NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
177 reports19,350 miles · Feb 5, 2008
Steering
1. WHILE PARKING IN TIGHT SPACES OR MANEUVERING AT SLOW SPEEDS AND HAVING TO USE THE BRAKES AS WELL AS TRYING TO STEER, THE TRUCK LOSES POWER STEERING AND YOU HAVE TO USE BOTH ARMS TO STEER THE VEHICLE. 2. FAILURE OF THIS STEERING COULD QUITE EASILY CAUSE AN ACCIDENT DUE TO BEING UNABLE TO STEER THE VEHICLE TO AVOID AN ACCIDENT…
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1. WHILE PARKING IN TIGHT SPACES OR MANEUVERING AT SLOW SPEEDS AND HAVING TO USE THE BRAKES AS WELL AS TRYING TO STEER, THE TRUCK LOSES POWER STEERING AND YOU HAVE TO USE BOTH ARMS TO STEER THE VEHICLE. 2. FAILURE OF THIS STEERING COULD QUITE EASILY CAUSE AN ACCIDENT DUE TO BEING UNABLE TO STEER THE VEHICLE TO AVOID AN ACCIDENT, ONE ACTION IS TO STOP BUT TO GET OUT OF ANOTHER VEHICLES PATH WOULD NOT BE POSSIBLE. 3. SO FAR THE DEALERSHIP HAS CHECKED FOR LEAKS, TOPPED UP POWER STEERING FLUID. CHECKED FRONT END ALIGNMENT SPECS. FRONT Z HEIGHT WAS OUT OF GM SPECS, SO ADJUSTED BACK INTO SPECS. I WAS THEN TOLD TO DRIVE AND MONITOR. *TR
NHTSA ODI #10217054
Mileage unknown · Feb 5, 2008
Power Train
TRANSMISSIONS LINES ARE CONTINUING TO LEAK. HAVE BEEN TO THE DEALER TWICE THIS YEAR. DEALER HAS REPLACED COOLER LINES UNDER WARRANTY. TRUCK ONLY HAS 32000 MILES ON IT. DEALER NEEDS TO COME UP WITH A PERMANENT FIX, OR IT IS GOING TO COST THE CONSUMER A LOT OF MONEY TO KEEP HAVING THE TRANSMISSION LINES REPLACED. *TR
NHTSA ODI #10217023
56,665 miles · Feb 4, 2008
Power Train
LOWER TRANSMISSION LINE LEAKING AGAIN SHORTLY AFTER BEING REPLACED WITH A NEW ONE. THIS IS HAPPENING TO VERY MANY TRUCK NUMEROUS TIMES. 2006 2500 HD DURAMAX /ALISON. *TR
NHTSA ODI #10216913
20,000 miles · Feb 4, 2008
Power Train
THE ALLISON AUTOMATIC TRANSMISSION COOLER LINES ARE LEAKING. THIS POSES A FIRE HAZARD. GM NEEDS TO REDESIGN THE HOSES THAT CONNECT THE TRANSMISSION AND TRANSMISSION COOLER. MANY OTHERS ARE HAVING THIS SAME PROBLEM AND HAVE HAD THE LINES REPLACED MULTIPLE TIMES. *TR
NHTSA ODI #10216868
20,000 miles · Jan 7, 2008
Power Train
I HAVE A 2006 3/4 TON PICK UP WITH THE DURAMAX DIESEL AND ALISON TRANSMISSION. IN NOVEMBER OF 2006 AT ABOUT 20K MILES, A LOW PRESSURE TRANSMISSION COOLING LINE (PART NUMBER 219989580) DEVELOPED A MAJOR LEAK AND REQUIRED REPAIR. WITHIN WEEKS, THE REPLACED LINE FAILED AND THE DEALER INFORMED US THAT MANY TRUCKS OF THE SAME DESIGN…
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I HAVE A 2006 3/4 TON PICK UP WITH THE DURAMAX DIESEL AND ALISON TRANSMISSION. IN NOVEMBER OF 2006 AT ABOUT 20K MILES, A LOW PRESSURE TRANSMISSION COOLING LINE (PART NUMBER 219989580) DEVELOPED A MAJOR LEAK AND REQUIRED REPAIR. WITHIN WEEKS, THE REPLACED LINE FAILED AND THE DEALER INFORMED US THAT MANY TRUCKS OF THE SAME DESIGN WERE FAILING FOR THE SAME PART. IT TOOK WEEKS TO GET A REPLACEMENT PART FOR GM. FEED BACK FROM OTHER GM