Suburban 1/2 Ton 2WD V8-5.3L VIN T (2004)
The new auxiliary HVAC control module is compatible with either the first or second design blower motor control module. When using the new
auxiliary HVAC control module, the customer may notice a slight increase in the rear blower motor speed (approximately 50 rpm) at a given setting, as
compared to the blower motor speed at the same setting with the original HVAC control module. If the customer comments that the increase in blower
speed at a given setting is objectionable, the blower motor control module may be replaced with the second design part listed below to correct the slight
increase in speed.
The revised auxiliary HVAC control module should not be used unless one or both of the DTCs are set or one or more of the conditions listed above are
present. The revised auxiliary HVAC control module will not correct any other DTC or Air Conditioning (A/C) performance concern.
Parts Information
Auxiliary HVAC Control Module
The blower motor control modules listed below should not be used unless the customer finds the change in blower speeds between the original and the
new auxiliary HVAC control modules objectionable.
Blower Motor Control Modules
Warranty Information
For vehicles repaired under warranty, use the table.
