There are 50 owner-reported brakes complaints for the 2006 GMC Sierrain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
BRAKES FAILED "COMPLETELY", WITH NO WARNING. NO "WARNING LIGHT" ON THE INSTRUMENT PANEL WHILE DRIVING ON A PUBLIC ROAD IN THE COUNTY. ALL OF A SUDDEN ABSOLUTELY NO BRAKES. HAD RECENTLY HAULED A CAR ON A TRAILER FROM EMPORIA, KANSAS. WAS PREPARING TO HAUL CALVES TO THE SALE BARN. NOW THAT WOULD HAVE BEEN A TOTAL DISASTER. UPON INSPECTION, THE BRAKE LINES ARE SO RUSTED, THAT PINCHING OFF THE LINE RESULTED IN A RUPTURE IN ANOTHER LOCATION. I WAS TRYING TO GET SOME BRAKING ACTION, SO I COULD DRIVE IT TO A REPAIR SHOP. I'LL HAVE TO HAUL IT. *TR
EVEN THOUGH MY TRUCK HAS ALWAYS BEEN GARAGE KEPT AND ONLY HAS 30 THOUSAND MILES ON IT, MY BRAKING SYSTEM WENT OUT WHILE DRIVING BECAUSE MY METAL BRAKE LINES ARE RUSTED . *TR
BRAKE LINES BUSTED. THIS IS A VERY SERIOUS PROBLEM BECAUSE I WAS HAULING A LOAD AND GOT EXTREMELY EXTREMELY LUCKY THAT IT BUSTED AS I WAS PULLING IN DRIVEWAY. I WAS PULLING A LOADED TRAILER WITH NO BRAKES. THIS IS A VERY COMMON ISSUE WITH THE 2005 AND 2006 2500 TRUCKS. I CAN NAME 6 VEHICLES I KNOW OF IN THE PAST 6 MONTHS THAT THIS HAS HAPPENED TOO. MECHANIC SAYS IT'S A VERY SERIOUS AND COMMON ISSUE THAT GM SHOULD BE RECALLING. IF I WOULD HAVE BEEN AT A STOPLIGHT IT WOULD HAVE BEEN BAD. CHEAP MATERIALS IS THE PROBLEM WITH THESE BRAKE LINES. 2006 YEAR MODEL IS MINE.
ABS LIGHT KEEPS COMING ON WHILE DRIVING
WHILE DRIVING AT LOW SPEEDS, ABOUT 20 MPH OR LOWER, THE BRAKE PEDAL FADES TO THE FLOOR. THERE ARE NO LIGHTS OR CODES AND BRAKE FLUID AT THE PROPER LEVEL. THIS HAPPENS QUITE FREQUENTLY AND ANYWHERE.
TL* THE CONTACT OWNS A 2006 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 8 MPH AND ATTEMPTING TO STOP THE VEHICLE, THE ANTI-LOCK BRAKING SYSTEM SEIZED WITHOUT WARNING. THE FAILURE RECURRED SEVERAL TIMES. THE CONTACT CALLED CHAMPION CHEVROLET OF AVON AT 317-350-1023 (LOCATED AT 183 S COUNTY RD 525, AVON, IN 46123) AND A DIAGNOSTIC TEST WAS RECOMMENDED. THE TEST WAS NOT PERFORMED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 36,000.
IN THE CITY STOPPING FOR A STOPLIGHT THE BRAKES FAILED. THE VEHICLE LUCKILY WAS ABLE TO TURN INTO A PARKING LOT. ALL FLUID WAS LOST BECAUSE THE BRAKE LINES FAILED DUE TO RUST. NO BRAKES WHATSOEVER EXCEPT EMERGENCY BRAKE. MY STATE EVEN REQUIRES A SAFETY INSPECTION YEARLY. IF THE CONSUMER IS NOT GOING TO BE NOTIFIED OF THIS SERIOUS PROBLEM AT LEAST LET THE SAFETY INSPECTORS KNOW.
