NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
66 reports40,000 miles · Apr 30, 2010
Latches/locks/linkages
TL*THE CONTACT OWNS A 2006 GMC 2500 CARGO VAN. WHILE THE VEHICLE WAS PARKED, THE CONTACT WAS UNABLE TO OPEN THE REAR PASSENGER CARGO DOOR. THE HINGE WAS BENT AND MISALIGNED; THE BOTTOM PINS WERE ALSO RUSTED. THE VEHICLE HAD NOT BEEN INSPECTED OR REPAIRED AT THE TIME OF THE COMPLAINT. THE CONTACT CALLED THE MANUFACTURER WHO REFER…
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TL*THE CONTACT OWNS A 2006 GMC 2500 CARGO VAN. WHILE THE VEHICLE WAS PARKED, THE CONTACT WAS UNABLE TO OPEN THE REAR PASSENGER CARGO DOOR. THE HINGE WAS BENT AND MISALIGNED; THE BOTTOM PINS WERE ALSO RUSTED. THE VEHICLE HAD NOT BEEN INSPECTED OR REPAIRED AT THE TIME OF THE COMPLAINT. THE CONTACT CALLED THE MANUFACTURER WHO REFERRED HIM TO THE DEALERSHIP TO HAVE THE VEHICLE REPAIRED AT HIS EXPENSE; THEY STATED THAT THEY WOULD DECIDE IF THEY WOULD ASSIST IN THE EXPENSES. THE FAILURE MILEAGE WAS APPROXIMATELY 40,000. THE CURRENT MILEAGE WAS APPROXIMATELY 43,000.
NHTSA ODI #10328191
49,341 miles · Apr 3, 2010
Power Train
2006 GMC DIESEL WITH ALLISON TRANSMISSION...LINES TO TRANSMISSION COOLER LEAKING. IT IS A FIRE HAZARD...FROM WHAT I READ ON THE INTERNET IT HAS BEEN A PROBLEM WITH ALL THE TRANSMISSION LINES INSTALLED ON THIS TRUCK
NHTSA ODI #10323574
29,500 miles · Feb 25, 2010
Tires
WHILE TOWING MY CAMPING TRAILER ON THE INTERSTATE I PULLED INTO A REST STOP. THEN I NOTICED THE RIGHT REAR TIRE WAS FLAT. LATER AT A GARAGE THE SERVICEMAN FOUND THE VALVE STEM HAD SPLIT. THIS WAS A SNAP-IN RUBBER STEM. I BELIEVE THE TIRES ON A TRUCK OF THIS SIZE (GMC 2500HD) AND WITH THIS AIR PRESSURE (80 PSI REAR, 55 FRONT) SHO…
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WHILE TOWING MY CAMPING TRAILER ON THE INTERSTATE I PULLED INTO A REST STOP. THEN I NOTICED THE RIGHT REAR TIRE WAS FLAT. LATER AT A GARAGE THE SERVICEMAN FOUND THE VALVE STEM HAD SPLIT. THIS WAS A SNAP-IN RUBBER STEM. I BELIEVE THE TIRES ON A TRUCK OF THIS SIZE (GMC 2500HD) AND WITH THIS AIR PRESSURE (80 PSI REAR, 55 FRONT) SHOULD HAVE STEEL CLAMP-IN TYPE STEMS. *TR
NHTSA ODI #10314088
74,950 miles · Feb 16, 2010
Engine And Engine CoolingSteering
TRUCK WAS PARKED IN GARAGE ON A FRIDAY NIGHT, WITH NO PROBLEMS. STARTED TRUCK SATURDAY AM TO BACK OUT OF THE GARAGE TO HOOK UP A TRAILER. I PUT THE TRUCK IN REVERSE, THEN DISCOVERED IT WOULDN'T STEER AND IT WOULDN'T STOP. NEARLY TOOK OUT THE SIDE OF THE GARAGE DOOR WITH THE MIRROR, NOT TO MENTION, NEARLY RUNNING OVER ONE OF M…
