Cargo Lamp Indicator Turns On Briefly When Dome/Glove Box Lamp is Activated - kw body compartment electrical flicker IPC light MIL switch

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

A customer may comment that the cargo lamp indicator turns on briefly when the dome or glove box lamps are turned on.

To correct this back feed from ckt 149 to ckt 1732, a diode must be installed in ckt 149. On full size trucks, use SI doc ID number 870692 and install diode part number 12112422 in ckt 149 between the cargo lamp and I/P Relay Block C3 terminal "D". On Avalanche and Escalade EXT, use SI doc ID number 1247803 and install diode part number 12112422 in ckt 149 at connector C390. Connector 390 is located on the right side of the right rear window latch, behind the rear upper garnish molding (See Document id: 803557) (Note: the diode must go between the 2 wires from the cargo lamp and the 2 wires to the switch and TBCM.)

Additional Note: Install the diode so the silver band on the diode is towards the TBCM reference voltage side.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(03 and 04 Chevrolet Avalanche/Full Size Pickup ) and (03 and 04 GMC Full Size Pickup ) and (03 and 04 Cadillac Ext)

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