2004 GMC Yukon Brakes Problems

My vehicle is supposed to have a sensor wire for a break master cylinder and it doesn’t

NHTSA ID

11674854

Incident

Jul 20, 2025

My kids and I was on the interstate and all of sudden my yukon reduce engine power.Dropping to 30 in a speed zone of 70.I was very afraid for our safety and appreciate there concerns for reducing engine power to save the truck,but that's very dangerous. So I paid to replace the throttle body and gas pedal cause that was the codes for the problem. But it's still doing the same thing and I don't have money to keep buying parts.Plus it a gm problem and I really need some help with the fixture..

NHTSA ID

11419417

Incident

May 31, 2021

TL* THE CONTACT OWNS A 2004 GMC YUKON. THE CONTACT STATED THE VEHICLE DOES NOT STOP WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT WAS DRIVING ABOUT 45 MPH. THE VEHICLE WAS TAKEN TO SEARS (3655 SW 22ND ST, CORAL GABLES, FL 33145. MIAMI, FLORIDA) WHERE THE VEHICLE WAS REPAIRED. THE FAILURE RECURRED AFTER THE VEHICLE WAS REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS UNKNOWN.

NHTSA ID

11307318

Incident

Aug 17, 2018

TL* THE CONTACT OWNS A 2004 GMC YUKON. THE CONTACT STATED THAT THE ABS WARNING INDICATOR ILLUMINATED INTERMITTENTLY. THE CONTACT TOOK THE VEHICLE TO A CERTIFIED MECHANIC WHO DIAGNOSED THAT THE BRAKE PADS NEEDED REPLACING, THE DRUMS NEEDED TO BE ROTATED, AND NEW BRAKE LINES WERE NEEDED. THE VEHICLE WAS REPAIRED. SHORTLY AFTER THE REPAIRS, WHEN THE CONTACT BEGAN TO DRIVE THE VEHICLE, THE ABS WARNING INDICATOR ILLUMINATED INTERMITTENTLY. THE CONTACT TOOK THE VEHICLE TO EXCEL CHEVROLET (LOCATED AT 1765 US HIGHWAY 59 S, JEFFERSON, TX 75657), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 160,000.

NHTSA ID

11270387

Incident

Sep 1, 2019

Mileage

160,000 mi

TL* THE CONTACT OWNS A 2004 GMC YUKON. WHILE DRIVING AT A MODERATE RATE OF SPEED, THE BRAKE LINE FAILED WITHOUT WARNING. THE CONTACT HAD THE VEHICLE TOWED TO AN INDEPENDENT MECHANIC WHO DETERMINED THAT A BRAKE LINE HAD BURST AND THAT ANOTHER BRAKE LINE WAS ON THE VERGE OF BURSTING. THE VEHICLE WAS TOWED TO FOUR SEASONS FORD (601 DUNCAN HILL RD, HENDERSONVILLE, NC 28792, (828) 693-4281) WHERE THEY INFORMED THE CONTACT THAT THEY WOULD ONLY GIVE HIM HALF THE MONEY HE PUT DOWN FOR THE VEHICLE OR PROVIDE HIM WITH ANOTHER VEHICLE OF THE SAME VALUE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE AND VIN WERE UNKNOWN.

NHTSA ID

11270040

Incident

Sep 21, 2019

RUSTED BRAKE LINES (BOTH) RUSTED AND FAILED AT A CRITICAL TIME PUTTING MOTORIST IN DANGEROUS SITUATION AT TIME OF FAILURE. EXITING HIGHWAY AT POSTED SPEED WITH FEW OPTIONS ON HOW TO STOP VEHICLE.

NHTSA ID

11254858

Incident

Aug 21, 2019

Mileage

150,000 mi

TRYING TO STOP SLOWLY AND ABS SYSTEM MOVE MY YUKON TO A POINT I ALMOST HIT THE CAR IN FRONT OF ME. IT HAPPENS WHEN I TRY TO STOP UNDER 10 MILES PER HOUR. ALSO 2WD DRIVE DROPS TO 4WD ON HIGHWAY AND LOSE POWER. THIS IS DANGEROUS ON THE HIGHWAY.