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TRUCK WAS PARKED IN GARAGE ON A FRIDAY NIGHT, WITH NO PROBLEMS. STARTED TRUCK SATURDAY AM TO BACK OUT OF THE GARAGE TO HOOK UP A TRAILER. I PUT THE TRUCK IN REVERSE, THEN DISCOVERED IT WOULDN'T STEER AND IT WOULDN'T STOP. NEARLY TOOK OUT THE SIDE OF THE GARAGE DOOR WITH THE MIRROR, NOT TO MENTION, NEARLY RUNNING OVER ONE OF MY KIDS! I HAD TO ENGAGE THE EMERGENCY BRAKE IN ORDER TO GET THE VEHICLE TO STOP - HALF IN AND HALF OUT OF THE GARAGE. I SHUT THE TRUCK OFF AND RESTARTED IT, BUT NOTHING CHANGED. CALLED A FLATBED TRUCK TO TAKE THE TRUCK TO THE DEALERSHIP. POWER STEERING PUMP HAD FAILED AND THEY REPLACED IT. I'M VERY LUCKY THAT I WASN'T PULLING THE TRAILER WHEN THIS HAPPENED, AS I COULD HAVE BEEN KILLED, OR KILLED SOMEONE ELSE. VERY SCARY SITUATION. THERE HAD BEEN NO TROUBLE WITH THE BRAKES OR STEERING LEADING UP TO THIS INCIDENT - IT WAS JUST BOOM - IT HAPPENED. I PURCHASED THIS DIESEL TRUCK NEW, AND HAVE HAD THE DEALERSHIP DO ALL SCHEDULED MAINTENANCE. IT HAS NEVER BEEN INVOLVED IN ANY ACCIDENT, AND IT IS KEPT INSIDE A GARAGE WHEN NOT IN USE. *TR
NHTSA ODI #10310884
32,000 miles · Nov 2, 2009
Power Train
I HAVE A 2006 GMC SIERRA 2500 WITH THE LBZ DURAMAX AND ALLISON TRANSMISSION. TWO OF THE TRANSMISSION COOLANT LINES BEGAN LEAKING TRANSMISSION FLUID AT THE CRIMP ENDS IN MARCH OF 2009. THE TRUCK ONLY HAD 32,000 MILES, BUT WAS 3 MONTHS BEYOND THE 36 MONTH WARRANTY PERIOD. SERVICE UNDER WARRANTY WAS DENIED. AN ON-LINE SEARCH RE…
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I HAVE A 2006 GMC SIERRA 2500 WITH THE LBZ DURAMAX AND ALLISON TRANSMISSION. TWO OF THE TRANSMISSION COOLANT LINES BEGAN LEAKING TRANSMISSION FLUID AT THE CRIMP ENDS IN MARCH OF 2009. THE TRUCK ONLY HAD 32,000 MILES, BUT WAS 3 MONTHS BEYOND THE 36 MONTH WARRANTY PERIOD. SERVICE UNDER WARRANTY WAS DENIED. AN ON-LINE SEARCH REVEALS SEVERAL OTHERS HAVE COMPLAINED ABOUT THIS ISSUE AND THAT THE DEALER INSTALLED OEM REPLACEMENT LINES ARE NO BETTER (DEVELOPING LEAKS SOON AFTER REPLACEMENT), YET NO TSB OR CORRECTIVE ACTION HAS BEEN ISSUED BY GM. LEAKING TRANSMISSION FLUID IS A FIRE AND ENVIRONMENTAL HAZARD. THE LEAKS ARE GETTING WORSE. *TR
NHTSA ODI #10290710
40,127 miles · Sep 22, 2009
Fuel System, Diesel
UNDER NORMAL DRIVING CONDITIONS WITHOUT CAUSE THE FUEL FILTER WATER-IN-GAS SENSOR BLEED VALVE LEAKS FUEL. THIS CAUSES FUEL TO LEAK INTO THE ENGINE COMPARTMENT. SYMPTOMS INCLUDE FUEL ON THE GROUND, FUEL ODOR, HARD/LONGER ENGINE CRANKING. THERE ARE OTHER REPORTS OF THIS PROBLEM AT : HTTP://WWW.DIESELPLACE.COM/FORUM/SHOWTHREAD.P…
