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NHTSA — Power Train: Automatic Transmission Problems


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
8,000 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.

2003 Hummer H2 transmission problems

transmission problem

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2003 Hummer H2 Owner Comments

problem #3

Aug 152006

H2 8-cyl

  • Automatic transmission
  • miles


2003 H2 Hummer, transmission fluid leaking into the coolant system that requires removal of all hoses and radiator flushing and cleaning and possibly removing the transmission because of contamination. Extremely expensive and I believe to be a defect in workmanship.

- Bennington, NE, USA

problem #2

Aug 172004

H2 4WD

  • Automatic transmission
  • 24,000 miles
Consumer was going 70 mph and the two front tires locked, while the two back tires kept moving. Vehicle then continued to skip. The driveshaft was replaced. For the past 8 month this vehicle has been in the shop more than at the consumer's home. The vehicle has needed a new alternator, transmission, battery, ignition and drive shaft. The roof leaked and the consumer had to replace one of the side windows.

- Agoura Hills, CA, USA

problem #1

Sep 282003


  • miles
Vehicle died 4-5 blocks away from dealership the day of purchase. (nar) problems with the vehicle power train transmission and battery had to be replaced.

- Avila Beach, CA, USA

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