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Thad in AR. 
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Joined: 12 Sep 2009
Location: Arkansas
Points: 9273
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 Topic: 2000 GMC electric motor keeps running
Posted: 21 Jun 2019 at 5:00pm |
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My truck has an electric motor that keeps running. It bolts to the frame left of the transfer case. It looks like brake lines going to it.
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Stan IL&TN
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Joined: 13 Sep 2009
Location: Elvis Land
Points: 6730
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Posted: 21 Jun 2019 at 5:20pm |
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If that is brake or ABS related have you checked the brake fluid level?
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1957 WD45 dad's first AC
1968 one-seventy
1956 F40 Ferguson
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 77700
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Posted: 21 Jun 2019 at 8:16pm |
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Like them all, but love the "B"s.
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Steve M Ind
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Joined: 12 Sep 2009
Location: Springport IN
Points: 58
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Posted: 24 Jun 2019 at 8:52am |
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The relay is built into the ABS box. The relay is stuck on and needs replaced or it will run the battery down. Need to replace the controller part of the box. Have seen this many times.
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DaveKamp
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Joined: 12 Apr 2010
Location: LeClaire, Ia
Points: 5637
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Posted: 25 Jun 2019 at 10:48pm |
My '99 Chevy had same thing happen, but the ABS pump kicked on, blew the rear brake line out, and totally emptied the master cylinder...
At 45mph...
With a flatbed trailer in tow...
with 4600lbs of lumber on it...
...heading for a stop sign.... at a 2-way intersection... ... with two tractor-trailers full of grain coming one direction ...and a five-axle dumptruck full of gravel coming the other way...
I was fortunate to have presence of mind to slap the trans into LOW, then grab the trailer brake controller and squeeze it to full, while flipping the GAIN switch to max...
I got stopped about two feet into the intersection... all three drivers saw my trailer tires smoking and knew what was up... they moved over JUST ENOUGH to keep me alive.
Cost of replacing that ABS pump (after lifting off the cab) was seriously in excess of the value of the truck, so away it went.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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desertjoe
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Joined: 23 Sep 2013
Location: New mexico
Points: 13358
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Posted: 26 Jun 2019 at 5:03am |
Hey Dave Kamp,,,glad to see you safely back home from the Great Southwest snake country,,,,,  Dang,,that sounds like you had you a close call,,!! You know,,them vehicles always seem to gain speed when them brakes fail don't they,,,?? There may be one of them trks up for sale up around the Eurica Springs area,,,,,, ,,Chit,,I'm outa here,,,,,
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Thad in AR.
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Joined: 12 Sep 2009
Location: Arkansas
Points: 9273
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Posted: 26 Jun 2019 at 5:16am |
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I checked the fluid and it was ok. I drove it around the place and the brakes work fine with it unplugged. I haven’t had much time to mess with it.
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Steve M Ind
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Joined: 12 Sep 2009
Location: Springport IN
Points: 58
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Posted: 26 Jun 2019 at 8:13am |
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You can unplug it or just pull a fuse, Will not have the ABS function but will have normal brakes and the pedal should feel normal.
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Thad in AR.
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Location: Arkansas
Points: 9273
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Posted: 26 Jun 2019 at 10:25am |
 Steve M Ind wrote:
You can unplug it or just pull a fuse, Will not have the ABS function but will have normal brakes and the pedal should feel normal. |
Is it safe to drive to work? They feel fine.
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Steve M Ind
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Joined: 12 Sep 2009
Location: Springport IN
Points: 58
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Posted: 26 Jun 2019 at 3:16pm |
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Some of my customers never fix them. Just drivem with the ABS light on.
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