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UNDER NORMAL DRIVING CONDITIONS WITHOUT CAUSE THE FUEL FILTER WATER-IN-GAS SENSOR BLEED VALVE LEAKS FUEL. THIS CAUSES FUEL TO LEAK INTO THE ENGINE COMPARTMENT. SYMPTOMS INCLUDE FUEL ON THE GROUND, FUEL ODOR, HARD/LONGER ENGINE CRANKING. THERE ARE OTHER REPORTS OF THIS PROBLEM AT : HTTP://WWW.DIESELPLACE.COM/FORUM/SHOWTHREAD.PHP?P=3452490 ALSO HTTP://WWW.GOOGLE.COM/SEARCH?HL=EN&RLS=COM.MICROSOFT:*&Q=DURAMAX+FUEL+FILTER+LEAKING+WATER+SENSOR&START=10&SA=N. *TR
NHTSA ODI #10284891
22,800 miles · Apr 24, 2009
Electrical SystemEngine And Engine CoolingPower Train
TL*THE CONTACT OWNS A 2006 GMC SIERRA 2500. THE FLY WHEEL, WHICH RUNS WITH THE TRANSMISSION AND HELPS CHANGE GEARS HAS HAD TO BE REPLACED THREE TIMES WITHIN TWO YEARS. WHILE DRIVING APPROXIMATELY 10 MPH DURING THE FIRST FAILURE, THERE WAS A LOUD CLICKING NOISE AND IT BECAME LOUDER OVER TIME. THE DEALER STATED THE VEHICLE WAS OPE…
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TL*THE CONTACT OWNS A 2006 GMC SIERRA 2500. THE FLY WHEEL, WHICH RUNS WITH THE TRANSMISSION AND HELPS CHANGE GEARS HAS HAD TO BE REPLACED THREE TIMES WITHIN TWO YEARS. WHILE DRIVING APPROXIMATELY 10 MPH DURING THE FIRST FAILURE, THERE WAS A LOUD CLICKING NOISE AND IT BECAME LOUDER OVER TIME. THE DEALER STATED THE VEHICLE WAS OPERATING NORMALLY. A FEW WEEKS LATER, THE NOISE WAS MUCH LOUDER; HOWEVER, A DIFFERENT DEALER 2 HOURS AWAY DIAGNOSED THE VEHICLE AND STATED THAT THE FLY WHEEL FAILED. AFTER BEING REPAIRED 24,000 MILES AND A YEAR LATER, THE FAILURE RECURRED. THE FLY WHEEL WAS REPLACED AGAIN AND LASTED 5 MONTHS BEFORE IT FAILED. THE POWER STEERING SHAFT ALSO NEEDED TO BE REPLACED DUE TO IT BEING WORN OUT AND FAILED AGAIN NINE MONTHS LATER. THE FAILURE MILEAGE WAS 22,800 AND THE CURRENT MILEAGE WAS 55,000. UPDATED 06/08/09 *BF THE POWER STEERING GEAR WAS LEAKING DUE TO LEAKING GEAR ASSEMBLY, THE HVAC BLOWER WAS INOPERATIVE, THE FLYWHEEL WAS CRACKED. THE DEALER REPLACED THE STRIPPED AND BROKEN EXHAUST STUDS. UPDATED 06/18/09.*JB
NHTSA ODI #10266628
19,803 miles · Mar 17, 2009
Tires
NEW LOOKING SNOW TIRE, TREAD SEPARATED FROM TIRE. APPROX. 62 MPH DOING DAMAGE TO TRUCK WHEEL WELL. TIRE DID NOT GO FLAT. CHECK OTHER THREE MATCHING TIRES , ALL LOOKED OK. CONTINUED ON TRIP, PARKED FOR THE NIGHT. APPROX. 70 MORE MILES INTO TRIP OTHER REAR TIRE SEPARATED AND WENT FLAT, CAUSING DAMAGE TO OTHER SIDE OF PICKUP WHEEL…