I TOOK OUR TRUCK IN FOR SERVICING AT THE O'NEILL GMC DEALERSHIP IN WARMINSTER, PA AND WAS TOLD THAT ALL OF OUR BRAKE LINES NEEDED TO BE REPLACED DUE TO RUSTING. WE PURCHASED OUR VEHICLE NEW FROM O'NEILL AND HAVE CONTINUED TO HAVE IT SERVICED THERE. THE TRUCK IS TREATED WITH GREAT RESPECT AND ONLY HAS 40,000 MILES ON IT. I CONTACTED GMC DUE TO THE DEFECTIVE MATERIALS OF THE VEHICLE THEY SOLD US AND THEY CLAIM THAT THIS IS NORMAL. I NOW AM STRAPPED WITH A BILL FOR $2700.00 TO REPLACE ALL FOUR DEFECTIVE, RUSTING BRAKE LINES THEIR WEBSITE SAYS CUSTOMER SATISFACTION GUARANTEED. I BELIEVE GMC SHOULD CONTRIBUTE $1700 TOWARDS THE BILL. I NOTE THAT THERE ARE OVER TEN PAGES OF COMPLAINTS ON THE INTERNET REGARDING CORROSION PROBLEMS. PLEASE HOLD GMC ACCOUNTABLE. THIS VEHICLE WAS PURCHASED IN GOOD FAITH AND THEY SHOULD ADMIT RESPONSIBILITY FOR THEIR INFERIOR BRAKE LINE MATERIALS. I AM DISAPPOINTED WITH GMC'S EXCUSES AND NONSENSE. I TOLD THEM THEY SHOULD PAY $1700 OUT OF THE MONEY THEY BANKED FROM THE EXPIRED, EXTENDED WARRANTY WE PURCHASED. THIS IS A GMC ISSUE; NOT A [XXX] ISSUE. AGAIN, PLEASE HOLD THEM RESPONSIBLE FOR SELLING A DEFECTIVE TRUCK. THANK YOU, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
BRAKE LINE FAILURE, FRONT LEFT. STEEL LINE HAD RUSTED NEXT TO A PLASTIC CLIP THAT SECURED A WIRING HARNESS TO THE BRAKE LINE. BRAKE FLUID WAS SPRAYING ONTO THE SIDE OF THE ENGINE. NOTICED THE LEAK AFTER RETURNING HOME; HAD FAILED IN STOP-AND-GO TRAFFIC.
WHEN BRAKING AT THE END OF OUR DRIVEWAY BEFORE PROCEEDING INTO THE ROAD THE BRAKE PEDAL PULSATES LIKE ABS IS KICKING IN BUT THE VEHICLE HESITATES TO STOP. ALSO WHEN TURNING TO THE LEFT AT LOW SPEED, CAN HEAR THE ABS SYSTEM ACTIVATING AND GET PULSING IN THE BRAKES AS WELL.
WHILE DRIVING ON TWO LANE ROAD,SERVICE BRAKE SYSTEM LIGHT FLASHED, VEHICLE WAS HARD TOO SLOW DOWN AND STOP. STOPPED VEHICLE AND SAW BRAKE FLUID WAS LEAKING FROM LEFT FRONT WHEEL BRAKE LINES.
I OWN A 2006 GMC SIERRA 1500 PICK-UP WITH LESS THAN 75,000 MILES ON JANUARY 23, 2017 I LOST MY BRAKING CAPABILITY DUE TO THE BRAKE LINES BEING COMPLETELY CORRODED/RUSTED THROUGH CAUSING THE LOST OF BRAKE FLUID. LUCKILY I LOST MY BRAKES IN A PARKING LOT AND NOT ON A BUSY MAIN STREET OR HIGHWAY WITH THE POSSIBILITY OF HAVING AN ACCIDENT AND SERIOUSLY HURTING MYSELF OR SOMEONE ELSE. FROM WHAT I HAVE READ GM HAS KNOWN ABOUT THIS PROBLEM FOR SOMETIME AND SAYS IT IS NOT A SAFETY CONCERN. FROM FIRST HAND EXPERIENCE I BELIEVE THIS IS A MAJOR SAFETY CONCERN. *TR
TOTAL BRAKE FAILURE WHILE TRYING TO STOP ON A RESIDENTIAL STREET. VEHICLE TOWED TO DEALERSHIP & WAS TOLD BRAKES HAD RUSTED OUT. COST OF REPAIRS WAS AROUND $2000.00
TL* THE CONTACT OWNS A 2006 GMC SIERRA 1500. WHILE DRIVING AT A VERY SLOW SPEED, THE BRAKE PEDAL DEPRESSED AND FAILED TO OPERATE. THE CONTACT WAS UNAWARE IF THE EMERGENCY BRAKE WAS DEPRESSED; HOWEVER, THERE WAS NO CRASH. THE VEHICLE WAS TOWED TO A DEALER WHERE IT WAS DIAGNOSED THAT THE BRAKE LINE WAS RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 83,000.