DEALERS INDICATED THAT THE PROBLEM WAS WIDE SPREAD. WHEN A REPLACEMENT PART WAS FINALLY PROVIDED, WE WERE INFORMED BY GM WESTERN REGION SERVICE THAT A DESIGN "FIX" HAD BEEN IMPLEMENTED AND THAT THE TRUCK WAS SAFE TO DRIVE. THREE WEEKS AGO, (45,000 MILES) MY TRUCK STARTED LEAKING TRANSMISSION FLUID AGAIN. AN INSPECTION BY THE DEALER REVEALED THAT NOT ONLY THE SAME LINE WAS LEAKING AGAIN BUT THAT TWO OTHER LINES OF THE SAME DESIGN WERE ALSO LEAKING. THIS DEALER, E&L MOTORS IN KEMMERER HAD ALREADY SEEN MORE THAN A DOZEN TRUCKS IN THE PAST FEW WEEKS WITH THE SAME PROBLEM AND WAS FRUSTRATED BECAUSE REPLACEMENT LINES FROM GM WOULD START LEAKING WITHIN DAYS OF INSTALLATION. WE WERE TOLD BY THE SERVICE MANAGER THAT THERE WAS A RUMOR THAT GM WOULD BE DOING A RECALL ON THIS PART. IN THE MEAN TIME, I AM NOT GETTING ANY DIRECT INFORMATION AND THE CORRECTIVE ACTION GM IS TELLING IT'S DEALERS IS TO HAVE THE OWNER CHECK THE TRANSMISSION FLUID FREQUENTLY, A SPECIAL FLUID WHICH IS NOT AVAILABLE THROUGH ANYONE EXCEPT AN AUTHORIZED GM DEALER. RECENT CONTACTS WITH OTHER GM DEALERS HAVE EXPOSED THE SAME PROBLEM WITH "DOZENS" OF TRUCKS IN OUR AREA WHICH ARE ALSO WAITING FOR A RELIABLE REPLACEMENT PART. I USE THIS TRUCK FOR WORK. DURING THE WINTER MONTHS, MY BIGGEST CONCERN IS HAVING ONE OF THE LEAKING LINES BLOW LEAVING ME STRANDED IN FREEZING WEATHER WHERE CELL COVERAGE EVEN ON THE INTERSTATE IS NOT ALWAYS POSSIBLE. *TR
NHTSA ODI #10214008
12,500 miles · Dec 14, 2007
Service Brakes, HydraulicSteering
VEHICLE SAT AT THE AIRPORT FOR 72HRS. WHEN I LEFT THE AIRPORT, THE BRAKES FELT SPONGY, BUT WERE ABLE TO STOP THE VEHICLE. ON THE FREEWAY AS I WAS BRAKING, THE BRAKES BEGAN TO FEEL MORE SPONGY, REQUIRING INCREASED STOPPING DISTANCE. WHEN I ARRIVED AT MY RESIDENCE APPROXIMATELY 45 MILES FROM THE AIRPORT, I TRIED TO TURN INTO MY DR…
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VEHICLE SAT AT THE AIRPORT FOR 72HRS. WHEN I LEFT THE AIRPORT, THE BRAKES FELT SPONGY, BUT WERE ABLE TO STOP THE VEHICLE. ON THE FREEWAY AS I WAS BRAKING, THE BRAKES BEGAN TO FEEL MORE SPONGY, REQUIRING INCREASED STOPPING DISTANCE. WHEN I ARRIVED AT MY RESIDENCE APPROXIMATELY 45 MILES FROM THE AIRPORT, I TRIED TO TURN INTO MY DRIVEWAY, ONLY TO FIND I HAD LOST ALL POWER STEERING ASSIST AND BRAKING ASSIST. I WAS ABLE TO FINALLY TURN IN, BUT HAD TO USE MY EMERGENCY BRAKE TO COME TO A FULL STOP. ONCE, STOPPED, I FOUND I COULD NOT TURN THE STEERING WHEEL AND THERE WERE NO BRAKES. I OPENED THE POWER STEERING RESERVOIR CAP, WHICH IMMEDIATELY SPEWED A FEW OUNCES OF P/S FLUID OVER THE ENGINE COMPARTMENT, FORTUNATELY NOT ON THE HOT EXHAUST. DEALER HAD THE VEHICLE TOWED 2 MILES TO THEIR DEALERSHIP WHERE THEY CLAIMED THEY COULD NOT DUPLICATE THE PROBLEM. HOWEVER, THEY DID KEEP IT OVER NIGHT AND DECIDE TO CHANGE A P/S PRESSURE RELIEF VALVE EVEN THOUGH THEY COULD NOT DUPLICATE ANYTHING. I FILED A COMPLAINT TO GM WITHOUT ANYONE TAKING THIS SERIOUS SAFETY ISSUE AS A REAL PROBLEM. THIS SAFETY ISSUED MUST BE ADDRESSED AND THE ROOT CAUSE MUST BE FOUND BEFORE SERIOUS INJURY/DEATH OCCURS DUE TO THIS PROBLEM. *TR
