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ABS & Parking Brake Lights On. Could use some help

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Old 11-23-2011, 07:40 PM   #51
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by brandon2282
my brake and abs light would come on when it felt like it? (one day then not the other) took it to advanced auto parts and they told me to check the vaccum lines (mine were dryrotted to where you could here them sucking air ) they replaced them and installed them for me for under $2 and fixed it


when you pop the hood its in the top right hand corner by the dash its three lines put together by a connector
what year/engine is your s-10? mine is a 2000/4.3 and may be a little different than yours...
Old 12-04-2011, 01:13 PM   #52
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Re: ABS & Parking Brake Lights On. Could use some help

Since buying my 1996 S10 2.2l several months ago, the ABS light has always been on.

I took it to a brake service specialist to have the codes read. They quoted me $1350-$1400 to diagnose the problem. If I agreed to pay the diagnostic fee, they could then give me the total cost to repair, saying the scanner showed a bad ABS control module, numerous wiring failures and possibly bad wheel sensors.

Total BS. With help from this forum and an ohm meter, I found the front driver's side wheel sensor completely open and both front sensors damaged by abrasion from packed mud around the tone rings in the hubs.

Total cost to repair was $85.98 for the sensors, two cotter pins and about an hour of my time. This was an easy fix. Just sayin...
Old 01-04-2012, 12:13 PM   #53
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by wavrun2000
Yeah mine does it to but not all the time. It is hit or miss, this makes me think that maybe it is just the hub on mine.
hey im new to the site it says your online but i just see very old posts. my name is austin. i have a 96 blazer s10 both my break lights are on. i think my power booster has been out for like 3 months and ive been driving on it. i think that because it was extremely hard to stop but it worked, & the pedal didnt go all the way to the floor. as of last night it does go to the floor and barely barely barely works at all. any suggestions where to start at all?????? please help
Old 01-04-2012, 03:42 PM   #54
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Re: ABS & Parking Brake Lights On. Could use some help

RAhjah,

Do you know anything about brakes?

I'd get all the codes pulled first. Have a pencil in hand and right them down as they are called out. Autozone will do it for free. Then tell us what the codes are if there are any. Otherwise we are just going to have to go over the entire brake system, which is why I asked can you do that? Change pads, take off rotors, look for leaks, etc.

I will tell you to check your vacuum hose and checkvalve on the front of the Booster, maybe you can get lucky and have a vacuum leak and just fiddling with the hose will fix it.

Does anyone know whether Autozone can pull the ABS codes?
Old 01-06-2012, 12:00 AM   #55
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by Ed98

Does anyone know whether Autozone can pull the ABS codes?
My local autozone does not read ABS codes. Does anyone know what the front and rear sensors are supposed to Ohm out at?
Old 01-07-2012, 11:09 AM   #56
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by sukivel
My local autozone does not read ABS codes. Does anyone know what the front and rear sensors are supposed to Ohm out at?
WSS Temp vs Sensor Resistance (S-Pickup)

-40 to 40*F 3915 to 5820 ohms
41 to 110 4760 to 6800
111 to 200 5560 to 8040
201 to 302 6600 to 9406

(S-Utility and T-Truck)

Same temps as above:
920 to 1440 ohms
1125 to 1700
1305 to 2000
1530 to 2310
Old 02-04-2012, 01:07 PM   #57
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Re: ABS & Parking Brake Lights On. Could use some help

