4x4 Dash Light Indicator

[Coby7]

What year?

[cameron24v]

What year?

Oops! 2004 4.8 AT.

 

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[Coby7]

Those have a little circuit in the cluster that lights an LED consisting of a resistor and the LED itself. It is very common for cold solders on the resistor to make this circuit fail. I just reflow the solder. But there's also a switch on the front differential that may fail.

 

[cameron24v]

Thanks Coby, I rebuilt the cluster a year ago, but didn't touch this or the other LEDs. I think I want to probe the wires at the front diff switch. If 4WD works, can I assume the diff switch is good and therefore the dash LED is the problem?

 

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[Coby7]

Nope, the diff switch is just to light the LED in the cluster to tell you it is locked, you will need to probe it to see if it switches when differential locks into 4X4.

[cameron24v]

Nope, the diff switch is just to light the LED in the cluster to tell you it is locked, you will need to probe it to see if it switches when differential locks into 4X4.

Got it. Thanks for the help!

 

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[ronbc]

Hello all. i have replaced the shift forks and oil pump in my 261 xhdgm transfer case. put it back in and it runs great,shifts great. but now when in in 2H in the dash light shows it is in  4x4 . And it is not, it stays in 2H tell i switch it to 4x4 ,switch it back to 2H and after a few sec it show 4x4 , it a manual shift