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NEW LOOKING SNOW TIRE, TREAD SEPARATED FROM TIRE. APPROX. 62 MPH DOING DAMAGE TO TRUCK WHEEL WELL. TIRE DID NOT GO FLAT. CHECK OTHER THREE MATCHING TIRES , ALL LOOKED OK. CONTINUED ON TRIP, PARKED FOR THE NIGHT. APPROX. 70 MORE MILES INTO TRIP OTHER REAR TIRE SEPARATED AND WENT FLAT, CAUSING DAMAGE TO OTHER SIDE OF PICKUP WHEEL WELL. CALLED AAA TOW TO TIRE STORE FOR A NEW SET OF FOUR. PICKUP IS AN GMC 2500 HD, 2006. BETWEEN THE TWO SEPARATIONS APPROX. 6500.00 DOLLARS DAMAGE. *TR
NHTSA ODI #10262134
Mileage unknown · Mar 2, 2009
Suspension
I ATTEMPTED TO PREVIOUSLY MAKE SEVERAL REPAIRS TO THE VEHICLE. THE FIRST OF THE PROBLEMS OCCURRED WHEN DRIVING. THE SUSPENSION MADE LOUD GRINDING NOISES AND AFTER 3 ATTEMPTS MADE IT WAS REPAIRED. NOW THE PROBLEM SEEMS TO HAVE RETURNED AND I AM NOT SURE WHAT I SHOULD DO. *TR
NHTSA ODI #10260483
58,260 miles · Jan 14, 2009
Power Train
I AM THE SHOP FOREMAN FOR A CONSTRUCTION COMPANY IN ALASKA. I DROPPED OFF A 2006 GMC 2500 PICKUP LAST WEEK TO THE DEALER TO HAVE A LEAK LOOKED AT. I GOT A CALL BACK FROM THEM SAYING MY TORQUE CONVERTER WAS BLOWN. THEY SAID GMC IS HAVING PROBLEMS WITH THE ALLISON TRANSMISSION AT COLD TEMPS (CAMPAIGN # 07293) I HAD THIS TRUCK IN A…
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I AM THE SHOP FOREMAN FOR A CONSTRUCTION COMPANY IN ALASKA. I DROPPED OFF A 2006 GMC 2500 PICKUP LAST WEEK TO THE DEALER TO HAVE A LEAK LOOKED AT. I GOT A CALL BACK FROM THEM SAYING MY TORQUE CONVERTER WAS BLOWN. THEY SAID GMC IS HAVING PROBLEMS WITH THE ALLISON TRANSMISSION AT COLD TEMPS (CAMPAIGN # 07293) I HAD THIS TRUCK IN AT 25000 MILES TO BE RE-PROGRAMMED AND AGAIN AT 49000 MILES. NOW, AT 58,000 MILES THE TORQUE CONVERTER IS BLOWN AND AFTER ARGUING WITH GMC, THEY WILL NOT WARRANTY THE WORK, THEY WANT ME TO PAY HALF OF THE 3200. I DROVE UP IN OUT COMPANY'S BRAND NEW '08 GMC 3500, HAD THE DEALERS MECHANIC LOOK AT IT. HE SNIFFED THE TRANNY DIPSTICK, GRIMMANCED, AND SAID THAT IT TOO WAS BLOWN. AT 4120 MILES, ANOTHER BLOWN TORQUE CONVERTER. THE SERVICE MANAGER SAID 17 TRUCKS SO FAR IN FAIRBANKS ALASKA HAVE SUFFERED SIMILAR FATES, DUE TO THIS MANUFACTURER ERROR. I AM LIVID, TO SAY THE LEAST! GMC NEEDS TO BE HELD ACCOUNTABLE FOR THIS, AND OWNERS NEED TO BE CONTACTED AND TOLD THAT THERE IS A PROBLEM! THERE IS A SAFETY ANGLE AS WELL, ACCORDING TO THE MECHANIC--AT A STOP LIGHT, THE TORQUE CONVERTER WENT OUT, LOCKED UP, AND PUSHED THE VEHICLE THROUGH THE LIGHT! *TR
NHTSA ODI #10254992