LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Secondary And Configurable Customer Controls >> Diagnostic Information and Procedures >> Drive Mode Switch Malfunction >> DTC Descriptors
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Descriptors

DTC P05D1

Drive Mode Select Switch Circuit Low

DTC P05D2

Drive Mode Select Switch Circuit High

DTC P05D3

Drive Mode Select Switch Circuit Performance

For symptom byte information, refer to Symptom Byte List .