2000 Suburban- electical issue? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DBLSPRT68 · 10-06-2010, 10:21 AM

Hay all, we've had our 00 Suburban/Yukon XL for a few weeks now. Everything is fine except for yesturday. We cranked up, went down the road about 1 mile and shut off. When we reached to open the doors they were locked. The unlock button didn't work, and would not turn over with switch. Nothing would work? A complete electrical disconnect??? I manually unlocked the door, opened hood and checked everything. Luckly, we had a booster box. I used that to jump the battery. Car started fine...... Now everything checks out fine?? Has anyone ever had this happen to them?? Really stumped here?????? Alternator charging 14.4 volts. Battery is 12.5 with car off. David

**truckdude239** · 10-06-2010, 12:33 PM

need to load test the battery it can have 12.5 volts and still be bad. hook your metter to the battery and have some one start the truck watcht eh metter if it drop below 11-10 volts the battery is bad

DBLSPRT68 · 10-06-2010, 02:12 PM

Thanks, was going to do that tonight. Might even switch out battery, with known good one. Wife and kid use this truck. It's odd that when we shut the truck off, the whole truck went "black" (no power). The current battery is 3 years old. I hope we didn't get a LEMMON Yukon eXtra Large......

danomano · 10-06-2010, 02:48 PM

We had a same issue. It turned out to be the battery cables at the battery. My positive is double stacked and when it would happen I could move at the battery and it would run again.
So I bought this for both + and - to fix it.

http://www.autozone.com/autozone/par...6_54176_13546_

**bwood** · 10-06-2010, 09:53 PM

Quote:

Originally Posted by danomano

We had a same issue. It turned out to be the battery cables at the battery. My positive is double stacked and when it would happen I could move at the battery and it would run again.
So I bought this for both + and - to fix it.

http://www.autozone.com/autozone/par...6_54176_13546_

This is where i was going. The cables are notoroius for corrosion/failure.

DBLSPRT68 · 10-13-2010, 10:21 AM

I think I figured out what my "electrical blackout" was from. The pos terminal was a little loose.....

Not about to fall off, just that I could move it... Thanks for the tips on that, but I didn't think that could have been all. I thought the battery might be going out too. So, I've been waiting for the next time to happen, and it hasn't. I will keep my eyes on these. It's been a great truck so far! David

10-06-2010, 10:21 AM	#1
DBLSPRT68 Registered User Join Date: Nov 2000 Location: Ft. Mill, SC USA Posts: 931	2000 Suburban- electical issue? Hay all, we've had our 00 Suburban/Yukon XL for a few weeks now. Everything is fine except for yesturday. We cranked up, went down the road about 1 mile and shut off. When we reached to open the doors they were locked. The unlock button didn't work, and would not turn over with switch. Nothing would work? A complete electrical disconnect??? I manually unlocked the door, opened hood and checked everything. Luckly, we had a booster box. I used that to jump the battery. Car started fine...... Now everything checks out fine?? Has anyone ever had this happen to them?? Really stumped here?????? Alternator charging 14.4 volts. Battery is 12.5 with car off. David __________________ PROJECT TRUCK: 1985 SWB C10 Silverado Black/Charcoal, 1990 V2500 Suburban, 2018 Suburban, 2005 GMC 2500HD CCSB, 2014 Toyota Camry SE, HAD.....1968 Camaro RS/SS Family owned since new; 350 3 speed SOLD Last edited by DBLSPRT68; 10-06-2010 at 10:22 AM. Reason: title change

10-06-2010, 12:33 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: 2000 Suburban- electical issue? need to load test the battery it can have 12.5 volts and still be bad. hook your metter to the battery and have some one start the truck watcht eh metter if it drop below 11-10 volts the battery is bad __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

10-06-2010, 02:12 PM	#3
DBLSPRT68 Registered User Join Date: Nov 2000 Location: Ft. Mill, SC USA Posts: 931	Re: 2000 Suburban- electical issue? Thanks, was going to do that tonight. Might even switch out battery, with known good one. Wife and kid use this truck. It's odd that when we shut the truck off, the whole truck went "black" (no power). The current battery is 3 years old. I hope we didn't get a LEMMON Yukon eXtra Large...... __________________ PROJECT TRUCK: 1985 SWB C10 Silverado Black/Charcoal, 1990 V2500 Suburban, 2018 Suburban, 2005 GMC 2500HD CCSB, 2014 Toyota Camry SE, HAD.....1968 Camaro RS/SS Family owned since new; 350 3 speed SOLD

10-06-2010, 02:48 PM	#4
danomano Registered User Join Date: Dec 2007 Location: Austin,Texas Posts: 146	Re: 2000 Suburban- electical issue? We had a same issue. It turned out to be the battery cables at the battery. My positive is double stacked and when it would happen I could move at the battery and it would run again. So I bought this for both + and - to fix it. http://www.autozone.com/autozone/par...6_54176_13546_

10-13-2010, 10:21 AM	#6
DBLSPRT68 Registered User Join Date: Nov 2000 Location: Ft. Mill, SC USA Posts: 931	Re: 2000 Suburban- electical issue? I think I figured out what my "electrical blackout" was from. The pos terminal was a little loose..... Not about to fall off, just that I could move it... Thanks for the tips on that, but I didn't think that could have been all. I thought the battery might be going out too. So, I've been waiting for the next time to happen, and it hasn't. I will keep my eyes on these. It's been a great truck so far! David __________________ PROJECT TRUCK: 1985 SWB C10 Silverado Black/Charcoal, 1990 V2500 Suburban, 2018 Suburban, 2005 GMC 2500HD CCSB, 2014 Toyota Camry SE, HAD.....1968 Camaro RS/SS Family owned since new; 350 3 speed SOLD

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