NHTSA ID

11162614

Incident

Dec 19, 2018

Mileage

167,000 mi

WHILE TRAVELING AT HIGHWAY SPEED AND ROUNDING A BLIND CURVE THE TRAFFIC AHEAD HAD STOPPED DUE TO A CRASH. I HAD TO BRAKE HARDER THAN NORMAL AND THE BRAKE PEDAL JUST KEPT DEPRESSING FURTHER AND FURTHER UNTIL IT WAS ALL THE WAY TO THE FLOOR. I WASN'T STOPPING NEAR FAST ENOUGH AND HAD TO VEER TO THE LEFT INTO THE MEDIAN TO AVOID MAKING CONTACT WITH ANYONE ELSE. IT WAS RAINING AND AS I LOOKED UNDER MY TRUCK TO LOOK FOR WHY MY BRAKES WERE INEFFECTIVE BUT COULDN'T SEE ANYTHING AT THAT TIME. I CHOSE TO TRY TO DRIVE HOME NOT SURE WHY I HAD THE PROBLEM STOPPING. THE NEXT DAY WAS DRY AND I HAD MY BROTHER PUMP THE BRAKES WHILE I LOOK UNDERNEATH AND FOUND NUMEROUS PLACES WHERE THE BRAKE LINES WERE RUSTING AT AN ALARMING RATE AND ONE LOCATION WHERE THE RUSTED LINE FAILED. I REPAIRED THE LEAK I HAD FOUND AND WHEN I TRIED TO BLEED THE BRAKES FROM THAT REPAIR I WOULD BEGIN AN UNENDING RUN OF LEAKS UP AND DOWN THE METAL BRAKE LINES FOR BOTH THE FRONT AND REAR. THIS YUKON HAS AROUND 260K MILES BUT THOSE BRAKE LINES SHOULDN'T BE RUSTING THROUGH LIKE THEY ARE. I HAVE HAD MORE THAN 15 TAHOES, YUKONS, YUKON XLS, SUBURBANS, AND PICKUP TRUCKS FROM GM AND NEVER HAVE I HAD SUCH A RUN OF BRAKE FAILURES AS THIS 2004 MODEL YUKON WAS NOW GOING THROUGH. GM SAYS THIS IS NORMAL MAINTENANCE BUT HOW CAN ONE EVEN SEE IF A FAILURE IS OCCURRING AS MANY OF THESE LINES ARE CONCEALED BY THE FRAME, CHASSIS, AND BODY. I HAVE SPOKEN TO OTHER OWNERS OF SIMILAR VEHICLES, BE IT PICKUPS OR TAHOE'S OR SUBURBANS OF THE 2000 TO 2006 MODEL YEARS AND NEARLY ALL HAVE COMPLAINED OF CHRONIC BODY RUST ISSUES BUT MORE IMPORTANTLY BRAKE FAILURES FROM BRAKE LINES RUSTING AND THEN BLOWING OUT WITHOUT WARNING. MANY ALSO CITED THAT OF THE LINES THAT ARE VISIBLE TO INSPECT THEY WOULD APPEAR TO BE OK BUT JUST OUT OF VIEW ONE WOULD HAVE A SUDDEN BLOW OUT WITH NO WAY TO SEE OR KNOW THERE WAS A PROBLEM SINCE THE LINES ARE CONCEALED.