I have a 96 chevy blazer. The ABS light came on so i pulled the wheels and found the wire for the right front speed sensor was rubbing the wheel and wore down to the copper and shorted out. I fixed the wire with solder and heat shrink tubing. I then unhooked the battery for a few minutes to try to reset the light. The light stayed on so I took it to have the code read and reset, at Auto Zone. The code scanner came back with no code stored. Had them reset it anyway but the light is still on. The ABS is working, I can't make the wheels lock by braking hard. What can I do to shut the light off? Or could the shorted sensor have messed up something in the control module.
Old 02-04-2012, 02:14 PM   #58
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by MikeS
I have a 96 chevy blazer. The ABS light came on so i pulled the wheels and found the wire for the right front speed sensor was rubbing the wheel and wore down to the copper and shorted out. I fixed the wire with solder and heat shrink tubing. I then unhooked the battery for a few minutes to try to reset the light. The light stayed on so I took it to have the code read and reset, at Auto Zone. The code scanner came back with no code stored. Had them reset it anyway but the light is still on. The ABS is working, I can't make the wheels lock by braking hard. What can I do to shut the light off? Or could the shorted sensor have messed up something in the control module.
you need a scanner that deals with abs codes and erases abs codes. Not a cheep one either, the scanner at auto zone and the likes usually erases typical cel codes, not abs codes. I had to go to a local automotive school that had one. Bought the tool guy lunch. Took him ten minutes.
Old 02-06-2012, 01:56 PM   #59
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Re: ABS & Parking Brake Lights On. Could use some help

The AutoZone here does read abs codes. I had a problem a few months ago and they read the code for me. It turned out to be the rear speed sensor that time, and they reset it. The light went out until the drive home to fix it. After I put the new sensor in, the light went out. Are you saying that AutoZone's ABS code reader is cheap and can't read every code? I suspected operator error. I will try taking it somewhere else. How do you know if they are using a cheap or good scanner? Any other suggestions on where to take it? Most people I ask can't read abs codes.
Old 02-06-2012, 11:07 PM   #60
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by MikeS
The AutoZone here does read abs codes. I had a problem a few months ago and they read the code for me. It turned out to be the rear speed sensor that time, and they reset it. The light went out until the drive home to fix it. After I put the new sensor in, the light went out. Are you saying that AutoZone's ABS code reader is cheap and can't read every code? I suspected operator error. I will try taking it somewhere else. How do you know if they are using a cheap or good scanner? Any other suggestions on where to take it? Most people I ask can't read abs codes.
snap on , their where keys involved too that where inserted into the harness to fit the diagnosis plug. Good luck!
Old 02-11-2012, 04:36 AM   #61
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Re: ABS & Parking Brake Lights On. Could use some help

Guys, just my two cents:
I have a '96 S10 that had similar problems:
ABS and brake lights on, no lockup and no Heater at all.
Turned out to be the relay (middle one of the three under the hood, pass. side, the one furthest to the left is for the fuelpump btw)
However: after replacing the relay and the fan started working, the abs and brake lights went out.
Then after a couple of weeks the ABS came back on, fan still working.
Checked the Fuse in dash, it was OK.

Gonna check the fuse under the hood and the wheel sensor wiring and the brake pads, i suspect the pads since the car wobbles slightly when braking..
Old 04-09-2012, 12:16 PM   #62
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Re: ABS & Parking Brake Lights On. Could use some help

I had a similar problem with the Brake Light and the ABS Light coming on randomly on my daughters 2000 S10 ZR2. After checking the wheel sensors and lines and replacing the vacum lines (including the one all the way back to the tailshaft of the transmission) the lights kept coming on. So, I checked the ground on the radiator support. It was badly corroded and the eyelete end actually popped off the wire as I was cleaning it. I soldered a new end on and cleaned up the connection and added dieletric grease. So far, after about 30 miles of driving, no more lights...fingers crossed this fixed it.
Old 06-24-2012, 08:33 PM   #63
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Re: ABS & Parking Brake Lights On. Could use some help

tried the vacuum lines and still getting lights randomly. i'll check the ground wire next. thanks for the tip...
Old 06-24-2012, 08:41 PM   #64
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by Wicked Mayhem
my lights were on.. brakes always acted fine so im not worried about it. i just cut the traces to the dummy lights so they cant ever come back on.
nice LUV truck (looks like '79 / '80 model) - i drove my dad's through high school and college. it was a '78 2wd standard cab automatic "MICKADO" trim/package. we had to rebuild / replaced the tranny 3 or 4 times... the auto tranny was from GM and everything else was japan... after about 13 yrs of me driving it like is was stolen, i finally spun a rod bearing at ~120k hard miles.
Old 04-01-2013, 11:02 AM   #65
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Re: ABS & Parking Brake Lights On. Could use some help

