Transmission Cooler Busted In Radiator

10.0

really awful
Typical Repair Cost:
$2,000
Average Mileage:
92,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. replaced transmission (1 reports)
2007 Hummer H3 transmission problems

transmission problem

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2007 Hummer H3 Owner Comments

problem #1

May 172018

H3 3.7L

  • Automatic transmission
  • 92,000 miles

A D V E R T I S E M E N T S

Bought the car and loved it, 2007 H3 Red ran great, then 6 months later with 90,000ish miles on it, the trans cooler busted in the radiator on the way to my niece's funeral. I got it towed to my dad's and flushed the engine, bought a new radiator and flushed the tranny. I drove home back to Houston the next day with no issues, and the next day I didn't drive it - but the very next day it would shift. So I replaced both shift solenoids.

Within 2 months it did it again but this time the transmission was toast so I ordered another and installed it. They upgraded it from a 4l60e to a 4l80e which I didn't know until a year later. After a year or so, my nightmare continued on the next post. Tranny was 1800 out of Florida.

- James D., Splendora, TX, US

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