Section 1476 (Engine Control System - Diagnosis - 4.8L, 5.3L, & 6.0L (DTC P0601 To DTC U0107))

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.