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NHTSA — Power Train: Manual Transmission Problems


fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
11,832 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 transmission problems

transmission problem

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2006 Hummer H3 Owner Comments

problem #1

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

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