Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

• Refer to Headlamp Bulb Replacement - Left Side (GMC with T4F)Headlamp Bulb Replacement - Left Side (Chevrolet with T4F)
• Refer to Headlamp Bulb Replacement - Right Side (Chevrolet with T4F and LYX)Headlamp Bulb Replacement - Right Side (GMC with T4F and LTG)Headlamp Bulb Replacement - Right Side (GMC with T4F and LYX)Headlamp Bulb Replacement - Right Side (GMC with T4F and LH7)Headlamp Bulb Replacement - Right Side (Chevrolet with T4F and LTG)Headlamp Bulb Replacement - Right Side (Chevrolet with T4F and LH7)
• Refer to Headlamp Replacement (Chevrolet)Headlamp Replacement (GMC)
• Refer to Control Module References for BCM replacement, programming, and setup