ok, i have a 2000 blazer with the same problem. I do have a snap-on modis scanner that i'm able to use for diagnostics. I determined it was the VSS not giving a signal to the VCM. I replaced the VSS for about $60. Still doesnt work. checked all fuses and wiring. still No speedo reading have both abs and brake light on and the vehicle wont shift out of first while driving. I tested the wires that go from the blue 32 pin connection on the VCM to the VSS (Green/black & Purple /white) i have continuity on both. I also checked the VSS signal output wire (yellow/black) to the EBCM and i have continuity there too. BAD EBCM or VCM??? It worked fine just the other day. I had an issue with the control wire on the back of the VCM for the Evap vent solnoid and found a loose wire on the back of the white connector and repaired it. so i figured i bumped something, so, I checked all other wires for connectivity on all the connectors. all seem fine. Does anyone else have any tricks or know any secrets for fixing this?? did i miss anything??
Old 04-03-2013, 09:04 PM   #66
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Re: ABS & Parking Brake Lights On. Could use some help

jtfitz23 - sounds like you have a cluster and or harness to cluster problem from what you described

Whomever:
Usually.., from what I have seen at work..., the ABS brake light being on with the brake light being on as well leads to the following:

Low brake fluid or nasty brake fluid in M/C (brake light only)
Speed Sensor (abs sensor at the XX wheel)
The speed sensor wiring
A bad hub/bearing assembly
EBCM module
Corroded fuse in Fuse block
Corroded wires/pins/connectors in fuse block to ebcm or abs or both..
or in worse case...the VCM or harness to VCM

Best way is to get use of a good diagnostic scanner and scan the abs system for codes in its history and pending codes. If it has more than 5 codes.., clear them all and drive the vehicle 10-20 miles - stopping every 5 miles and shutting down the vehicle - yes I mean shut it off. The restart and continue driving another 5 miles. The light most likely WILL come back on...
Rescan the ABS codes....

1) IF it has a bad wheel speed sensor/bad wiring to speed sensor.., it wont take long for that ABS light to come back on... - 1-3 miles or less. Sometimes putting it in reverse, then stopping and shutting it off and then recranking will make the light come back on if it is a speed sensor.
2) IF the EBCM module is going out/defective..., this will show up after the 12-15mile part... Usually the electronics part is the culprit... try it first.., if still no fix.., replace the entire module... bleed the entire system good... and use the scanner to bleed the module...
3) If the VCM is going out.., this could be a fast ABS light or a random ABS light - The mileage you put on it wont matter. Check all the connections and make sure ALL grounds are in good shape. Also check the harness for any broken connections.
I've run into corroded pins in the VCM, bad harnesses, broken wires, you name it..I almost have seen it happen to make a ABS light come on...

Also note: I've ran in to speed sensors that "Showed" the correct mv/ohms coming thru it and, yes, it was still a bad sensor. When hitting a bump or taking a hammer and tapping the rotor.., it would drop to ZERO and then magically restart back to the correct amount.

Hub bearing assemblys are the worse on this. I can guarrentee that usually every week I get 4 to 7 that has to be replaced. Lopping out $100.00 up to $500.00 per hub can get kinda costly to the customers. And I seen some that ppl let go till the stupid wheel fell off. It cost them over $1000.00 and up to fix what all was damaged by letting this happen.
Old 05-01-2013, 06:26 PM   #67
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Re: ABS & Parking Brake Lights On. Could use some help

Here's my story: Went to Arizona for 4 months, came back to Kansas, charged my battery (+cable removed) overnight, started truck the next morning and that was the first time I ever had the ABS light lit (after starting). It's on all the time while the key is on. And it's only the ABS light, not the brake light or anything else. It's a 95 Sonoma 4.3 vin Z, front discs, rear drums. I've been to two places to scan for codes, but neither could connect to the ABS codes. I connected the 2 pins in the OBD connector and got a repeated 1-2 signal, meaning it was communicating, but no DTC codes.

