Technical Service Bulletins (TSBs) for the 1994 Sierra 1500 are official communications between GMC & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

• TSB #PIE-0043

  Date Announced:

  FEB 01, 2010

  NHTSA ID:

  #10034428

  CHEVROLET:GMC: ENGINEERING INFORMATION-FUEL TANK PRESSURE SENSOR, DTCS P0446, P0451 OR P0454 SET. GMC ENGINEERING IS ATTEMPTING TO DETERMINE THE ROOT CAUSE OF THE ABOVE CONCERN. *PE Read More »