Have a 95 blazer 4.3l not sure if the 4x4 is working...how can i tell...4wheel low seems to...but 4 wheel high not sure...went in grass and guned it,but just rear spinned

 

so your transfer case is working if it pulls in 4Lo then its your front diff not engaging and thats most likely due to a vacuum issue. usually a really simple fix. follow this link and it will tell you everything you need to know. https://blazerforum.com/forum/tech-a...ill-help-7180/

 

*Moved to 'Steering, Suspension & Drivetrain'.*