GMC Sierra
B1084
The B1084 code for a GMC Sierra T1XX (2019-Present) indicates a problem with the HVAC (Heating, Ventilation, and Air Conditioning) system, specifically related to the mode door actuator.
1 SolutionB-CodeBody
B
Error Code Type
Body
Components
1 affected
HVAC
Symptoms
5 common
- •Inconsistent airflow direction from the vents
- •HVAC system not responding to temperature adjustments
- •Unusual noises coming from the dashboard area
- +2 more
Most Affected Generations
1 generation
T1XX
1
Top Affected Components
1 component
HVAC
1
Severity Levels
1 level
medium
1
Quick Facts
1
Total Solutions
1
Affected Components
5
Common Symptoms
1
Generations
All Solutions
Showing 1 of 1 solution for error code B1084 across all generations.