Worst Complaints About the Hummer H3T

H3T owners are having the most trouble with the cooling system (50%), electrical (50%), and the We've listed the most common owner complaints below. The full list is available on CarComplaints.com.

  1. Transmission Fluid Mixing With Engine Coolant 1 complaints at an average of 336 miles in the 2009 Hummer H3T.
  2. Automatic Locks Not Working Properly 1 complaints at an average of 65,000 miles in the 2009 Hummer H3T.

What's Wrong with the H3T?

The H3T only has one generation which runs from 2009 to 2010. To date, it's earned a PainRank™ of 1.87 which ranks 3rd.

Generation Model Years Reliability Complaints PainRank (?)
1st Gen H3T 2009–2010
2 2.49

The most common H3T problems

Recent H3T News