DTC B2610
Circuit Description
The body control module (BCM) receives a variable voltage signal from the instrument panel (I/P) dimmer switch requesting to illuminate the illumination lamps to a desired intensity. When this occurs, the BCM directly sends a variable voltage based on the I/P dimmer switch position on the instrument panel lamps dimming supply voltage circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuit.
Voltage for the instrument panel lamps dimming supply voltage circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuits is from the TBC 2 A fuse in the instrument panel fuse block directly through the BCM to these circuits.

1
Did you perform the Diagnostic System Check - Vehicle?
YES - Go to Step 2
NO - Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
Is the TBC 2 A fuse in the instrument panel fuse block open?
YES - Go to Step 3
NO - Go to Step 4
3
Test the instrument panel lamps dimming control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
YES - Go to Step 11
NO - Go to Step 8
4
Test the instrument panel lamps dimming supply voltage circuit and the instrument panel lamps dimming control circuit for an open, high resistance, short to voltage or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
YES - Go to Step 11
NO - Go to Step 5

Are you confused yet ? The info above is a Chevy factory repair manual diagnostic flow chart for DTC B2610 . Your best bet would be to take your vehicle to a qualified repair shop .

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