GMC Sierra
P0740
Error code P0740 on a GMC Sierra T1XX (2019-Present) indicates a malfunction within the torque converter clutch (TCC) system, specifically related to improper engagement or failure to engage.
1 SolutionP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Transmission
Symptoms
6 common
- •Check engine light illuminated
- •Poor fuel economy
- •Slipping transmission during acceleration
- +3 more
Most Affected Generations
1 generation
T1XX
1
Top Affected Components
1 component
Transmission
1
Severity Levels
1 level
high
1
Quick Facts
1
Total Solutions
1
Affected Components
6
Common Symptoms
1
Generations
All Solutions
Showing 1 of 1 solution for error code P0740 across all generations.