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Chevy Blazer GMC Jimmy Electrical Problems

472 messages,  Last post on Nov 19, 2009 at 4:18 PM

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#51 of 472 Re: GMC Jimmy Instrument Panel Light [crpntrlady] by putterer Jan 07, 2007 (5:02 pm)
Replying to: crpntrlady (Jan 06, 2007 4:45 am) The lights are not LED. The speedo and trip in the center and fuel, temp, oil, volts are all run from the circuit board. The lighting around the panel is bulbs. You have tree fuses that supply to the panel.
#52 of 472 Re: GMC Jimmy Instrument Panel Light [crpntrlady] by repairdog Jan 08, 2007 (2:52 am)
Replying to: crpntrlady (Jan 06, 2007 4:45 am) Those have problems with the circuit card so do a general online search on blazer instrument cluster and you will find fairly cheap solutions such as: 1989-94 Blazer/Jimmy/S-10/Bravada Digital Unit - Repair Cost only $159 USD includes all shipping!! Now only $149! Replies to this message: firstshirt1sg (Jan 13, 2007 5:01 am) repairdog (Jan 14, 2007 4:39 am) pgarrett2 (Apr 09, 2008 11:15 am) judastouch (Apr 09, 2008 11:18 pm)
#53 of 472 Blazer electrical problems by firstshirt1sg Jan 13, 2007 (5:01 am)
Replying to: repairdog (Jan 08, 2007 2:52 am) I own a 2000 Blazer and recently the thermometer in the inside console has been displaying the wrong temperature how do I repair this malfunction? Replies to this message: repairdog (Jan 14, 2007 4:39 am) pgarrett2 (Apr 09, 2008 11:15 am) judastouch (Apr 09, 2008 11:18 pm)
#54 of 472 Re: Blazer electrical problems [firstshirt1sg] by repairdog Jan 14, 2007 (4:39 am)
Replying to: firstshirt1sg (Jan 13, 2007 5:01 am) Only displays correctly after driving cause the thermistor is up by the radiator and display updates after moving. Search the posts I posted exact info awhile ago.
#55 of 472 Re: 2001 Chevy Blazer: Electrical Problems [cbarnett] by bethker Jan 15, 2007 (4:43 pm)
Replying to: cbarnett (Jul 14, 2006 5:36 am) Did you get a fix on this? I have same problem. Help! Replies to this message: firstshirt1sg (Jan 27, 2007 2:43 am) repairdog (Jan 27, 2007 4:41 am)
#56 of 472 Re: 2001 Chevy Blazer: Electrical Problems [bethker] by firstshirt1sg Jan 27, 2007 (2:43 am)
Replying to: bethker (Jan 15, 2007 4:43 pm) No I could not find repairdog's earlier post Replies to this message: repairdog (Jan 27, 2007 4:41 am)
#57 of 472 Re: 2001 Chevy Blazer: Electrical Problems [firstshirt1sg] by repairdog Jan 27, 2007 (4:41 am)
Replying to: firstshirt1sg (Jan 27, 2007 2:43 am) Blazers 3/2000-6/2001 manufacture dates had an NHTSA recall ID#01V36400 on like a half million vehicles for the multifunction switch developing an open circuit in the harzard carrier results in only the top mounted brake light working. Dealer installs gm kit #15174447 in a few minutes by pulling that harzard switch part out with pliers (have to get it all) and inserting a new one. Free if in the year span so GM can run your VIN and tell you.
#58 of 472 About those windshield wipers ... by jlflemmons Jan 30, 2007 (12:58 pm)
GM had a problem with all of their models regarding the intermittent start/stop of the wipers. Because of my background, I decided to do an RCA (root cause analysis) of the failure and see what was going on once and for all. Here is what I found:   The wiring harness to the circuit board is not supported. Because of this, movement occurs during driving that applies vibration and stress to the connector on the circuit board. If you have the described problem, remove the harness, then the circuit board, and look closely at the solder joints of the connector. In every case of this happening (and I have seen many) I found small hairline fractures in the solder connections. In each case, the solder was removed and the solder pads cleaned. Then, using a rosin core solder, the harness connector was resoldered to the board. The board was reinstalled and the harness plugged back in. Then, I took a tie wrap and secured the harness to the firewall so that it could no longer move around and flex the connection to the board.   This repair has been done on dozens of GM trucks, cars, and vans and the problem was corrected in each case. By securing the harness, the problem has not recurred.   And it is a lot cheaper than replacing the board!   Jim Replies to this message: david565 (Jan 30, 2007 3:01 pm) jlflemmons (Jan 30, 2007 4:56 pm)
#59 of 472 Re: About those windshield wipers ... [jlflemmons] by david565 Jan 30, 2007 (3:01 pm)
Replying to: jlflemmons (Jan 30, 2007 12:58 pm) I had the same problem with my '98 Blazer. I switched out the wiper control pulse board for about $30 and it fixed the problem. Not too hard to do - remove the 4 screws holding the housing together and the board comes right out. You need to get silicon sealer and seal around the cover when you put it back on to keep moisture out. The housing is located towards the drivers side against the firewall in the engine compartment and has wiring coming out the side. I didn't know about securing the harness - I'll do that to prevent future problems - Thank You. Replies to this message: jlflemmons (Jan 30, 2007 4:56 pm)
#60 of 472 Re: About those windshield wipers ... [david565] by jlflemmons Jan 30, 2007 (4:56 pm)
Replying to: david565 (Jan 30, 2007 3:01 pm) You are right, changing the board is not hard to do on most GM products. Now, those dustbuster vans (Olds, Chevy, Pontiac) were a little tricky as the wiper motor is way up in there.   I had just seen and heard about so many of these failures that my curiosity got the best of me and I had to figure out what was going on.

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