ABS Light Due to Brake System Control Unit Failure on GMC Sonoma

The Anti-lock brake system (ABS) control unit may fail internally causing the ABS warning light to illuminate.

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Average mileage: 118,256 (44,561–220,000)
12 model years affected: 1991, 1992, 1993, 1994, more1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
73 people reported this problem
41 people shared problem details
2001 GMC Sonoma135,000
ABS and BRAKE lights come on at different times. Sometimes while driving. Most of the time after short hops to different stores etc. If I turn the engine on and off 3 or 4 times the lights will stay off for a day or two. I've been told the ABS control module is bad. Can not afford to get it fixed at this time.
18 people like thisFlag inappropiate
The ASB light stays on but have had no issues with braking.
10 people like thisFlag inappropiate
2003 GMC Sonoma69,000
Abs light come on & dealer said the the abs brake module is bad. It may stay off during cold mornings but always comes on when outside temp is warm. Brakes still operate well. I will have to pump brakes if car begins to skid. Would replace if I could find module cheap.
8 people like thisFlag inappropiate
2003 GMC Sonoma114,111
ABS warning light comes on and sometimes doesn't but no effect to the braking function.
7 people like thisFlag inappropiate
2001 GMC Sonoma44,561
Abs light is on. Truck wont run more than 30 mph..
6 people like thisFlag inappropiate
2003 GMC Sonoma53,000
Brake warning lights(ABS and Brake)come on erratically but brakes still work. ABS braking has never worked. Thanks GM.
6 people like thisFlag inappropiate
1.ABS Light to Brake System IS ON,AND HAVE NOT FIXED
3 people like thisFlag inappropiate
abs light would come on all the time and when the brakes were pessed they would pulsate
3 people like thisFlag inappropiate
ABS Light comes on and then brakes work irratically
3 people like thisFlag inappropiate
2001 GMC Sonoma68,750
abs light on--no brake problems noted
2 people like thisFlag inappropiate
2001 GMC Sonoma82,000
ABS light would come on intermittently, I have already paid a shop to rebuild a controller box 350 bucks!
2000 GMC Sonoma141,009
abs light come
2001 GMC Sonoma97,642
I pulled the fuse to the ABS control module. This also disabled the cruise control, but now the truck is able to stop at slow speeds.
ABS light lights intermittently. Every so often there was a loud noise under the hood when brakes were applied.
2002 GMC Sonoma85,940
I have owned my Sonoma for 9 years. 5 years ago, at 85,940 miles, the abs and brake light started coming on intermittently. it does it more when it is warm outside and all the time when the temps are over 100 degrees. I have tested all sensors, and they are all still good. This led me to the ABS control. I know it is bad, since my Tester tells me it is. I did find the part at a local parts dealer for 245.00, but once installed, it has to be reprogrammed as it comes blank. The replacements are all re manufactured parts. Planning to purchase this soon and have it done and over with. the lights have been more of an annoyance than anything. The truck has always stopped on a dime without issue.
2001 GMC Sonoma91,363
Intermittent problem of brake and ABS light coming on at the same time. Seems to happen after heavy stop and go traffic or when carrying a load well within load limits. Brake fluid full and emergency brake off. No problems stopping or with ABS. Lights generally go off the next day. Was told module was bad. I am going to try unplugging connector from module, cleaning, and installing new dielectric grease on connection.
1997 GMC Sonoma180,000
The abs light is almost always on
2003 GMC Sonoma45,000
lights stay on
light stays on brakes work fine first freeze this morning
2001 GMC Sonoma85,000
ABS and brake lights on randomly with no effect on brake system. Diagnosis revealed nothing. Recently, low speed braking triggers ABS. Nothing done yet, may have to clean sensors myself.
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