NHTSA ID

11098376

Incident

Oct 13, 2017

Mileage

260,000 mi

TL* THE CONTACT OWNS A 2004 GMC YUKON. THE CONTACT STATED THAT THE SERVICE BRAKE BOOSTER WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO BROWN AUTOMOTIVE CENTER (2520 VETERANS BLVD, DEL RIO, TX) AND THE CONTACT WAS INFORMED THAT NHTSA CAMPAIGN NUMBER: 05V043000 (SERVICE BRAKES, HYDRAULIC) HAD PREVIOUSLY BEEN PERFORMED AND ANY MORE REPAIRS WOULD BE AT THE CONTACT'S EXPENSE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE VEHICLE DID NOT HAVE THE SAME KIND OF BRAKING ASSEMBLY AS LISTED IN THE RECALL. THE MANUFACTURER WAS CONTACTED REGARDING THE ISSUE AND THE CASE WAS ESCALATED SEVERAL TIMES, BUT NO FURTHER ACTION WAS TAKEN. THE FAILURE MILEAGE WAS APPROXIMATELY 247,118. *TT CONSUMER STATED GM CHARGED TO REPAIR UPDATED 8/14/18*JB

NHTSA ID

11053512

Incident

Nov 24, 2017

Mileage

247,118 mi

TL* THE CONTACT OWNS A 2004 GMC YUKON. WHILE MOVING FROM THE PARK POSITION, THE BRAKE SYSTEM DISABLE WARNING INDICATOR ILLUMINATED. THE BRAKE PEDAL WAS DEPRESSED, BUT FAILED TO OPERATE. THE EMERGENCY BRAKES ALSO FAILED TO OPERATE. THE CONTACT STATED THAT THERE WAS BRAKE FLUID EVIDENT UNDER THE FRONT OF THE VEHICLE. THE CONTACT ALSO STATED THAT THE BRAKE LINE WAS EXTREMELY CORRODED. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 04V045000 (SERVICE BRAKES, HYDRAULIC). THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 152,000.

NHTSA ID

10903745

Incident

Sep 5, 2016

Mileage

152,000 mi

WHILE DRIVING DOWN ROAD AT APPROXIMATELY 45 MPH, HIT THE BRAKES WHEN A COUPLE OF DEER JUMPED ONTO ROAD AND THE PEDAL WENT TO FLOOR WITH NO BRAKING ACTION AT ALL. HAD ENOUGH TIME TO REALIZE WHAT HAD HAPPENED AND HIT THE PARKING BRAKE IN TIME BEFORE REACHING INTERSECTION TO BUSY HIGHWAY. INSPECTION AFTERWARD SHOWED BRAKE FLUID ON THE FRAME NEAR THE DRIVER SIDE DOOR WHERE THE PROPORTIONING VALVE IS LOCATED. THERE WAS NO WARNING OF THE FAILURE AND HAD BEEN DRIVING THE VEHICLE AROUND TOWN MOST OF THE DAY. HAVE EXPERIENCED BRAKE FAILURES ON VEHICLES BEFORE AND ALWAYS HAD HALF THE SYSTEM REMAIN OPERATIONAL ENOUGH TO STOP WITHOUT PROBLEM. THIS APPEARS TO HAVE BEEN A SINGLE FAILURE MODE THAT CAUSED THE LOSS OF BRAKING OR A SIMULTANEOUS FAILURE OF MULTIPLE SYSTEMS WHICH SHOULD BE UNLIKELY BUT SEEMS TO HAPPEN WITH IMPROBABLE REGULARITY BASED ON COMPLAINTS POSTED.

NHTSA ID

10895717

Incident

Aug 12, 2016

Mileage

172,000 mi

BRAKE LINES RUSTED IN TO CAUSING THE LINES TO WEAKEN. DRIVING TO MY HOUSE , PUSH ON BRAKE PEDAL IT WENT TO THE FLOOR LOOK UNDER VEHICLE AND THERE WAS A POOL OF BRAKE FLUID UNDER THE VEHICLE. THIS COULD HAVE BEEN A SERIOUS ACCIDENT IN TRAFFIC.

NHTSA ID

10758665

Incident

Aug 14, 2015

Mileage

218,920 mi

WHILE DRIVING DOWN AN ON RAMP I BEGAN TO APPLY THE BRAKES TO SLOW DOWN, THE BRAKE PEDAL SUNK TO THE FLOOR AND I HAD NO BRAKING CAPABILITY AND THE BRAKE WARNING APPEARED ON THE DASH. I PUMPED THE BRAKE AGAIN AND STILL HAD NO BRAKING CAPABILITY, I WAS ABLE TO COAST TO A STOP ALONG THE SIDE OF THE ROAD. UPON INSPECTION OF THE BRAKE LINES, THERE WAS A MAJOR LEAK ON THE REAR DRIVER SIDE, AND A SMALLER LEAK FROM ON THE FRONT PASSENGER SIDE.

