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Chevy Silverado and GMC Sierra Electrical and Computer Questions

358 messages,  Last post on Dec 02, 2009 at 4:47 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

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#31 of 358 03 gmc trailer towing wiring by champ72 Feb 26, 2007 (7:32 pm)
#32 of 358 03 gmc trailer towing wiring by champ72 Feb 26, 2007 (7:32 pm)
on my 7 way connector the two prongs horazontaly across from each other are my turn & brake lites. the turn lights work but i don't have brake lights. only on the plug the truck lights work fine. it has amber turn lights & red brake lights so there must be a converter some where but i don't know where. any thoughs Replies to this message: champ72 (Feb 27, 2007 7:33 pm) twoskinny (Oct 27, 2008 4:24 pm)
#33 of 358 Re: 03 gmc trailer towing wiring [champ72] by champ72 Feb 27, 2007 (7:33 pm)
Replying to: champ72 (Feb 26, 2007 7:32 pm) well i found the problem on my own. it turns out the fuse in the panel in the side of the dash thats marked [cmhsl][ chassis mounted high stop light] controls the light on the back of the cab & also stops the trailer brake lights from working.
#34 of 358 #7 and #8 engine misfire on 5.3L engine by jcuevas35 Mar 10, 2007 (8:07 am)
i have a 2001 silverado w/ the 5.3L vortech. check engine light started flashing and set code P0300. i swapped plugs, wires, coilpacks, injectors all with different cylinders and scanner still says its 7 and 8 misfiring. i even did a comresion test on both and got 150 out of both. scanner says it could be a possible sensor but names 7 different ones. anyone out there experience this problem or have any suggestions, thanks! Replies to this message: captain83 (Mar 10, 2007 4:07 pm)
#35 of 358 Re: #7 and #8 engine misfire on 5.3L engine [jcuevas35] by captain83 Mar 10, 2007 (4:07 pm)
Replying to: jcuevas35 (Mar 10, 2007 8:07 am) Don't know if this will help you,but I have a similar problem with a 97 Silverado, 5.7 showing cope PO308 (misfire on # 8 cylinder)> I'm geting spark, and I changed the map sensor (problem still there) I just came from another site, where a techniciansuggested I take off the fuel rail & remove all 8 injectors. On the # 7 look for a rust build up. Then clean fuel rail & the top of injectors off with a can of brake clean. Then blow air through the fuel rail. Replace assembly and misfire will be gone. GM bulletin about fuel line rust on these vehicles. I'm going to try this next. good luck with yours
#36 of 358 thanks captain 83 by jcuevas35 Mar 10, 2007 (9:01 pm)
i did remove #8 and #6, and swapped them to see if miss would move from 8 to 6 but had no change on scanner. i will try removing all of them as you suggest, checking for rust and cleaning them with brake clean especially #7. thank you very much! fyi: on another site, a similar problem was caused by a cam sensor and a crank sensor. ill try this first.
#37 of 358 2003 silverado 1500 trouble code problem... Chevy 1500 pros heads up! by fathergoose Mar 30, 2007 (5:48 pm)
#38 of 358 2003 silverado 1500 trouble code problem... Chevy 1500 pros heads up! by fathergoose Jan 18, 2007 (5:37 pm)
I have a code code 1637 L generator circuit.   I replaced the alternator, Code came back.   Jumped a wire directly from the ecu to the generator, for the voltage signal, cause I tought It could be short somewhere. The code still came back. Does anyone have experience with that perticular code? Replies to this message: takc (Apr 15, 2007 8:19 pm)
#39 of 358 airbag light 1997 pick up by diehardgator Mar 30, 2007 (5:48 pm)
just bought 1997 1500 ex cab airbag light on Does anyone know how to resrt it thx
#40 of 358 Re: 2003 silverado 1500 trouble code problem... Chevy 1500 pros heads up! [ by takc Apr 15, 2007 (8:19 pm)
Replying to: fathergoose (Jan 18, 2007 5:37 pm) have same code and condition.have u come up with fix

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