HVAC Operation During Remote Start (PIT5061C)

HVAC OPERATION DURING REMOTE START

TECHNICAL SERVICE BULLETIN

SERVICE INFORMATION

Brand:	Model:	Model Year:		VIN:		Engine:	Transmission:
		from	to	from	to
Buick	Enclave	2008-2017		All	All	All	All
Chevrolet	Traverse	2009-2017		All	All	All	All
GMC	Acadia	2007-2016		All	All	All	All
GMC	Acadia Limited	2017		All	All	All	All
Saturn	Outlook	2000-2011		All	All	All	All

Supersession Statement

This PI was superseded to update Model Years. Please discard PIT5061B.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

CONDITION/CONCERN

Operation of the HVAC controls during a remote start event.

RECOMMENDATION/INSTRUCTIONS

During remote start, automatic HVAC equipped vehicles will adjust cabin temperature and turn on defoggers according to outside temperature and default back to the previous key off setting when the key is inserted and rotated forward.

Refer to the table below for system operation.

	RPO CJ2
OAT	High	Mid	Low
	(above 86°F)	(50°F - 86°F)	(below 50°F)
	(above 30°C)	(10°C - 30°C)	(below 10°C)
Front Blower	auto	auto	auto
Front Mode	panel	panel	defrost
Front Temp	full cold	73tset	full hot
Compressor	on	on	on (above 2°C)
Recirc	auto recirc	auto recirc	auto recirc
Rear Blower	same as front	same as front	same as front
Rear Mode	same as front	same as front	same as front
Rear Temp	same as front	same as front	same as front
Rear Defog	off	off	on
Heated Seats	off	off	on

On C67 systems, the system will operate the same settings as when the vehicle was last turned off.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.