Schematic Reference: Instrument Cluster Schematics

Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information in 2005 C/K Truck Service Manual

1. Turn the ignition ON, with the engine OFF.
2. With a DMM, measure the voltage of the 24V battery and compare the voltage value with the voltmeter gage display.

Does the voltmeter gage display approximately the same value as the battery voltage?

Go to 24V Generator Inoperative

Go to Step 3

Test the battery voltage circuit of the voltmeter gage for an open, for a short to ground, or for a high resistance.

Did you find and correct the condition?

Go to Step 6

Go to Step 4

Test the ground circuit 150 of the voltmeter gage for an open or for a high resistance.

Did you find and correct the condition?

Go to Step 6

Go to Step 5

Replace the voltmeter gage. Refer to Voltmeter Gage Replacement .

Did you complete the replacement?

Go to Step 6

___

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2