I've got a 98 blazer 4x4 that I've had for about a year now. I've used the 4wd before and it worked fine. But that was this summer. It iced and snowed today so I went for the 4wd but it will only go into 4lo. I tried 4hi but got nothing. Tried it in Neutral and on the fly from 4lo. Nothing. No change, no light on 4hi. Am I doing something wrong? Any ideas worth trying?

 

Are you sure its not engaging or just the light burnt out?

 

x

 

I would go with curtain #3.

 

mine done the same and it was tear in one of the hoses and they did that and then the switch on the fire wall was gone so check all of that stufff