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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

#51 of 354 Re: Silverado passenger door electrical problem [geo9] by jay66 Feb 25, 2007 (5:55 pm)
Replying to: geo9 (Feb 24, 2007 1:30 pm) I disconnected the battery cables and pulled every fuse that had anything to do with power windows, doors, and locks. Still nothing. I will probably just take it in when I get a chance. Thanks for the reply.
#52 of 354 Re: Silverado passenger door electrical problem [jay66] by gbrewer Feb 26, 2007 (4:42 am)
Replying to: jay66 (Feb 24, 2007 11:28 am) I pulled the square fuses in the box under the hood, Not sure if thats what fixed it but its still working like new
#53 of 354 power windows inoperative by jaselvis Apr 26, 2007 (6:34 pm)
I have two problems, first is the power window on the passenger side quit working last summer and then this winter the drivers side quit. When I push the button to operate the window there is no blink from the dash lights to indicate a power draw. Fuses check good and wires look ok. Second problem, the truck has a five speed fan and the first two speeds are not working. Blows fine on 3, 4, 5. I read somewhere that it could be the blower motor harness ? Thanks for any help. Replies to this message: obyone (Apr 27, 2007 11:47 pm) mgandrew (Jun 16, 2008 5:30 am)
#54 of 354 Re: power windows inoperative [jaselvis] by obyone Apr 27, 2007 (11:47 pm)
Replying to: jaselvis (Apr 26, 2007 6:34 pm) There are diodes that need to be replaced for the first two speeds on your controller. You will need to remove the front face panel of the a/c control to get to the diodes. Or you could do what I did and bought a replacement on ebay for $30. diodes are cheaper tho...   If you have a meter you can check for power to the power window motor. Odds are that the motor is dead. Famous problem for the GM trucks. So much so that they stopped shipping the motor and controller together due to the high failure rate of the motor it was starting to cost too much money so now they sell just the motor without the controller.
#55 of 354 Re: Silverado passenger door electrical problem [fivepoint3] by obyone Apr 27, 2007 (11:52 pm)
Replying to: fivepoint3 (Jan 28, 2007 8:12 am) If you really want that bulletin you could get it for $14.95 at www.alldatadiy.com   Just subscribe to your truck's year and it will list all 120 TSBs out on your truck. Who knows you might find other items of interest....
#56 of 354 04 GMC 2500 Sierra Electrical Problem by stoneysmith Apr 29, 2007 (3:37 pm)
I issues started with a gage cluster going bad which I replaced about a year ago About six mouths age my heater fan started to cut out every once in a while seeming to draw on the system and to the point of reducing the idle and almost stalling out the eng. At the same time just once I tried to start the truck and when I turned the key I just got some clicking and the gages went a little crazy. After replacing the blower things seemed fine. Just last week the same starting issue has started up and even a low rough idle. I am not sure what to do but I know the dealer will just tell me to bring it in when it is having the problem. One other thing that is going wrong is my trailer tow will not activate I am a little werrie that I am driving a time bomb
#57 of 354 Battery Lot Rot by cougartwin May 12, 2007 (7:58 am)
Yesterday morning my 2006 Silverado 3500 Duramax 9,900 miles,,,, would not start. GM had it hauled to the local dealership. Diagnosis was "LOT ROT" of the batteries. The service manager explained to me that the salespeople are "supposed" to start every vehicle every few days. If they fail, then the batteries drain. Their remedy is to get the battery cart and cables then jump start the vehicle. After this occurs several times, the batteries fail,,,,,,,, thus,,,,, LOT ROT. The dealership replaced the batteries. No charge. My concern is,,,,,,,, after all that "monkeying" around with charging,,,,,,,,,, have other components been weakened??? There are a lot of computer modules etc. This may be the beginning of several incidents. I am considering purchasing an extended warranty. I love this truck. I've had new Dodges, Fords, all diesels,,,,,,this one is the best. Thanks for your time. Cougartwin Replies to this message: 1offroader (May 12, 2007 5:49 pm)
#58 of 354 Re: Battery Lot Rot [cougartwin] by 1offroader May 12, 2007 (5:49 pm)
Replying to: cougartwin (May 12, 2007 7:58 am) I'm no expert on diesels, but the electrical systems shouldn't be that much different than a gas pickup. In fact, they should be more heavy duty.   That said, normal battery charging should not damage an electrical system. All you are doing is running a current to battery terminals, and cables, that normally produce such as current.   Batteries die because they don't like to be run all the way down. I'm sure there's a physio-chemical reason for that but I don't know what it is.   I would have the alternator/charging system checked just because a weak system could have caused the batteries to get run down. Otherwise don't worry about it - that's my advice.   1offroader
#59 of 354 90?-94plus? wiper transfer arm plates/bushings by 488 May 10, 2007 (5:29 pm)
#60 of 354 90?-94plus? wiper transfer arm plates/bushings by 488 May 10, 2007 (5:29 pm)
Looking for the brass plates/bushings that connect the wiper motor and the arm that transfers motor movement from the motor to the base of the wiper arm. 1990 and 1994 have the same set up. The plates unbolt form the transfer arm BUT gm will only sell the complete arm. A $5 part ends up costing $50 plus. So far no luck with the local jobbers.

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