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Chevy Silverado and GMC Sierra Electrical and Computer Questions

354 messages,  Last post on Nov 20, 2009 at 11:13 AM

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

#263 of 354 electric spark control module code comes up by mdavid Dec 22, 2008 (9:32 pm)
i bought a '95 gmc sierra 2500 that needed a new engine. when i bought it, the engine light came on. my mechanic friend changed teh engine with a 2000 rebuilt engine. its a 5L 305, however, after changing the engine and swapping some parts around the engine light is still on. he states teh engine runs great and he looked for codes and the code for the electronic spark control module came up. he looked for the module and says he found it integrated with teh computer, however, he says the truck is a '95, but the wiring harness is factory installed and for the yrs 96 - 2000.   does anyone know how to get my engine light to quit flashing when only that one code comes up for the module or what the problem is??? and if i, as he is suggesting it may be the computer, what yr/truck do i get teh computer from???   he says he checked the vin with chev and with his code reader and both say its a 95 but he can't figure out why it has a ;96 - 2000 wiring harness.   any replies would be appreciated and can be emailed to me if possible to, snooky71hotmail.com   thanks   mike d
#264 of 354 Mileage computation by grampy1 Dec 29, 2008 (4:18 pm)
2004 Sierra,auto,4.8 lit. work truck.    Does this truck really have the mileage reminder for oil changes that notifies you when its time to change the oil? Thanks
#265 of 354 Re: Intermittent Computer Problem [azjas] by dale08 Dec 30, 2008 (4:31 pm)
Replying to: azjas (Jan 03, 2008 4:13 am) Hello,   Can you tell me what fixed your truck, I have the same problem with my truck...                           Thanks,
#266 of 354 Intermittent Computer Problem by dale08 Dec 30, 2008 (4:40 pm)
HEY GUYS,   MY TRUCK DOES THE SAME THING WITH THE GAUGES, DOES THE IGNITION SWITCH FIX IT? AND WHERE CAN I GET IT? 1 HAVE A 2000 SILVERADO
#267 of 354 04' Silverado 2500HD 6.6 Litre Diesel by cor3720 Jan 02, 2009 (4:10 pm)
Upon start up, engine would run very rough, excessive noise, no power or rise in RPM's upon pressing gas pedal. Checked oil and it was low so I replaced it as I heard there was a sensor that wouldn't allow engine to run normally. This didn't help. The weird thing is if I start the truck, turn it off, drive at idle 3-4 times, off, on, off on, you get the picture. It will run fine for the rest of the day. Then the next mornig, I do the process all over again. Fuel filter was replaced about 10k miles ago. I have opened the wing nut on the bottom of the fuel filter in case there was water in the fuel. Any help would be helpful as money is super tight right now. The check engine light is on when it runs bad, then it will go off when it is running good. Thanks
#268 of 354 CodeP1516 by patsyms Jan 05, 2009 (11:45 am)
Last week I had the throttle body replaced. Brought it home and parked it until today. My 2003 silverado is doing the same thing it did before I replaced the part. Do I need to drive it more, or something to "reset codes"?
#269 of 354 Outside mirrors remote adjustment stopped working...... by lromjue Jan 05, 2009 (1:35 pm)
I have a 2001 GMC,Sierra, 95K. Recently outside mirror adjustment control stopped working. In past, controller has on a very few occasions not worked or at least was intermittent, but always finally did work. Yesterday found that it was completely dead. No response at all.   I will check fuse. Where will the fuse be located?   If fuse is not the problem what else should I look at?   Thanks.......................larry
#270 of 354 temp gage fails high by blackpacific1 Jan 05, 2009 (7:39 pm)
I have a vintage 1993 Chevy Blazer K1500 that still runs like a sewing machine after 235K miles. But today, the temp gage went tit$ up. That is, it reads off the high side of the gage even with the engine is stone cold, ignition switch on or off. The computer has stored a code "15". I followed the Haynes manual recommendation to remove the glovebox and wiggle the connectors to the computer, no change. I unplugged the engine coolant sensor connector, no change. Do I have an open or a short? I hate electrical issues. I was planning on replacing the sensor, which may happen tomorrow, but I fear the problem resides somewhere behind the instrument cluster. has anyone in the Silverado forum encountered a bad gage problem like this one? Replies to this message: blackpacific1 (Jan 06, 2009 2:29 pm)
#271 of 354 Re: temp gage fails high [blackpacific1] by blackpacific1 Jan 06, 2009 (2:29 pm)
Replying to: blackpacific1 (Jan 05, 2009 7:39 pm) I purchased a temp sensor, but the connector had a different pin arrangement. I took it back to the auto parts store who showed me that the 350 TBI has two coolant temp sensors, one for the computer, and one for the gages. The one close to the thermastat is for the computer, while the one tucked back near the firewall is reserved for the gages. I'm going to replace that one tonight.
#272 of 354 Sierra 2001 1500 intermittent charging failure by elentz Jan 10, 2009 (10:06 am)

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