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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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#61 of 358 2000 Silverado Alternator Battery problem?? by gholde Feb 22, 2007 (5:02 pm)
#62 of 358 2000 Silverado Alternator Battery problem?? by gholde Dec 29, 2006 (2:29 pm)
I have a 2000 silverado ext 4x4 5.3l that I have been having a little problem with.   A few days ago I was driving and noticed the battery light come on and the volts gauge was reading around 10 -11volts. I turned off all accessories and headed her for home.   Once home I took the battery (delco factory) to Canadian tire for them to test it. It tested ""replace". So I did with a new 875cca terminator battery. When I installed the new battery the truck started fine but I noticed the battery warning light was still on. I let it run for 20min or so to see if it would charge. (or what ever was wrong might magically fix itself) The light didnt go out so I tried some of the accessories to put a load on it. The wipers and blower motor ran but noticeably slowly.   I just decided to let the truck run with all accessories off. The battery light didn't go out so after running for 1/2 hour or so I shut off the truck and the the battery now shows 11.7V across the terminals.   I charged the battery back up to show 12.6V across the terminals.   Then I started the truck and checked the voltage across the terminals with the truck running (no access on at all)......11.3V....What the.....and the bleeping battery warning light is still on.   I tried revving the truck to 2000-2200 rpm (no access on at all) and the voltage across the battery went up to 11.49 at one point but it also fluctuated down to 11.27 also....   Does this sound like a new alternater to go along with my new battery???? What are the odd that both the battery and alternator would crap on the same day???   PS. I have never had another issue with this truck until this Replies to this message: bmxkid7117 (Dec 30, 2006 1:08 am) tonkatoy1 (Dec 31, 2006 1:05 am) kwh924 (Feb 22, 2007 5:02 pm)
#63 of 358 Re: 2000 Silverado Alternator Battery problem?? [gholde] by bmxkid7117 Dec 30, 2006 (1:08 am)
Replying to: gholde (Dec 29, 2006 2:29 pm) My brother and law had this problem sorta with his maxima. you more than likely put too much strain on your alternator with the poor battery, which could result in this behavior. i was always told (although this doesn't have anything to do directly with your problem) never to just jump a dead battery and then drive it. let it sit for a while to accurately charge the battery without putting strain on the alternator that isn't necessary.   good luck
#64 of 358 Re: 2000 Silverado Alternator Battery problem?? [gholde] by tonkatoy1 Dec 31, 2006 (1:05 am)
Replying to: gholde (Dec 29, 2006 2:29 pm) I would be suprised if your battery had a problem at all. If the person that tested the battery didn't charge it first, then of course it will look like it's bad when in all reality it's just dead. Batteries have to have a good charge on them before you test them. Your alternator is not working. Even if you have a bad batery, your alternator will still keep your truck at about 14.5 volts.
#67 of 358 Re: 2000 Silverado Alternator Battery problem?? [gholde] by kwh924 Feb 22, 2007 (5:02 pm)
Replying to: gholde (Dec 29, 2006 2:29 pm) I ahve a 2000 Silverado Ext cab Z71 with the 5.3 like yours and I've had similar problems. On mine it turned out the cables were so corroded that it kept interupting hte batteries connection causeing the truck to actaully cut off and on while I was driving it with the battery light on. The side post batteries they used are real bad about corrosion so that might be the problem but I wouldn't be surprised if it did toast your alternator too because mine was fine after I replaced the cables for a little bit and nowthe alternator seems to be burning out.
#68 of 358 1997 z-71 by fsurob4 Jan 17, 2007 (6:35 pm)
#69 of 358 1997 z-71 by fsurob4 Jan 15, 2007 (7:23 pm)
I just bought a 97 z-71 suspension lift kit dynomax exhaust, and 36 inch irok radials. Dude took real good care of the truck, it has 139000 miles, but they are from driving 20 miles to work then 20 miles back home every day. The other night me and my buddies decided to go out the spot and hang with some friends(17 years old, still in high school, NC), well i put it in 4wd and might have gone a little to hard because it was night and i under estimated the whole but it wasnt bad at all. Well i hit the whole and bounce twice and everything just goes out lights radio every thing i was wondering if anyone new what this was, about 1 min later it turned right back on and cranked like a chevy does quick and easy and drives fine. I would appriciate some feed back, thanks. Replies to this message: fsurob4 (Jan 15, 2007 8:53 pm) kcram (Jan 17, 2007 6:35 pm)
#70 of 358 Re: 1997 z-71 [fsurob4] by fsurob4 Jan 15, 2007 (8:53 pm)
Replying to: fsurob4 (Jan 15, 2007 7:23 pm) this was the first time taking this truck off-road, so it has never done this before it just randomly did this. Replies to this message: kcram (Jan 17, 2007 6:35 pm)

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