97 blazer 4WD don't work

[lovemypets5]

I have a 1997 blazer, 4door, 111K miles, when I hit the 4wd hi or lo button, they light up but the 4wd don't engage? Can anyone give me any possible problems?

[MT-2500]

What transfer case?
Have you checked for codes?

[big-daddy-of-3]

I have a '97 blazer with the same problem. when I push the 4wd button the front drive shaft locks in place but, the both front wheels still turn free. where can I find the codes on the transfer case?

[laxman21]

Originally Posted by big-daddy-of-3

I have a '97 blazer with the same problem. when I push the 4wd button the front drive shaft locks in place but, the both front wheels still turn free. where can I find the codes on the transfer case?

Sounds more like a vacuum problem. Have you check the actuator under the battery?

[MT-2500]

You need to start your own New Thread.
Then give all info starting with what transfer case you have and what the shift button lights are doing.