Fan of my 2012 GMC Terrain

Asked by Jul 26, 2016 at 02:37 AM about the 2012 GMC Terrain SLE2

Question type: Maintenance & Repair

When I would go over a bump the blower of my air
conditioner fan system would stop working for a
brief second... Then it would slowly come back
on... Went over a bump last night and it went off
and never came back on it all today when I tried
the air conditioning I checked all the fuses all the
fuses are fine today when I was driving I Bank on
the knob and it came on and then I went over a
bump and it went off again so is this something in
the controls on the dash

1 Answer


Sound like you have a lose connection. Worse case would be a crack in the circuit board and the twisting opens a circuit and a knock re-makes the connection. That is more of a possibility than a lose wire. I'd have the wiring checked and the switch itself first.

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