2008 GMC Yukon Hybrid

LOSS OF BRAKE PRESSURE, PEDAL WENT ALMOST TO FLOOR. BRAKE WARNING ANNUNCIATOR STABILITRAK CAUTION ANNUNCIATOR SERVICE BRAKES SOON MESSAGE ON DIC STABILITRAK FAILURE MESSAGE ON DIC DRIVING HOME FROM WORK, RADIO ON, AIR CONDITIONING ON, DRIVING FOR ABOUT 10-15 MINUTES A GUY IN FRONT OF ME DOES A QUICK LANE CHANGE AND TURN IN FRONT OF ME. I HAVE TO STEP ON THE BRAKE HARD BUT NOT SUPER HARD. WHEN I DID THIS THE BRAKE PEDAL WENT FURTHER THAN NORMAL AND ALL OF THE ABOVE WARNING LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. A). I SLOWLY PULL INTO A PARKING LOT (2-3 MPH) AND THE PEDAL GOES ALMOST TO THE FLOOR. ALMOST CANNOT STOP. B). I SHUT OFF THE VEHICLE AND RESTART BUT THE LIGHTS COME ON AS SOON AS I PRESS ON THE BRAKE. I DO THIS SEVERAL MORE TIME, CHECK BRAKE FLUID RESERVOIR BUT THE SAME RESULTS. C). AFTER ABOUT THE 6 TIME RESTARTING, I HEAR A SMALL MOTOR RUNNING ( BRAKE ACCUMULATOR / MODULATOR ? ) AND THE PEDAL BEGINS TO GET FIRM AGAIN AND THE WARNING ANNUNCIATORS EXTINGUISHED. D). I CONTINUED DRIVING HOME SLOWLY WITH NO FURTHER FAULTS. DIDN'T THINK OF CHECKING THE VOLTAGE UNTIL EVERYTHING WAS GOOD, AT THAT POINT IT WAS INDICATING 15VDC. THIS PROBLEM HAS OCCURRED INTERMITTENTLY MANY TIMES SINCE THEN. HAVE TAKEN TO KEEPING ONE FOOT ON EMERGENCY BRAKE. THE DEALERSHIP REPLACED BRAKE MASTER CYLINDER BUT THIS DID NOT FIX PROBLEM. DEALER ORDERED THE ELECTRIC PUMP (BRAKE MODULATOR) AND TWO WEEKS LATER DEALERSHIP STATES GM CANNOT LOCATE ANY PARTS TO REPAIR THE VEHICLE. PART REMAINS ON ORDER. VEHICLE NOT OPERABLE WITHOUT BRAKES. *TR

TL* THE CONTACT OWNS A 2008 GMC YUKON HYBRID. THE CONTACT STATED THAT WHILE DRIVING 65 MPH, THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION AND THEY STATED THAT THEY COULD NOT DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 15,000.

TL* THE CONTACT OWNS A 2008 GMC YUKON HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 10 MPH, THE POWER STEERING ASSIST FAILED WITHOUT WARNING AND THE STEERING WHEEL BECAME HARD TO TURN. THE FAILURE WAS RECURRING OVER A PERIOD OF ONE WEEK. THE VEHICLE WAS TAKEN TO THE DEALER, WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE VIN WAS UNAVAILABLE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 86,500. ...UPDATED 05-13-14 *BF

75% OF THE ELECTRIC DOOR LOCKS ON THE ABOVE DESCRIBED GMC YUKON, INCLUDING BOTH REAR DOOR LOCKS HAVE FAILED IN THE LOCKED POSITION. THIS FAILURE MAKES IT DIFFICULT/IMPOSSIBLE TO OPEN THE DOORS - ESPECIALLY THE REAR DOORS. BECAUSE THE CAR HAS ONLY ONE EXTERIOR DOOR LOCK; IN ORDER TO OPEN THE INTERIOR MANUAL REAR DOOR LATCHES IN AN EMERGENCY, ONE MUST TRY TO CLIMB OVER/BETWEEN THE FRONT SEATS (THE HEAD RESTS ARE NO LONGER REMOVABLE) - A STRETCH OF 4'4" FROM THE EDGE OF THE FRONT SEAT TO THE LATCH WHICH IS LOCATED AT THE REAR OF THE REAR DOOR. SHOULD ONE ATTEMPT TO ACCESS THESE LOCKS THROUGH THE REAR TAILGATE, IT IS A LONG REACH OF 6' 6" OVER THE THIRD ROW SEATS. IN AN EMERGENCY SITUATION, THE ABOVE DESCRIBED FAILURE, CAN EASILY TRAP INFANTS AND CHILDREN IN THE BACK OF THE CAR, CREATING AN A SERIOUS HEALTH AND SAFETY PROBLEM. *TR

