GMC TSB #G-176945
2014 GMC Sierra 1500
Affected Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
- Summary
- 13331 - Service Update. Replace the SIDI high pressure fuel pump. The SIDI high pressure fuel pump in these vehicles may have been misbuilt. This could result in extended crank, rough idle, DTCs, MIL for low fuel pressure, and possible loosening or fracture of the pump body-to-flange bolts.