2009 Chevrolet Tahoe Hybrid

GM HAS NOT BEEN ABLE TO FIGURE OUT MY CAR. IT HAS BEEN IN THREE TIMES FOR AN ELTRICAL ISSUE. THE CAR REVS UP AND SPEEDS UP TO 55 MILES PER HOUR ON ITS OWN. HAS NO POWER STEERING. REDUCED ENGINE POWER. THROWING 47 CODES. NO COMMUNICATION BETWEEN TRANSMISSION AND COMPUTER. STABILITY TRACK TURNS OFF. DOORS AND AUTO SHUT OFF TURN OFF AND ON WHEN THIS OCCURS.

I REPORTED THIS SEVERAL TIMES TO CHEVROLET I WAS NOT HAPPY WITH THEIR RESEARCH. I AM HAVING ISSUES WITH THE BRAKES IN MY CAR. SOMETIMES WHILE BRAKING THE BRAKES WILL AUTOMATICALLY DISENGAGE AND YOU FEEL LIKE YOU ARE BEING THROWN FORWARD. I TOOK THIS TO SEVERAL CHEVY DEALERSHIPS WHILE MY CAR WAS UNDER WARRANTY AND THEY COULD NEVER FIND THE ISSUE. I AM STILL HAVING THE SAME PROBLEM AND SINCE MY WARRANTY EXPIRED THEY TOLD ME, I WOULD HAVE TO PAY FOR THE DIAG. I FEEL THAT SINCE I DID REPORT THIS WHILE IT WAS UNDER WARRANTY I SHOULD NOT HAVE TO PAY FOR MORE DIAG. I INITIALLY THOUGHT IT WAS JUST AN ISSUE WITH MY CAR, UNTIL A NEIGHBOR WITH THE SAME CAR ASKED IF I EXPERIENCED THE SAME ISSUES MY CHEVY CARES CASE NUMBERS : [XXX], [XXX] AND [XXX]; [XXX]*DT PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).*JB

MY 2009 HYBRID TAHOE ACCELERATES UNCONTROLLABLY ON OCCASION. THE ISSUE ARRISES COMMONLY IN STOP-AND-GO TRAFFIC WHEN THE HYBRID SYSTEM STARTS/STOPS THE GASOLINE ENGINE REGULARLY. I NOTICE IN MANY CIRCUMSTANCES WHEN SWITCHING GAS/ELECTRIC MODES THE VEHICLE LURCHES FORWARD. THE FEELING IS THE SAME AS LETTING OUT THE CLUTCH QUICKLY ON A VEHICLE WITH A MANUAL TRANSMISSION. I HAVE DONE AS MUCH RESEARCH AS I CAN AND IT APPEARS THE PROBLEM POINTS TO ISSUES WITH THE TRANSMISSION FLUID PUMP(S) AND/OR CONTROL MODULES. WHEN THE SYSTEM OPERATES ON THE GAS ENGINE, THE HYBRID TAHOE'S TRANSMISSION RELIES ON AN ENGINE DRIVEN HYDRAULIC FLUID PUMP. WHEN THE SYSTEM SWITCHES TO ELECTRIC MODE, AN AUXILIARY TRANSMISSION FLUID PUMP TURNS ON, DRIVEN BY AN INDEPENDENT ELECTRIC MOTOR. THE LURCH I DESCRIBED RESULTS FROM WHAT I BELIEVE TO BE A FAILING PUMP OR CONTROL MODULE, OR A COMBINATION OF THE BOTH WHICH ENGAGES GEARS WHEN IT SHOULDN'T. THIS LURCH IS RATHER DANGEROUS AS I HAVE HAD TO JUMP ON THE BRAKES MANY TIMES TO AVOID REAR ENDING OTHER DRIVERS. I HAVE SPOKEN WITH SEVERAL INDIVIDUALS WHO OWN, DRIVE OR HAVE DRIVEN THESE GMT900 SERIES HYBRIDS (2008-2013 CHEVY TAHOE/SILVERADO HYBRIDS, GMC YUKON HYBRIDS, CADILLAC ESCALADE HYBRIDS) ALL INDIVIDUALS HAVE DESCRIBED THE DREADED LURCH. SOME SAY REPLACING THE ELECTRIC AUXILIARY TRANSMISSION FLUID PUMP SOLVES THE PROBLEM, OTHERS STILL HAVE LURCHING ISSUES. ONE INDIVIDUAL WHO DRIVES A CADILLAC ESCALADE HYBRID CLAIMED TO HAVE ACTUALLY REAR ENDED SOMEONE DUE TO THE UNCONTROLLABLE LURCH. AS FOR MY PERSONAL CAR, THE LURCH OCCURS IN STOP AND GO TRAFFIC AND OCCURS AT LEAST ONCE A WEEK, SOMETIMES MORE. THANKFULLY I HAVE NOT BEEN INVOLVED IN AN ACCIDENT YET, HOWEVER I FEEL ONE MAY BE IMMINENT. HERE IS A LINK TO A TAHOE/YUKON OWNERS FORM WHERE I HAVE SHARED SOME OF MY FINDINGS: HTTPS://WWW.TAHOEYUKONFORUM.COM/THREADS/HYBRID-TRANSMISSION.104102/

WHEN I PRESS DOWN ON THE GAS, MY VEHICLE STALLS ABOUT FIVE SECONDS BEFORE IT ACTUALLY TAKES OFF. WHEN I TRY TO STOP, IT DOES NOT STOP RIGHT AWAY AS I PRESS DOWN ON THE BREAK. I'VE ALMOST REAR ANOTHER VEHICLE ON SEVERAL OCCASIONS WHILE SITTING AT A RED LIGHT. I HAVE TO STAY AT LEAST 15 FEET AWAY FROM THE VEHICLE IN FRONT OF ME. MY VEHICLE HAS SHUT DOWN WHILE I WAS DRIVING. MY ENGINE LIGHT COMES ON AND GOES OFF PERIODICALLY. IF I TURN MY WHEEL TO SHARPLY (REVERSE OR FORWARD), IT JERKS, MAKES A LOUD NOISE, AND THEN IT FEELS LIKE ITS ABOUT TO CUT OFF. I FEEL REALLY UNSAFE DRIVING, HOWEVER, I HAVE NO CHOICE BECAUSE I HAVE TO WORK.

TL* THE CONTACT OWNS A 2009 CHEVROLET TAHOE HYBRID. WHILE DRIVING 35 MPH, THE VEHICLE STALLED AND THE CHECK HYBRID SYSTEM ERROR MESSAGE DISPLAYED. THE VEHICLE WAS RESTARTED AFTER TWO HOURS. THE VEHICLE WAS TAKEN TO MULTIPLE INDEPENDENT MECHANICS WHO DIAGNOSED THAT THE HYBRID COOLANT SYSTEM FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 139,444.

TL* TAKATA RECALL. THE CONTACT OWNS A 2009 CHEVROLET TAHOE HYBRID. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V381000 (AIR BAGS). THE PART WAS NOT AVAILABLE WITHIN A REASONABLE TIME FRAME TO SCHEDULE THE RECALL REPAIR. THE DEALER DID NOT GIVE A SPECIFIC DATE FOR WHEN THE PART WOULD BECOME AVAILABLE. THE MANUFACTURER COULD NOT PROVIDE AN ESTIMATED DATE FOR WHEN THE CONTACT'S VEHICLE WOULD RECEIVE THE RECALL REPAIR. THE CONTACT WAS NOT EXPERIENCING A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.