LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2006 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Body & Frame >> Windows >> Doors >> Diagnostic Information and Procedures >> Diagnostic Code Index
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

DTC Description
DTC B1023  Integral Switch Performance
DTC B1544, B1600, or B1605 
  • DTC B1544 Mirror Motors Common Circuit
  • DTC B1600 Mirror Motor 1 Vertical Circuit
  • DTC B1605 Mirror Motor 2 Horizontal Circuit
DTC B1580, B1590, B1610, or B1620 
  • DTC B1580 Mirror Horizontal Position Sensor Circuit
  • DTC B1590 Mirror Vertical Position Sensor Circuit
  • DTC B1610 Passenger Mirror Horizontal Position Sensor Circuit
  • DTC B1620 Passenger Mirror Vertical Position Sensor Circuit
DTC B1640 or B1645 
  • DTC B1640 Left Front Mirror Heater Circuit
  • DTC B1645 Right Front Mirror Heater Circuit
DTC B1722  Mirror Power Fold Control Circuit
DTC B3604 or B3605 
  • DTC B3604 All Windows Up Circuit
  • DTC B3605 All Windows Express Down Circuit
DTC B3808  Rear Door Lock Relay Circuit
DTC B3809  Rear Door Unlock Relay Circuit
DTC B3819  Left Rear Window Up Control Circuit
DTC B3820  Left Rear Window Down Control Circuit
DTC B3821  Left Rear Window Relay Power Circuit
DTC B3822  Right Rear Window Up Control Circuit
DTC B3823  Right Rear Window Down Control Circuit
DTC B3824  Right Rear Window Relay Power Circuit
DTC B3825  Liftgate Lock Signal Circuit