TOTAL BRAKE FAILURE WHILE IN MOTION. CORRODED BRAKE LINE RUPTURED CAUSING IMMEDIATE LOSS OF ALL FLUID. HAD THIS HAPPENED 5 MINUTES EARLIER, I WOULD HAVE BEEN ON A FOUR LANE HIGHWAY IN BUMPER TO BUMPER CHRISTMAS TRAFFIC. AT 70 YEARS OLD I CAN ONLY IMAGINE HOW CATASTROPHIC AN ACCIDENT MY REFLEXES WOULD HAVE GENERATED. THE FLUID SPRAYED ON THE HOT ENGINE CREATING A CLOUD OF SMOKE. I WAS AFRAID THE TRUCK WAS ON FIRE. THE FLUID COOKED OFF THE ENGINE AS SMOKE AND AGAIN LUCKILY THERE WAS NO FIRE. NOW AFTER EXTENSIVE REPAIRS, I AM VERY NERVOUS BEHIND THE WHEEL OF THIS VEHICLE. THIS VERY DANGEROUS SITUATION WITH CORROSION SHOULD BE ADDRESSED AS BLOGS ON THE INTERNET INDICATE THIS DANGEROUS ISSUE HAS BEEN ONGOING FOR QUITE AWHILE. I HAVE ATTACHED THE INVOICE OF THE REPAIRS REQUIRED. I WAS IN THE DRIVE THROUGH OF A MCDONALDS AND HAD PLACED MY ORDER AND WAS PULLING TO THE WINDOW TO PAY WHEN THE BRAKES FAILED. LUCKILY I WAS ONLY MOVING SLOWLY AT THAT TIME, THUS ABLE TO AVOID INJURING ANYONE OR DAMAGING ANY OTHER VEHICLES.
ABS ACTIVATION AT LOW SPEEDS RESULTING IN INCREASE STOPPING DISTANCE. IT RESULTED ALMOST STRIKING A PEDESTRIAN IN A CROSSWALK. THIS HAD PREVIOUSLY BEEN REPAIRED AT MY OWN COST IN 2011 AND THE PROBLEM HAS AGAIN RETURNED. PREVIOUSLY GMC SIERRAS WERE RECALLED WITH THE SAME PROBLEM. RECALL NUMBER: 05V379000 RECALL DATE: 08/29/2005 COMPONENT: SERVICE BRAKES, HYDRAULIC:ANTILOCK PROBLEM SUMMARY: CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. CONSEQUENCE: THIS CAN CAUSE INCREASED STOPPING DISTANCES DURING LOW-SPEED BRAKE APPLICATIONS, WHICH COULD RESULT IN A CRASH.
VEHICLE IN MOTION. BRAKE LINE FAILURE (BURST) WHILE DRIVING ON CROWDED CITY STREET - 30MPH. PEDAL SANK TO FLOOR. TOTAL LOSS OF BRAKES. USED EMERGENCY BRAKE AND GEAR IN PARK TO STOP. NEAR COLLISION WITH BICYCLIST.
PULLING OUT OF DRIVEWAY AND BRAKES GAVE OUT.. STEPPED ON THE BRAKES AND TRUCK DID NOT STOP. A RUSTY BRAKE LINE WAS LEAKING. IT IT HAD A SPLIT IN IT. DO TO RUST ANAND CORROSION. THIS SAME THING HAS HAPPENED TO MY FATHER'S 03 SILVERADO A FEW YEARS BACK. WHY HAS THIS BEEN AN ISSUE WITH NO RECALL. I HAD A KIA SPECTRA FOR 15 YEARS AND NEVER HAD PROBLEMS WITH RUSTY BRAKE LINES LEAKING... IT'S A TRUCK THEY SHOULD BE BUILT TO LAST.. SMH NOT HAPPY..
BRAKE LINE TO REAR BRAKES RUSTED OUT.
RIGHT FRONT BRAKE LINE RUPTURED WHEN APPLYING BRAKES IN A PARKING LOT. BRAKE FLUID STARTED TO LEAK OUT FROM THE LINE THAT CROSSES FROM THE DRIVER'S SIDE TO THE PASSENGER'S SIDE OF THE VEHICLE. IT APPEARS THE RUPTURE WAS DUE TO CORROSION OF THE ORIGINAL LINES.
Showing 1–20 of 50 complaints
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026