TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

No heat. No actuators are working!!!

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Old January 20th, 2016, 2:30 PM
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Default No heat. No actuators are working!!!

NO HEAT ISSUE! What could be wrong. None of the actuators work in the vehicle for the recirculation, ac/heat or the mode actuator. AC and air will blow but no heat. Coolant is full and its not the heat core. We've tried to re calibration process also. It used to not blow any air at all and has the abs and brake light on constantly. The mechanic we went to took the brown wire at the fuse box under the seat and put a fuse with power to it and now it blows but its just cold air. What could it be?
Old November 20th, 2022, 12:04 PM
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My son's 2014 LTZ Captiva was stuck in cold only and actuators wouldn't move but checked ok when power applied.
Just removed XM/HVAC/DLC 15 amp fuse in the pass. side fuse box for 1 minute. Fixed it for now. Brought everything in the HVAC control back.
Old November 24th, 2022, 11:08 AM
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Do you have manual sliders or automatic climate control?
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