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GMC TSB #PIT5229
2014 GMC Sierra 1500
TSB Document:
Affected Component: EQUIPMENT:APPLIANCE:AIR CONDITIONER
- Summary
- This Preliminary Information communication provides information to the technician about vehicles that may have excessive dust intruding into the cabin. Technician can update the Heater-Vent-Air Conditioning control module which will close the recirculation door 90% when in recirculation mode. If the customer would like to keep the factory calibration in which the recirculation door closes off 100% of the outside air, please advise the customer to place the Heater-Vent-Air Conditioning system in fresh air mode while traveling on dusty roads.
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