NHTSA ODI #10211892
19,025 miles · Dec 2, 2007
Power Train
THIS IS A 2006 6.6 TURBO DIESEL 2500 HD SILVERADO, THE FOUR WHEEL DRIVE WILL NOT ENGAGE LIGHT KEEP FLASHING, SERVICE 4 WHEEL DRIVE IS ON , THIS TRUCK ONLY HAS 19,000 MILES ON IT. *TR
NHTSA ODI #10210481
Mileage unknown · Nov 27, 2007
Electrical SystemVisibility
BLOWER FAN SPEED QUITS, WIRING IS MELTED APART FROM TOO MUCH AMPERAGE. THIS IS GOING TO CAUSE FIRES IF IT HAS NOT ALREADY DONE SO. OUR COMPANY HAS 8 OF THESE TRUCKS AND ALL OF THEM ARE DOING THIS. CHEVY 1500'S AND 2500 TRUCKS. *TR
NHTSA ODI #10210108
10,000 miles · Nov 27, 2007
EquipmentVisibility
TL*THE CONTACT OWNS A 2006 CHEVROLET SILVERADO 2500. WHILE DRIVING 50 MPH, THE CONTACT HEARD A LOUD WHISTLING NOISE COMING FROM THE PASSENGER SIDE VENT WHEN THE HEATER WAS ACTIVATED. THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE; HOWEVER, THEY REPLACED THE VENT COVER. THE FAILURE PERSISTED. HE TOOK THE VEHICLE TO THE DEALER …
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TL*THE CONTACT OWNS A 2006 CHEVROLET SILVERADO 2500. WHILE DRIVING 50 MPH, THE CONTACT HEARD A LOUD WHISTLING NOISE COMING FROM THE PASSENGER SIDE VENT WHEN THE HEATER WAS ACTIVATED. THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE; HOWEVER, THEY REPLACED THE VENT COVER. THE FAILURE PERSISTED. HE TOOK THE VEHICLE TO THE DEALER AND THEY STATED THAT THE TAPING OR MOLDING AROUND THE HEATER CORE MAY HAVE CAUSED THE FAILURE. THE DEALER SPRAYED SILICONE ON THE DASHBOARD; HOWEVER, THE FAILURE CONTINUED. APPROXIMATELY ELEVEN MONTHS LATER, THE DEALER INSPECTED THE VEHICLE AND STATED THAT THE FAILURE WAS A NORMAL OCCURRENCE. AS OF NOVEMBER 27, 2007, THE DEALER HAD NOT REPAIRED THE VEHICLE. THE FAILURE MILEAGE WAS 10,000 AND CURRENT MILEAGE WAS 13,635.
NHTSA ODI #10210093
10,200 miles · Nov 26, 2007
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2006 CHEVROLET SILVERADO 2500. THE CONTACT HEARD A PIERCING NOISE WHENEVER THE FAN WAS ACTIVATED FOR EITHER THE HEAT OR AIR CONDITIONER. THE NOISE LASTS THE ENTIRE TIME THE VEHICLE IS BEING DRIVEN. THE FAILURE WAS FIRST NOTICED WHILE DRIVING 50 MPH. THE CONTACT HAS TAKEN THE VEHICLE TO THE DEALER THREE …
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TL*THE CONTACT OWNS A 2006 CHEVROLET SILVERADO 2500. THE CONTACT HEARD A PIERCING NOISE WHENEVER THE FAN WAS ACTIVATED FOR EITHER THE HEAT OR AIR CONDITIONER. THE NOISE LASTS THE ENTIRE TIME THE VEHICLE IS BEING DRIVEN. THE FAILURE WAS FIRST NOTICED WHILE DRIVING 50 MPH. THE CONTACT HAS TAKEN THE VEHICLE TO THE DEALER THREE TIMES FOR THIS FAILURE. THE DEALER STATED THAT THIS WAS A NORMAL CHARACTERISTIC OF THE VEHICLE. THE CURRENT MILEAGE WAS 13,635 AND FAILURE MILEAGE WAS 10,200. UPDATED 12-12-07. *KB UPDATED
NHTSA ODI #10209913