Lock System Does Not Unlock

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Symptom Diagnostic Procedure Chart - Lock System Does Not Unlock (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Symptom Diagnostic Procedure Chart - Lock System Does Not Unlock (2 Of 2)

Courtesy of GENERAL MOTORS CORP.