NHTSA — Service Brakes, Hydraulic Problems


really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
33,013 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Hummer H3 brakes problems

brakes problem

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2006 Hummer H3 Owner Comments

problem #10

Jan 032012


  • 160,000 miles


The contact owns a 2006 Hummer H3. The contact stated that while braking for a traffic stop, the vehicle hesitated to stop with the illumination of the traction warning lamp. The vehicle was not taken to the dealer and the manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and the current mileage was 160,000.

- Callahan , FL, USA

problem #9

Dec 132009

H3 5-cyl

  • 32,000 miles
Brakes had to be done @ less than 32,000 miles. This was all four sets of pads and all four rotors. Early ball joint and tie rods failure (both sides) on a Hummer H 3. the first was under 50,000 miles and now the other side @ 55,000. Truck has not been abused in anyway.

- Ma, MA, USA

problem #8

Dec 122009


  • 45,057 miles
The contact owns a 2006 Hummer H3. While driving at various speeds, the brakes would not engage when the brake pedal was depressed and it would also continue to accelerate. The contact once crashed into a vehicle in front due to the failure. There were no injuries. The vehicle was taken to an authorized dealership where it was repaired. The failure occurred four additional times and the dealer made repairs to the brakes but could not pinpoint the cause for failure. The contact refused to drive the vehicle as she felt that it was unsafe. There were no repairs to the vehicle that successfully fixed the problem at the time of the complaint. The failure mileage was 45,057. The current mileage was approximately 110,000.

- Loganville, GA, USA

problem #7

Dec 302008


  • 24,000 miles


The contact owns a 2006 Hummer H3. While driving 60 mph, the ABS indicator illuminated. Seconds later, the ABS activated without the brake pedal being depressed. The vehicle went out of control and crashed into a wall. There were no injuries. He took the vehicle to the dealer and they test drove the vehicle, but the failure could not be recreated. A report was filed with the manufacturer. An investigator examined the vehicle and concluded that the battery was loose which pulled and shaved the ABS wire. Auburn police report number 0818569 was filed. The failure mileage was 24,000 and current mileage was 25,000.

- Madison Heights, MI, USA

problem #6

May 052008


  • 11,832 miles
The contact owns a 2006 Hummer H3. On May 23, 2008, while driving 35 mph, the contact attempted to downshift and noticed that the transmission made a rubbling sound. The transmission stopped functioning and the vehicle suddenly pulled to the left. The vehicle was towed to a GMC dealer and they stated that the clutch assembly exploded. The vehicle was serviced and the contact did not notice any differences prior to the failure. While driving 55 mph, the brake warning light illuminated on the instrument panel. The brake pedal extended to the floor when it was depressed. The contact had to downshift and apply the emergency brake to stop the vehicle. The vehicle was towed to the dealer and they stated that the brake line had cracked on both sides of the vehicle. The contact was not in a crash, but the vehicle was serviced for the failure. The current mileage was 12,500 and failure mileage was 11,832.

- Los Angles, CA, USA

problem #5

May 152008


  • miles
The contact owns a 2005 Chevrolet HHR. While driving 15 mph, the vehicle would not decelerate when the brake pedal was depressed. The contact veered off the road and into a ditch, which stopped the vehicle. There were no warning indicators prior to the failure, but after the failure occurred, the brake warning lights illuminated on the instrument panel. The failure recurred in January of 2008. She took the vehicle to the dealer after each occurrence and assumed that the vehicle had been repaired. The contact is very concerned about her safety. The current mileage was 55,000 and the failure mileage was unavailable.

- Loganville, GA, USA

problem #4

Aug 012007

H3 4WD 5-cyl

  • Automatic transmission
  • miles


The contact owns a 2006 Hummer H3. He stated that he was aware not aware of possible brake failure for his vehicle. There had been no failure to date. The mechanic stated that there was excessive wear on the front brakes. The current mileage was 16,000. Updated 02-01-08 updated 02/01/08

- Santa Maria, CA, USA

problem #3

Apr 122007

H3 5-cyl

  • Automatic transmission
  • 48,200 miles
There was a left rear wheel speed sensor that failed. The sensor sent data to the computer that the wheel was spinning when it wasn't. with no warning, the computer applied the brakes abruptly and firmly. We were in city traffic and speed was slow. My only safety concern at this time was that we would be rear-ended as we probably had no brake light operation as the brake pedal was not used. After this happened numerous times in 3-5 minutes, we then got dash error codes and lights that the ABS and traction control systems had failed. The problem then went away as I assume the computer turned off these systems since they had failed. We had previously been towing a small U-haul trailer and could only imagine what might have happened if this occurred at interstate highway speeds with a trailer in tow, and even more scary if the road would also have been wet. When we got to the dealer for repair, the warnings had reset, and I assume the systems were active again. Luckily an error code was stored. The problem was fixed under warranty and the service received was satisfactory, but I think there is a design flaw in a system that would allow the computer to apply the brakes with no warning and for no apparent reason. At that time, there is nothing I as a driver could do concerning the brakes. It seems there should be a redundant system where there must be two feedbacks that agree before the system applies the brakes, and if the two feedbacks do not agree then the system is disabled and an error message is given. This certainly seems to me to be a major safety flaw. The bad part was fixed, but I am not sure I trust the safety of the vehicle. There was only one failure. No damage was done. However, under different highway conditions the situation could have been deadly.

- Hartville, OH, USA

problem #2

Apr 242007

H3 5-cyl

  • Automatic transmission
  • 40 miles
Problems with brakes and steering on vehicle. In shop for 3 months. Picked up from repair and lost control of vehicle 1 mile from dealership with complete loss of steering control. Dealer and tech came and picked up vehicle and can not determine the reason. Ongoing problem for many months vehicle is dangerous and I am now scared to drive. Dealer has vehicle.

- Goose Creek, SC, USA

problem #1

Jun 082006

H3 4WD 4-cyl

  • Automatic transmission
  • 9,000 miles
Complete brake failure, no warnings, no lights on dash. Car under warranty, only 9000 miles. Car dealership cannot find any problems, did no repairs. Advised us to wait until the problem repeats itself. Was able to keep car under control and managed to get it stopped. However, this happened in a rural area with little traffic. Do not feel safe driving until the problem repeats itself!

- New Castle, PA, USA

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