When your in 4 low, does your 4 low light up? Mine doesn't but I seen where the indicator is at.

 

I never even looked. Guess I always know when I shift into 4-low and never thought to look for a light to tell me. Truck is a bit slow in 4-low when I push the loud pedal.

I'll take a look tomorrow and post an answer.

 

It's rather wicked when it shifts from 1st to 2nd.

 

My 07 does not, I was wondering the same thing, the place for the light is there but it never comes on. My 06 mega cab had the electronic four wheel drive and the light worked on it.