I'm thinking it's the brake control module and it has the broken/cracked solder joints on the board. Haven't done any other troubleshooting at this point.

Any ideas or suggestions?? When the problem is ONLY abs light and it's on ALL THE TIME without ANY OTHER problems, what is the likely cause of this??
Old 05-01-2013, 07:14 PM   #68
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Re: ABS & Parking Brake Lights On. Could use some help

Sounds like your ABS controller took a dump. Try going to O'Reilly's and ask to use their Code scanner. They should have an Innova LAT3120. After it connects and scans DTC's, you can press the "DTC" button on the bottom left and choose to scan the ABS codes.
Old 05-06-2013, 04:27 PM   #69
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ABS Problem FIXED

I fixed my problem. When I first had the problem, the truck had been sitting in the garage for 4 months. Came home, charged the battery, started the truck and the ABS light never went out. Since I hadn't used the brakes, hadn't moved the truck, my reasoning is that it MUST be the control module. There was no chance of a bad reading from any of the sensors because no movement of the truck.

So I took a chance, found a new GM ABS Brake Module GM# 88880026 (93-95 S10, GMC Jimmy) on ebay for about $93 delivered to the house. Removed the washer tank (one screw 10mm holds it in above the top of the tank against the fender - turn it sideways to get room to remove the screws holding the module), unplugged 2 plugs on the module, removed the screws, took out the old unit, installed the new unit, replaced the screws (remember where those 2 short ones go), replaced the plugs, re-attached the washer tank. Started the engine, abs light on - but just for a couple of seconds, then OUT like it was never on.

$93 isn't much more than the mail-it-in fixit places, and it's a new module, so I think it's a great investment. And by the way, I went to 3 national chains to have them scan my truck's computer and not one of them could get a reading. I did the terminal short method and got a consistent 1 - 2 reading which means the computer is communicating - but no other DTC codes were found.
Old 05-06-2013, 04:50 PM   #70
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Re: ABS & Parking Brake Lights On. Could use some help

O'Reilly's scanners can do ABS (Innova 3120LAT), but the counter monkey operating it probably didn't know how. That being said, if you were unable to communicate with the ABS controller, that might have been why you had an ABS light on in the first place.

I've been working at O'Reilly #779 in Spring, TX for over 4 years, and some of the stories I hear from customers about my colleagues from other stores and from other competitors stores baffles me. I don't understand how companies that sell auto parts will put people behind the counter that can barely look up a part, let alone tell you how it works or what kinds of symptoms it will cause when it fails.
Old 05-15-2013, 08:34 AM   #71
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Re: ABS & Parking Brake Lights On. Could use some help

My new to me Jimmy has been fine for two weeks and now all of the sudden both the ABS and brake lights are coming on!

Going to scan it now and see if I get a code.

I do have mis matched tires, but they are the same size numerically.
Old 05-15-2013, 09:52 AM   #72
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Re: ABS & Parking Brake Lights On. Could use some help

Well, I just scanned and didn't see anything.


ABS and brake lights were NOT on the dash when I turned the key though.

So you need a special scanner for the brakes?

Looks like I need a C Chassis code scanner?

http://www.obd-codes.com/trouble_cod...ssis-codes.php
Old 05-15-2013, 10:39 PM   #73
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by D.T.
Well, I just scanned and didn't see anything.

ABS and brake lights were NOT on the dash when I turned the key though.
Very common when they are beginning to fail. The will intermittently be on or off when you start the vehicle. From what I understand there is a relay that fails inside the ABS controller.