NHTSA ID

10732057

Incident

Jul 2, 2015

Mileage

181,000 mi

LOST ALL BRAKES WHEN COMING TO A STOP SIGN, ROLLED OUT INTO INTERSECTION, ON INSPECTION BRAKE FLUID WAS LEAKING OUT FROM UNDER DRIVERS SIDE FLOOR AREA. ALL BRAKE FLUID LEAKED OUT FROM RESERVOIR. *TR

NHTSA ID

10663564

Incident

Nov 28, 2013

Mileage

95,000 mi

BACKING UP TO HOOK UP A TRAILER, I DEPRESSED THE BRAKE AND IT WENT STRAIGHT TO THE FLOOR. REAR BRAKE LINE RUPTURED AFTER ABS MODULE AND RIGHT ABOUT THE FUEL TANK. I CANNOT REPLACE JUST THEY ONE LINE BECAUSE OF CORROSION AND RUST AT THE MODULE. THIS IS THE FAMILY SUV AND IM LUCKY THIS HAPPENED IN MY YARD AND NOT ON THE HIGHWAY. I WAS PREPARING TO LEAVE TOWING A 5500LB TRAILER. ALL THESE OTHER LINES ARE EQUALLY BAD AND I FEAR THEY ARE GOING TO RUPTURE TOO. I'M STUCK WITH A 10 YEAR OLD LESS THAN SAFE VEHICLE. *TR

NHTSA ID

10638817

Incident

Sep 24, 2014

Mileage

156,000 mi

I WAS HEADING TO OCEAN CITY MARYLAND. AS I WAS APPROACHING THE TOLL PLAZA TO GO OVER THE BAY BRIDGE I SLOWED DOWN AND SEEM TO HAD STOPPED WHEN ALL THE SUDDEN MY FOOT WAS ON THE BRAKE CLEAR TO THE FLOOR AND I HIT THE BOX TRUCK IN FRONT OF ME THAT WAS STOPPED FOR TRAFFIC. I LOOKED AT THE DASH AND IT WAS ALL LIT UP AND BLINKING. THE GENTLEMAN TOLD ME I HAD LOST MY BREAKS AND THAT WHEN HE WOULD MOVE I WOULD BEGIN TO MOVE AS WELL. I WAS NOT FAR FROM THE BEGINNING OF THE BRIDGE BUT I WAS SIX OR SEVEN LANES TO THE LEFT IN THE EASYPASS LANE. I CALLED MY BROTHER ASKING HIM WHAT TO DO AND HE TALKED ME THROUGH AS I WAS PANICKING. I HAD A FULL TANK OF GAS AND LOTS OF TRACTOR TRAILERS GOING THROUGH THE PLAZA. I WAS FOR SURE I WAS GOING TO BE HIT OR HIT SOMEONE ELSE. I ROLLED DOWN MY WINDOWS PUT MY FLASHERS ON AND BEGAN TO BLOW MY HORN AND YELLING OUT THE WINDOW I HAVE NO BRAKES SO THAT I COULD GET OVER TO THE RIGHT SIDE OF THE ROAD RIGHT BEFORE THE BRIDGE. AS I DID PEOPLE DID STOP AND LET ME GET OVER AND I HAD MY FOOT ON THE BRAKE BUT THEY WERE NOT STOPPING THE TRUCK. AS I WAS DRIFTING OVER A TOLL FACILITY TOW TRUCK WAS ON THE SIDE AND HE YELLED TO ME WHAT WAS WRONG. I TOLD HIM NO BRAKES AND HE TOLD ME TO JUMP OUT AND HE JUMPED IN AND HIT THE TRUCK UP OVER A SMALL EMBANKMENT TO GET IT OUT OF THE WAY OF ALL THE TRAFFIC. HE GOT IT TO STOP AND GOT OUT AND LOOKED UP UNDER THE TRUCK AND COULD SEE THAT TWO OF THE BRAKE LINES WERE SNAPPED. I HAD THE TRUCK TOWED WITH OVER THE BAY BRIDGE AND THEY HAD TO REPLACE THE TWO BRAKE LINES THAT SNAPPED AND THEY COULD NOT BLEED THE LINES FULLY SINCE THEY WERE AFRAID THAT THE OTHER TWO LINES COULD SNAP AT ANY TIME. I GOT HOME AND HAD TO HAVE THE OTHER TWO LINES DONE AS WELL. I HAVE TO SAY I WAS NEVER SO SCARED IN MY LIFE I COULD HAVE DIED FOR SURE IF I WAS GOING ANY FASTER UP AN OVER THE BRIDGE AND DOWN THE HILL GETTING OFF. WORST DAY OF MY LIFE. *TR

