4.0

definitely annoying
Typical Repair Cost:
No data
Average Mileage:
6,500 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
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2018 GMC Terrain AC / heater problems

AC / heater problem

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2018 GMC Terrain Owner Comments

problem #1

May 062019

Terrain SLE 1.5L V4

  • Automatic transmission
  • 6,500 miles

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

My 2018 Terrain's AC makes a squealing noise when turned on, and the noise stays on until I hit 40 mph speed. The noise doesn't exist when I don't turn the AC on.

- John B., Kansas City, MO, US

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