TL* THE CONTACT OWNS A 2008 GMC YUKON DENALI HYBRID. THE CONTACT STATED THAT WHILE DRIVING 15 MPH, HE APPLIED THE BRAKES BUT NOTICED THAT THE VEHICLE HAD INDEPENDENTLY CONVERTED FROM THE GASOLINE MODE TO ELECTRICAL HYBRID MODE. THE VEHICLE THEN STALLED BUT REGAINED POWER ONCE THE VEHICLE WAS AT A COMPLETE STOP. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION BUT THEY COULD NOT DIAGNOSE THE CAUSE OF FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 40,000.

I HAVE HAD REPEATED FAILURES OF ALL THE DOOR LOCKS IN MY YUKON. THEY WILL ONLY WORK MANUALLY NOT WITH THE AUTO LOCK FEATURE. SAFETY IS A CONCERN AS YOU NEED TO REMEMBER TO LOCK THE DOOR MANUALLY AND THEN UNLOCK IT MANUALLY TO GET IN THE CAR. THE AUTO DOOR LOCK FEATURE (LOCKING AT 5 MPH OR ABOVE) ALSO DOES NOT WORK INVITING A CAR JACKING INCIDENT. I HAVE HAD 3 REPLACED UNDER WARRANTY AND NOW A 4TH DOOR IS AFFECTED. *JS

2008 GMC YUKON DOOR ACTUATORS GOING OUT REPETITIVELY. I HAVE TO HAVE TWO ACTUATORS REPLACED AT ABOUT $400 EACH FOR NEARLY $800. TWO FAILURES OUT OF FOUR ACTUATORS IS AA TOTALLY UNACCEPTABLE FAILURE RATE. THIS IS A SERIOUS DEFECT. THE FACT THAT THE MANUAL UNLATCH IS UN REACHABLE MAKES THIS ISSUE EVEN MORE OUTRAGEOUS. MANUALLY UNLOCKING THE DOOR INSTEAD OF BEING ABLE TO USE MY KEY REMOTE IS NOT EASY. ONE NEEDS TO CRAWL IN THE BACK SEAT TO UNLATCH THE BACK DOOR. THIS NEED SERIOUS ATTENTION! THIS IS A PAIN AND CAUSES ME TO SERIOUSLY CONSIDER BUYING A DIFFERENT BRAND. DO WHAT YOU WISH GM. YOUR LOSS DOWN THE ROAD AS I WILL TELL AS MANY AS I CAN TO FIND ANOTHER VEHICLE TO BUY. *TR

VEHICLE BRAKE SYSTEM RESPONDS ERRATICALLY ABOUT ONCE EVERY 100 MILES. IT HAS CAUSED NUMEROUS NEAR MISS ACCIDENTS. THIS PROBLEM HAS HAPPENED ON NUMEROUS OCCASIONS BUT I'LL DESCRIBE THE MOST RECENT. I WAS DRIVING DOWN A LOCAL HIGHWAY AT ABOUT 50 MILES AN HOUR. TRAFFIC WAS BACKING UP AND CAME TO A STOP. I HIT THE BRAKES (NO DANGER/EMERGENCY, JUST A NORMAL STOP). THE VEHICLE SLOWED NORMALLY TO ABOUT 15 MILES PER HOUR AND THEN THE BRAKES "LET GO" AND THE DECELERATION STOPPED EVEN THOUGH MY FOOT WAS STILL ON THE BRAKE PEDAL. I HAD TO RELEASE THE PEDAL AND SLAM ON THE BRAKES ANEW TO GET THE VEHICLE TO STOP BEFORE SLAMMING IN TO THE TRAFFIC IN FRONT OF ME. THIS HAS HAPPENED SEVERAL TIMES SINCE AND IT SEEMS TO OCCUR WHEN THE VEHICLE IS SWITCHING FROM HYBRID TO NON-HYBRID MODE AND/OR WHEN THE REGENERATIVE BRAKING IS CYCLING ON OR OFF. MY VEHICLE IS A 2008 GMC YUKON HYBRID IT'S BEEN TAKEN TO THE DEALER AT LEAST TWICE FOR THIS PROBLEM BUT NOTHING HAS BEEN REPAIRED. I CAN'T RECREATED THE PROBLEM ON DEMAND, BUT IT HAPPENS ON AVERAGE ONCE A WEEK AND SCARES ME SO MUCH THAT I DON'T FEEL SAFE DRIVING IT ANYMORE. IT'S JUST A MATTER OF TIME BEFORE THERE IS A SERIOUS ACCIDENT. *TR