NHTSA ID

10609192

Incident

May 22, 2014

Mileage

134,455 mi

UPON APPLYING BRAKES, WHILE DRIVING DOWNHILL, THE RIGHT REAR STEEL BRAKE LINE BURST RESULTING IN SIGNIFICANT LOSS OF BRAKING POWER. FORTUNATELY,Y I HAD SIGNIFICANT DISTANCE BETWEEN ME AND THE NEXT CAR THAT I COULD AVOID AN ACCIDENT. THE VEHICLE STILL HAD SOME BRAKING POWER TO ALLOW ME TO DRIVE IT TO A NEARBY PARKING LOT WHERE IT CONTINUED TO LOSE BRAKE FLUID. THE VEHICLE WAS TOWED TO A LOCAL GMC DEALERSHIP WHERE THEY REPLACED ALL THE STEEL LINES WITH COPPER/NICKEL LINES AT A COST OF $1,606.00. I WAS TOLD THAT THE STEEL LINES ARE RUSTING OUT AS A RESULT OF THE DE-ICING CHEMICALS BEING USED ON THE ROADS DURING THE WINTER. I HAVE HAD VEHICLES UP TO 15 YEARS OLD IN THE PAST AND NEVER HAD SUCH AN EXPERIENCE AS THIS. I QUESTION THE QUALITY OF THE STEEL LINES. IF GM IS OF THE OPINION THAT THEIR STEEL LINES CAN'T WITHSTAND THE DE-ICING CHEMICALS THEN THEY SHOULD HAVE INSTALLED COPPER/NICKEL LINES AT THE FACTORY. THANK YOU. *JS

NHTSA ID

10608974

Incident

Jul 18, 2013

Mileage

39,393 mi

TL* THE CONTACT OWN A 2004 GMC YUCON- THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH, WHEN HE TRIED TO COME TO A STOP THE BRAKE PEDAL EXTENDED TO THE FLOOR. THE VEHICLE COULD ONLY BE STOPPED BY USING THE EMERGENCY BRAKE. THE VEHICLE WAS DRIVEN TO A NEARBY DEALER WHO INDICATED THAT THE BRAKE LINE NEEDED TO BE REPLACED BECAUSE OF CORROSION. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 78,271. *TR

NHTSA ID

10567756

Incident

Mar 5, 2014

Mileage

78,271 mi

I APPLIED THE BRAKES FIRMLY TO AVOID HITTING A DEER. ON MY NEXT BRAKE APPLICATION MY PEDAL WENT TO THE FLOOR AND THE SERVICE BRAKE SYSTEM MESSAGE CAME ON. WHEN I GOT HOME I FOUND A RUPTURED BRAKE LINE UNDERRATE DRIVERS DOOR. ALL LINES ARE RUSTED SEVERELY AS WELL AS MOST OF THE UNDERCARRIAGE. I LOOKED ONLINE AND THERE ARE HUNDREDS OF COMPLAINTS ON THIS ISSUE WITH GM VEHICLES SIMILAR TO MINE. *TR