Quote:
So you need a special scanner for the brakes?
Yes, you need a scanner that can talk to your ABS controller. Try going to O'Reilly's and ask to use their Code scanner. They should have an Innova 3120LAT. After it connects and scans DTC's, you can press the "DTC" button on the bottom left and choose to scan the ABS codes.

Quote:
Looks like I need a C Chassis code scanner?

http://www.obd-codes.com/trouble_cod...ssis-codes.php
Old 05-15-2013, 11:13 PM   #74
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Re: ABS & Parking Brake Lights On. Could use some help

I had the same problem with my 2000 blazer. I replaced the ebcm with a known good unit. Problem solved. There are some companies online that can repair your ebcm. There are solder joints on the circuit board that crack. I think it's www.modulemaster.com

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Old 05-15-2013, 11:40 PM   #75
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Re: ABS & Parking Brake Lights On. Could use some help

im starting to have the same thing with mine 03, when I first turn it on in the morning its off, after driving awhile it comes on, but after stay off for couple hours that cools down a bit it goes off again and so on so forth...
Old 07-26-2013, 08:41 AM   #76
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by IMScorched
I just stumbled upon a way to get those stupid lights to go out!! With the engine running, I turned the ignition key "Just A Little" toward the start position until the lights go out (My shift indicator, odometer, and clock also went out), release the key and it will recycle the entire light cycle again and GUESS WHAT!!,, the ABS and Brake Light went out!!! Be Careful NOT to turn the key all the way to the START Position. I decided to take it for a test drive to see if they would stay out, no such luck!! 25 yards down the road they came back on! While I was still moving, I repeated the above procedure, same results, the lights went out. I proceeded with my test drive. I ended up going almost 10 miles with no ABS or BRAKE Light glowing in my eyes!! This is the first time in about 10-12 months that those foolish things haven't been on!
What a pleasure that was!!!!! Not sure at this point if it will last... (Fingers Crossed) Hopefully this might shed some light on a new CAUSE to be investigated.. Maybe it recalibrates some sensor etc., I haven't a clue. Please post YOUR results as I am extremely curious whether this is a fix or just my S**t Luck..
My abs and brake also turns off when I jiggle the key when its running. My lights came on one day after I adjusted the rear drums.
Old 07-31-2013, 06:21 PM   #77
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by jasond
I had the same problem with my 2000 blazer. I replaced the ebcm with a known good unit. Problem solved. There are some companies online that can repair your ebcm. There are solder joints on the circuit board that crack. I think it's www.modulemaster.com

Sent from AutoGuide.com Free App
my 2000 blazer 4.3l is having the same brake problem both abs and parking and my check engine light is on says something about tranny but already put in a new solenoid and flushed fluids haven't checked hoses or ebcm or sensors
Old 10-12-2013, 09:08 AM   #78
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Re: ABS & Parking Brake Lights On. Could use some help

If you can solder you can probably do this fix yourself:
Old 10-12-2013, 09:09 AM   #79
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Re: ABS & Parking Brake Lights On. Could use some help

If you can solder you can probably do this fix yourself:

or maybe these guys can help you out

http://www.myairbags.com/abs.php?gcl...FdBxQgodeWQAOQ
Old 10-16-2013, 10:46 AM   #80
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Re: ABS & Parking Brake Lights On. Could use some help

am I the only one here who disabled his ABS?
Old 10-16-2013, 07:10 PM   #81
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by barnyardTERROR
am I the only one here who disabled his ABS?
Nope, I removed the controller from my 2001 about 2 years ago. I'm in the process of deleting it completely.
Old 03-10-2014, 08:11 AM   #82
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by 70ChevelleRagtop
I had a similar problem with the Brake Light and the ABS Light coming on randomly on my daughters 2000 S10 ZR2. After checking the wheel sensors and lines and replacing the vacum lines (including the one all the way back to the tailshaft of the transmission) the lights kept coming on. So, I checked the ground on the radiator support. It was badly corroded and the eyelete end actually popped off the wire as I was cleaning it. I soldered a new end on and cleaned up the connection and added dieletric grease. So far, after about 30 miles of driving, no more lights...fingers crossed this fixed it.
hello I have the same problèm with the ABS and brake lights comming somme times and I read lot of things and the ground could be one of the problem

is any body can explain ti me "very simply" because I am in France where is the ground undun the radiator as I don't find it

thanks
Old 05-09-2014, 01:13 PM   #83
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Re: ABS & Parking Brake Lights On. Could use some help

