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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Electrical and Computer Issues
348 messages, Last post on Nov 06, 2009 at 10:33 PM
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The a/c, heater electronic display flashes on and off and I have no control of the temperature. The display unit has been replaced once, with the same symptoms. The condensor coil was replaced and the system re-charged when the problem started. I understand the display had to be removed in order to have access underneath the dash. Any ideas on to how to repair this would be greatly appreciated by both me and my mechanic!! Thanks, Kenneth
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Replying to: kb52 (May 11, 2009 6:10 am) Who knows...it might be just that. Good luck! |
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I have a old but well kept silverado from -89 it is a 6.2 diesel, and everything is working just smoothly. the "service car soon" lamp is lit, and i would like to know what the warning lamps indicates. therefore i am looking for a owners manual on the internet, but seem to find only for newer models. anybody know where to find this? i actually bought the heyes manual, but cannot locate it there, Regards J
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Replying to: johnny_t (Jun 03, 2009 4:25 pm) http://www.haynes.com/products/year/1989/make/Chevrolet/model/Pick-Up/productID/- - 246 I've been using them fo all of my vehicle I owned and they are very helpful. |
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I have a new body style 2007 Silverado, quad cab. When I use my left blinker, my blinker and my back up light both blink. After a few moments, the blinker blinks very fast. I changed the bulbs. I have over the 35,000 miles on the truck. Any suggestions?
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Replying to: bob2007chevy (Jul 28, 2009 2:52 pm)
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Replying to: obyone (Jul 28, 2009 3:13 pm) 
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The alarm in my 2000 Sierra went off and I couldn't stop it no matter what I did. I used the remote and the key to no avail since this would only stop it for a few minutes to a few hours, then it would go off again and the only way to stop the noise was to disconnect the battery. I tried for a couple of weeks to figure it out myself but was not able to resolve anything. This was in mid June I finally took it to an alarm specialist and they checked the truck out from top to bottom and concluded that the problem was not with the aftermarket alarm the dealer had installed but with the factory alarm that came with the truck. I did not know they were separate but still functioned with the one remote. He showed me by changing the sound in the aftermarket alarm, then triggered the alarm in different ways to activate first one then the other. This was possible because the factory alarm doesn't have motion sensors, but is activated by the opening of the doors and such. By doing this I was able to distinguish the two alarms going off by their different sounds, with the factory alarm sounding the horn while the aftermarket sound was a siren. They did all this so that I could take the truck home and the next time the alarm went off I would know which one had gone off by the sound, i.e. the horn or siren. That night the alarm went off and just as he said, it was the factory alarm since the horn sounded and lights flashed. I disconnected the battery and next day called the alarm place. He said they would not be able to help me since they only worked on aftermarket alarms because the factory alarms are tied into the BCM which he thought needed to be reprogrammed in order to fix the problem. He said it was a computer problem not a physical problem (as in wiring) and for this I needed to take it to the dealer. The following week I took the truck to the dealer and explained everything that had occurred and the information from the alarm specialist. Dealer had never heard of this problem. He said they would look into it and call me when they had any information. Next day I got a call and was told that they needed it for one or two more days. Two days later I was called and told that all physical components were okay, and that the problem was with the BCM. BCM was replaced, I took the truck home, and unfortunately, the alarm just went off last night again. Will be contacting the dealer again. This is also an answer to post #30, #221, and #260. I will keep you informed as I find out additional information. If anybody can help, please answer. Thanks.
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Replying to: whatnxt (Jul 29, 2009 5:43 pm) Which alarm? When did you install the aftermarket alarm? Which remote are you using? If I'm not mistaken, the aftermarket alarm also ties into the BCM.
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