PIT5736C

Bulletin No.: PIT5736C
Published date: 11/2/2023
Preliminary Information
PIT5736C Diagnostic Tip - Manual HVAC Settings During a Remote
Start
Models
Brand:
Model:
Model Years:
VIN:
from
to
Engine:
Transmissions:
Chevrolet
Silverado 1500 (New Model)
2019
All
All
All
All
Chevrolet
Silverado
2020 - 2024
All
All
All
All
GMC
Sierra 1500 (New Model)
2019
All
All
All
All
GMC
Sierra
2020 - 2024
All
All
All
All
Involved Region or Country North America
Additional Options (RPO)
Single Zone Manual HVAC RPO C67 or C4P
Condition:
Some owners ma y question how the HVAC system operates
during a remote vehicle start (RVS) event .
Cause:
Vehicle Owner / Dealership Technician Inquiries.
Correction/Function:
Cold ambient temperature - below 50°F (10°C):
Mode = Defrost
Temperature = Full Hot
Blower = 8
Recirculation = Fresh Air
A/C compressor = Only commanded on if conditions allow compressor engagement.
Hot ambient temperature - above 59°F (15°C):
Mode = Panel Vents
Temperature = Full Cold
Blower = 8
Recirculation = Recirculate
A/C compressor = On
Mid ambient temperature - anything in between "cold" and "hot" ambient temperature values that are listed
above:
Mode = Last known setting
Temperature = Last known setting
Blower = Last known setting
Recirculation = Last known setting
A/C compressor = Last known setting
Note: On transition to ignition on following an RVS event, the HVAC settings will return to last known settings.
Version History
Version History
Version
4
Modi ed
03/09/2020 - Created on
10/08/2020 - Updated options and model sections
11/01/2022 - Update to the model years
11/02/2023 - Update to the model years
© 2023 General Motors. All Rights Reserved.