1993 Chevy S-10 4WD does not work

Tiny
MEECHIE25
  • MEMBER
  • 1993 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
93 s-10 blazer I have just put a new trany in it and let me tell you it was not cheep. Anyway the transfer case or font end will not lock in 4wd I have checked all connections and nothing happes when I put it in 4wd its the only thing that does not work on the truck and I am the kinda guy that has to have 4wd if you know what I mean. Please help. Thanks
Sunday, December 7th, 2008 AT 10:12 PM

4 Replies

Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Manual Transfer case or electronic?

With the transfer case in 4wd can you turn the front drive shaft?
If you can still turn the front drive shaft with it in 4 wheel the transfer case has a problem.
If the shaft won't turn in 4 wheel but the front axle isn't locked then you have a problem in the front axle interlock. Check the vacuum switch on the transfer case.
You should have vacuum on one line, Vent on another line (Teed in with the transfer case vent) and the last line goes to the axle interlock actuator. The vacuum line starts at a connection at the rear of the engine under the distributor. Then down to the switch. The interlock should pull in when vacuum is applied to it. If the actuator isn't moving you have a vacuum problem.
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Friday, December 12th, 2008 AT 11:55 PM
Tiny
MEECHIE25
  • MEMBER
  • 5 POSTS
It is elec. I push the button and it lights up for about 5 seconds and then it shuts off? Do you know if the manual case will work with the l60E trany? I thought about changing it. By the way thanks for the info its appreciated
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Saturday, December 13th, 2008 AT 2:28 AM
Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Sounds like the encoder motor has a problem. It is possible to check it if you have the book. The test is a lot to type out.

Yes the manual box from a 83 up S series will bolt in. They used the same trans and parts. The only real difference is the actuator method.
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Sunday, December 14th, 2008 AT 10:37 AM
Tiny
MEECHIE25
  • MEMBER
  • 5 POSTS
Cool I will check it out thanks
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Sunday, December 14th, 2008 AT 2:45 PM

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