LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1661 (Engine Control System & Fuel System - 6.6L (LMM) - DTC P1448 Top DTC P2510) >> DTC P2228 or P2229 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the BARO parameter with a scan tool.
  3. Compare the BARO parameter to the range specified in the Altitude Versus Barometric Pressure table.
    • If the BARO parameter is outside the range specified, replace the ECM.
scientia non olet · About LEMON Manuals