4 wheel drive not working

Tiny
NORMAN KASINGER
  • MEMBER
  • 1997 CHEVROLET 1500
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
Actuator going in and out 4low when it is in 2WD.
Friday, November 16th, 2018 AT 1:11 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

It sounds like the encoder motor is going out. Here are instruction and diagrams to help you replace it below:

INSTALL OR CONNECT
1. Any gasket material remaining from the motor/encoder.
- New motor/encoder should have a new gasket attached.
2. Four bolts securing the motor/encoder to the transfer case.
- Ensure the motor/encoder aligns properly with the transfer case interior shifting components.
- Align the motor/encoder mating surface detents with the transfer case mating surface detents.
- Tighten motor/encoder bolts to 25 N.M (18 lb ft).
3. Wiring harness connectors to the motor/encoder.
4. Transfer case shield.
5. Negative battery cable.
6. Perform a functional test on the electronic shift select system to test the motor/encoder.

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
Was this
answer
helpful?
Yes
No
+2
Friday, May 14th, 2021 AT 11:19 AM
Tiny
NORMAN KASINGER
  • MEMBER
  • 5 POSTS
Okay thank you. So it is the actuator?
Was this
answer
helpful?
Yes
No
+2
Friday, May 14th, 2021 AT 11:19 AM
Tiny
NORMAN KASINGER
  • MEMBER
  • 5 POSTS
Okay, I have a 1999 Suburban will the parts interchange?
Was this
answer
helpful?
Yes
No
Friday, May 14th, 2021 AT 11:19 AM
Tiny
NORMAN KASINGER
  • MEMBER
  • 5 POSTS
And I see now what you were talking about. Thank you
Was this
answer
helpful?
Yes
No
Friday, May 14th, 2021 AT 11:19 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It should work if the parts numbers are the same. Please let me know how it goes.
Was this
answer
helpful?
Yes
No
Friday, May 14th, 2021 AT 11:19 AM

Please login or register to post a reply.

Sponsored links