Hellcat1, Removing the controller, is no problem.
Were you able to disable the dash light?
Old 05-09-2014, 10:35 PM   #84
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by eeore39648
Hellcat1, Removing the controller, is no problem.
Were you able to disable the dash light?

Not as of yet, but that is due to having a 7MO son at home. I haven't had much time or money to work on the projects. My S10 is apart in the garage for a Turbo conversion.
Old 05-14-2014, 03:55 PM   #85
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Re: ABS & Parking Brake Lights On. Could use some help

I know brake cleaner will mess up the wheel sensor. I ruined 2 of them. Now I just wipe the dirt off with a dry rag.

And the brake light will come on with the abs light. When you first start the truck the abs module runs a self check. If a problem is found it illustrates the abs light. The fact the light comes on should mean the module is functioning properly.
Old 05-17-2014, 04:26 PM   #86
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Re: ABS & Parking Brake Lights On. Could use some help

Thanks, serpentracer.
Is there any way to Reset the ABS light?
Or disable the ABS dash light?
Old 05-17-2014, 06:11 PM   #87
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Re: ABS & Parking Brake Lights On. Could use some help

Not that I know of. Other than removing the bulbs or fixing the problem. When you fix the issue the light will stay off.

With so many in junk yards fixing it shouldnt cost much. I bought my wheel sensors from one 6+ years ago and they still work.
Old 05-17-2014, 10:19 PM   #88
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Re: ABS & Parking Brake Lights On. Could use some help

There is no bulb.
I took out the instrument cluster, it is like a circuit board.
When I got the truck both front wheel sensors the wires were broken. I replaced them both.
I have been told to remove the battery cable for at least 3 hours, and it will reset.
Anybody here heard that?
Old 05-18-2014, 10:57 AM   #89
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Re: ABS & Parking Brake Lights On. Could use some help

must be led then. there must still be a problem.
not sure if the codes have to be reset because I didn't do it to mine.
Old 05-19-2014, 08:24 PM   #90
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Re: ABS & Parking Brake Lights On. Could use some help

Disabled the ABS LED light. Thanks to the help of terry10, a member here.
Here is how, follow the link step by step How To!
http://www.s10forum.com/forum/f221/0...ml#post7960689
Old 05-22-2014, 08:40 PM   #91
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Re: ABS & Parking Brake Lights On. Could use some help

I had the same trouble and I found a cool video on youtube. Here is how I fixed mine...Take out the air cleaner box and up against the radiator support you will see one single wire that grounds to it. Take it off and wire brush it and the radiator support where it grounds. Problem fixed.
Old 05-22-2014, 08:42 PM   #92
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Re: ABS & Parking Brake Lights On. Could use some help

That ground I was talking about also will throw off the shift points so when the abs and brake lights are on you will notice it will be sluggish too.
Old 05-23-2014, 08:21 AM   #93
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Re: ABS & Parking Brake Lights On. Could use some help

Quote: Originally Posted by luvthatsound40
I had the same trouble and I found a cool video on youtube. Here is how I fixed mine...Take out the air cleaner box and up against the radiator support you will see one single wire that grounds to it. Take it off and wire brush it and the radiator support where it grounds. Problem fixed.
Happy it worked for you!
I cleaned up the Ground point, under the air box. No Go, for my truck!
Old 05-24-2014, 03:32 PM   #94
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Re: ABS & Parking Brake Lights On. Could use some help

check your ABS fuse, thats what mine does when the fuse is blown/disconnected.
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