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Review on Genuine GM Parts 15-81773 HVAC Blower Control Module by Rick Kreutzer

Revainrating 5 out of 5

Installed on 2005 Chevy Trailblazer with ATC

This is an updated resistance module for several GM vehicles. This fixed my 2005 Chevy Trailblazer with RPO automatic temp control, code CJ2, because the blower was stuck at high speed even with the key off and also couldn't turn the fan off with the fan switch. The old style resistor module was black with a wired fan electrical connection. This new style requires replacing the cable connector with one where the fan connector and control wires are in the same connector and are now separate from the resistor module. Keep your GM fully GM.

Pros
  • Pleased
Cons
  • Repair