30 owner complaints to NHTSA about the 2000 GMC Sonoma cite service brakes, hydraulic, 22% of all 136 complaints for this model year. NHTSA also lists 2 recalls on this component.
“ABS SYSTEM MALFUNCTION. CODE C0265. INTERNET RESEARCH INDICATES THAT THIS MODEL YEAR (2000) AND OTHER SIMILAR MODELS AND SURROUNDING YEARS HAVE THIS FAILURE. GROUNDING FAILURE TO ABS COMPUTER MODULE RESULTING IN THE NECESSITY TO REPLACE MODULE. *TR”
“ABS & EMERGENCY DASH LIGHTS WILL TURN ON/OFF INTERMITTENLY; NO PATTERN AS TO WHEN/HOW OFTEN. HAD GM DEALER CHECK IT. MY EBCM HAD A SHORT, IF LIGHTS WERE ON, HAD NO ABS, JUST HYDRAULIC IF LIGHTS WERE OFF. I HAVE ABS. COST OF NEW MODULE IS $1100.00; PLUS LABOR!! DEALER SUGGESTED I LIVE WITH IT FOR COST OF REPAIR! I AGREED, BUT WORRIED THAT GM PROBABLY WERE IGNORING LIGHTS & THINKING THEY HAD GOOD ABS!!*AK”
“MY ABS LIGHT BEGAN TO COME ON WHILE DRIVING. I COULD HEAR THE ABS PUMP RUNNING BUT THE MODULE WAS NOT FUNCTIONING. I PULLED THE FUSE SO IT WOULD STOP RUNNING AND I COULD GET HOME. AFTER TAKING IT INTO AUTO SERVICE THEY DETERMINED IT NEEDS A ELECTRONIC BRAKE CONTROL MODULE AND HAS A KELSEY & HAYES ANTI-LOCK SYSTEM. THE WORK WAS QUOTED AT OVER $700. THEY SAID IT WOULD BE SAFE TO DRIVE BUT I HAVE LIMITED ANY DRIVING WITH THE TRUCK SINCE IT VALID. *NM”
“DT*: THE CONTACT STATED WHILE TRAVELING 35 MPH THE CONTACT DEPRESSED THE BRAKE PEDAL AND IT WENT TO THE FLOOR. AS AN ATTEMPT TO STOP THE VEHICLE THE CONTACT PUMPED THE BRAKES., RESULTING CONTACT IN A REAR END COLLISION. THIS INCIDENT OCCURRED ON WET ROAD CONDITIONS. THE VEHICLE WAS TOWED TO AN INDEPENDENT TOWING SERVICE. *AK”
“SHORTLY AFTER I PURCHASED MY 2000 GMC SONOMA [XXX] I HAD A "LOW SPEED ACTIVATION" OF THE ABS. SOME TIME LATER THE BRAKE WARNING LIGHT WAS ACTIVATED. I TOOK THE TRUCK TO A GMC DEALER AND WAS TOLD I HAD NO PROBLEMS, BUT THEY DID REPLACE THE BRAKE SHOES. EVER SINCE THEN THE LOW SPEED ACTIVATION WOULD HAPPEN PERIODICALLY. RECENTLY, THE PROBLEM HAS EVOLVED TO EVERY DAY. AND I BELIEVE THIS ROOT PROBLEM IS BEHIND A LOT OF OTHER BRAKE PROBLEMS I'VE HAD WITH THIS VEHICLE. *NM UPDATED 07/18/2012 *JS”
“WHEN TRAVELING AT HIGHWAY SPEEDS ABS LIGHT COMES ON, AND BRAKE LIGHT ON DASH BLINKS ALTHOUGH BRAKES ARE NOT BEING APPLIED. BRAKE LIGHT WILL STOP BLINKING IF VEHICLE IS SLOWED DOWN, BUT THE ABS LIGHT WILL STAY ON UNTIL KEY IS TAKEN FROM IGNITION. DEALER HAS SEEN VEHICLE 3-4 TIMES, AND CAN NOT FIX IT. *AK”
Showing 6 of 30 reports. Read every report on NHTSA.gov.
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS EQUIPPED WITH 4-WHEEL DISC BRAKES. SOME OF THESE VEHICLES HAVE AN ANTILOCK BRAKE SYSTEM (ABS) MOTOR CONTAINING AN OUT-OF-SPECIFICATION SPRING CLIP. THIS CLIP COULD ALLOW THE MOTOR BEARING TO BECOME MISALIGNED. IF MISALIGNMENT OCCURS, EVENTUALLY THE ABS WOULD BE NON-FUNCTIONAL.
VEHICLE DESCRIPTION: S -TRUCKS EQUIPPED WITH 2 WHEEL DRIVE. THESE VEHICLES MAY HAVE HAD THE RIGHT-HAND ANTILOCK BRAKE SYSTEM (ABS) MODULE FEED PIPE AND/OR BRAKE CROSSOVER PIPE TUBE NUTS TIGHTENED WITHOUT SEATING THE PIPE-FLARED-ENDS ENOUGH TO WITHSTAND NORMAL ASSEMBLY AND VEHICLE INPUTS WITHOUT PARTIALLY UNSEATING. THIS DOES NOT COMPLY WITH REQUIREMENTS OF FMVSS NO. 105, "HYDRAULIC SERVICE BRAKE NORMAL, EMERGENCY, AND PARK BRAKING PERFORMANCE."
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.