GMC TSB #N212330660
2021 GMC Sierra 2500
Affected Component: SERVICE BRAKES, HYDRAULIC
- Summary
- Service Update Bulletin. Certain vehicles may have an erratic signal coming from the engine manifold absolute pressure (MAP) sensor. Customers may notice the service engine soon (SES) lamp illuminate or was illuminated and turned off. DTC?s P0106 and P0108 may also be present as active or stored in history. Dealers will replace the MAP sensor.