7.0

pretty bad
Typical Repair Cost:
$220
Average Mileage:
104,000 miles
Total Complaints:
2 complaints

Most common solutions:

  1. flush & fill radiator, reseal temp sensor, replace thermosta (2 reports)
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problem #2

Feb 042011

Montana Special Edition 3.4L

  • Automatic transmission
  • 135,000 miles

Have to put antifreeze in every 100 Miles. It's Sludge and leaking.

- Austin P., Spring Creek, PA, US

problem #1

Oct 262006

(reported on)

Montana V6

  • Automatic transmission
  • 73,000 miles

5 years old.... Dex-Cool Anti Freeze system??

$215.... ya gotta love GM

- A P., Greenbush, MI, US