IllustrationAFTER 9 INCHES OF RAIN REPORTED YESTERDAY FOR NORTH MIAMI , FLORIDA HUMMER H-3 FOUND WITH LEAKING BIG AMOUNT OF WATER IN DASHBOARD AND FLOOR OF THE CAR. HUMMER H-3-YR 2006. *AK
2006 GMC T-SERIES
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all T-SERIES years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 1 of 2 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Steering. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
2 reportsI PAID 25K FOR THIS 2006 GMC SIERRA TRUCK WITH 8600 MILES, PURCHASED FROM TEXAN CHEVEROLET IN HUMBLE, TX JULY 4TH 2006. NOTICED IT ABOUT 6K TO 7K MILES. CLUNK NOISE DRIVERSIDE UNDER HOOD. NOTICE NOISE WHILE BACKING OUT, GOING OVER SMALL BUMPS OR IN TRANSIT AT A SLOW SPEED. ALSO NOTICED A CLUNK COMING FROM THE REAR OF THE TRUCK W…
Read full complaint
I PAID 25K FOR THIS 2006 GMC SIERRA TRUCK WITH 8600 MILES, PURCHASED FROM TEXAN CHEVEROLET IN HUMBLE, TX JULY 4TH 2006. NOTICED IT ABOUT 6K TO 7K MILES. CLUNK NOISE DRIVERSIDE UNDER HOOD. NOTICE NOISE WHILE BACKING OUT, GOING OVER SMALL BUMPS OR IN TRANSIT AT A SLOW SPEED. ALSO NOTICED A CLUNK COMING FROM THE REAR OF THE TRUCK WHEN ACCELERATING FROM A STOP AND THEN STOPPING. WAS READING UP ON IT AN CAME TO THE CONCLUSION THAT IT'S PROBABLY MY SLIP/YOKE NEEDS TO BE REPLACED. YOU CAN FIND OWNERS WITH THE SAME PROBLEM HERE: HTTP://WWW.TOPIX.NET/FORUM/AUTOS/CHEVROLET-HHR/TTLO0J4LAV1OFM2DE SOMETHING SHOULD BE DONE.
Official recalls
206V311000 · Service Brakes, Air
Aug 16, 2006
CERTAIN TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS." AN INTERNAL CONTROL AND CHECK VALVE WITHIN THE AIR BRAKE APPLICATION VALVE ASSEMBLY WAS CONFIGURED IMPROPERLY, PREVENTING AIR FROM FLOWING THROUGH THE BRAKE SYSTEM AS DESIGNED. IN THE EVENT OF AN EMERGENCY STOP, THE VEHICLE'S STOPPING DISTANCE WOULD BE INCREASED.
Consequence & remedy
Consequence: IF STOPPING DISTANCE WAS LIMITED, A VEHICLE CRASH COULD RESULT.
Remedy: DEALERS WILL REPLACE THE AIR BRAKE APPLICATION VALVE ASSEMBLY ON C-SERIES OR REROUTE THE AIR BRAKE LINES ON T-SERIES FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 20, 2006. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463 AND ISUZU AT 1-800-255-6727.
06V254000 · Parking Brake:conventional:air
Jul 13, 2006
CERTAIN MEDIUM DUTY TRUCKS EQUIPPED SR-7 BENDIX BRAKE VALVES, THE CHECK VALVE INSIDE THE VALVE CAVITY MAY NOT PROPERLY SET, CAUSING INTERNAL AIR LEAKAGE. IF THE CHECK VALVE DOES NOT PROPERLY SEAT, THE RESULTING LEAKAGE CAN CAUSE A DELAY IN THE APPLICATION OF THE SPRING BRAKES TO PARK THE VEHICLE AFTER OPERATOR PULLS THE DASH VALVE BUTTON.
Consequence & remedy
Consequence: THE DELAYED PARKING BRAKE APPLICATION CAN OCCUR WITHOUT WARNING, LEADING TO UNINTENDED VEHICLE ROLLAWAY INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT THE VALVES AND REPLACE IT FREE OF CHARGE. THE RECALL BEGAN ON JULY 31, 2006. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, OR ISUZU AT 1-800-255-6727.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.