend replacing as the chemical (throttle body cleaner) may damge the IAC.

#404 of 768 2006 Sierra Seat Wiring Diagram by jerseyjoe6

Mar 23, 2010 (6:06 pm)

Hello All...
New to this forum, and I'm looking for a wiring diagram for 2006 Sierra seats.
I'm not sure what options are in these electric seats... I picked the seats up out of a wreck... put them in my Willys Jeepster, now would like to make them work.
Any help and assistance would be greatly appreciated. (Printed pdf file would be superb!!
Thanks,
Joe in Jersey

#405 of 768 2003 silverado 1500 by gmsteve85

Mar 27, 2010 (5:23 pm)

hey im having some issues with my truck, my starter is acting up. it has been replaced and still have trouble starting. some days it works no problem, then another day ill go to start it and it wont. i turn the key and it almost starts the stalls, then i turn it off and try again it starts rite up. people have been sayin its my ignition swtich is bad, also today my heat is control is acting up it will on turn on if i put the switch a 5 and then it comes on. any suggestions what is goin on with my truck?
           thanks

#406 of 768 Re: brake lights, hazard lights acting up [bonoman26] by yosh1995

Apr 05, 2010 (9:20 am)

Replying to: bonoman26 (Nov 10, 2007 7:10 pm)
Hi,
I was wondering if you found what the problem was on your truck. My 2006 model is doing exactly the same thing, started a few days ago. Any help would be much appreciated.

#407 of 768 Re: brake lights, hazard lights acting up [yosh1995] by gmcustsvc

Apr 05, 2010 (11:52 am)

Replying to: yosh1995 (Apr 05, 2010 9:20 am)
Hello,
I am from GM Customer Service. I would recommend taking your vehicle to a dealership, and at least having them diagnose the problem. That way you know what you are dealing with, and figure out how to proceed from there. Thank you,
Mariah GM Customer Service

#408 of 768 Computer Knows Too Much by thorodinson

Apr 06, 2010 (1:37 am)

With a 2009 Silverado 2500 4X4 HD everything from my mileage to tire pressure and percentage of engine oil still OK is monitored and sent to my email address. I can imagine that the location can be monitored and length of trip recorded. Too much big brother. Can this be shut down or bypassed. Does it take a replacement of the original computer with something that allow me to retain my privacy? The mileage odometer is electronic. Can't imagine that a simple battery change will wipe out that stored info--maybe there is another power source on the motherboard.
 
I don't want or need the big brother approach. This replaced a 1973 Chev 2500 that had two engines replaced and I knew every nook and cranny. Now I have to let the computer run certain operations but want to keep the rest private. Ideas? Thor

#409 of 768 Re: Computer Knows Too Much [thorodinson] by obyone

Apr 06, 2010 (4:07 am)

Replying to: thorodinson (Apr 06, 2010 1:37 am)
You need to disable Onstar. Not sure how you go about it. Perhaps a search on the web might turn something up.

#410 of 768 Re: How to reset a fault code [canayjun64] by 340mopar

Apr 07, 2010 (11:06 am)

Replying to: canayjun64 (Nov 08, 2006 10:06 am)
I came across your article on Edmunds and am curious about your fuel regulator. When running my AC in my 98 Silverado, NOT ALWAYS, the engine will begin to surge and act like it is running out of fuel. The engine then dies, and will not restart until the engine cools completely down, then it is ok, until the next time, Was this what your vehicle was doing? Would appreciate any help.
 
Thanks

#411 of 768 Re: 2003 Chevy Silverado Electrical problem?? [oregonmarine] by lmcgrath5

Apr 11, 2010 (7:43 pm)

Replying to: oregonmarine (Mar 19, 2010 11:59 pm)
Hi oregonmarine. My 2001 GMC Sierra is having similar problems. My Automatic transmission will not shift unless you do it manually and I have no power to the tach, speedometer and my transmission indicator on the dash (PRND321) will not lite up. The gas gauge and the temp gauge also does not work. Then the next day, everything works perfectly. Then it goes back to not working again. Then back to working perfectly. Did you ever find out what is causing these issues? Please, Can anyone help?

Messages Page 42 of 78

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