NHTSA ID

10565476

Incident

Feb 22, 2014

Mileage

98,360 mi

NO PROBLEM YET, BUT IS SURE TO HAPPEN. BRAKE LINES RUSTED. HAD SAME PROBLEM ON MY 2005 GMC YUKON DENALI XL WHERE THE METAL LINES RUSTED AND BLEW OUT. ALMOST CAUSED ACCIDENT. *TR

NHTSA ID

10553591

Incident

Nov 24, 2013

Mileage

93,284 mi

CAR HAS LOW MILES FOR AGE AND TODAY THE BRAKE LINE BEGAN TO LEAK UNDER DRIVER SIDE SEAT BECAUSE OF RUST. *TR

NHTSA ID

10535243

Incident

Aug 13, 2013

Mileage

51,000 mi

I WAS TRAVELING ON THE NEW YORK STATE THRUWAY AT APPROXIMATELY 4:00PM, IN HEAVY TRAFFIC. TRAFFIC BEGAN TO SLOW AND BECOME BACKED UP, DUE TO CONGESTION IN A WORK ZONE. I APPLIED MY BRAKES, PUT THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR, AND I WAS UNABLE TO STOP. I AVOIDED COLLIDING WITH THE VEHICLE IN FRONT OF ME, BY MANEUVERING ONTO THE SHOULDER, AND HAD TO USE THE EMERGENCY BRAKES TO STOP. *TR

NHTSA ID

10534625

Incident

Aug 9, 2013

Mileage

83,198 mi

AS I WAS BACKING MY TRUCK OUT OF MY DRIVEWAY, I RELEASE THERE WAS NO BRAKE PRESSURE. THEN THE SERVICE BRAKE LIGHT CAME ON, I STOP THE CAR POPPED THE HOOD AND NOTICE THE FLUID WAS LOW. CHECK UNDER THE CAR AND FOUND THE LINE THAT GOES FRONT TO REAR IS BUSTED IN THE MIDDLE FROM RUST. I HAD TO USE MY PARKING BRAKE TO SLOW IT DOWN WHEN I MOVED IT BACK TO ITS SPACE. *TR

NHTSA ID

10524390

Incident

Jul 11, 2013

Mileage

168,000 mi

BRAKES WERE REDUCED TO ABOUT 10% OF NORMAL AND THE 'SERVICE BRAKES' LIGHT CAME ON. I HAD TO PUSH THE PEDAL ALL THE WAY DOWN TO THE FLOOR TO STOP. THE MECHANIC SAID ALL OF THE BRAKE LINES MUST BE REPLACED AS THEY ARE RUSTED, AND THAT THIS IS A TYPICAL PROBLEM WITH GMC TRUCKS OF THIS TYPE. *TR

NHTSA ID

10502118

Incident

Mar 1, 2013

Mileage

126,400 mi

I WAS HOOKING UP A DUMP TRAILER TO MY 2004 YUKON XL AND WHEN I WENT TO DO A TURN SIGNAL AND BRAKE LIGHT CHECK ON THE TRAILER, MY BRAKE PEDAL WENT TO THE FLOOR. NO WARNINGS OF ANY KIND. I AM EXTREMELY LUCKY THAT I WAS NOT MOVING AND HAD JUST COMPLETED DRIVING IN HIGH SPEED TRAFFIC FOR SEVERAL HUNDRED MILES. THE FAILURE WAS TOTAL AND IMMEDIATE. I DROVE THE VEHICLE TO A NEARBY SHOP WITH THE PARKING BRAKE. THE SHOP DIAGNOSED THE BRAKE FAILURE AS CORROSION IN BRAKE LINES AND FITTINGS. I JUST MOVED TO FLORIDA THIS YEAR, PREVIOUSLY THE VEHICLE HAD BEEN DRIVEN IN HEAVILY SALTED AND BRINED ROADS IN THE NORTHEAST. *TR

NHTSA ID

10478473

Incident

Sep 27, 2012

Mileage

81,000 mi