4X4 not working

Tiny
JCR123
  • MEMBER
  • 1995 CHEVROLET 1500
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 1,234,567 MILES
I have replaced the front actuator and the shift sensor on the transfer case. As soon as I turn the key on my 4 wheel drive engages even with the floor selector in 2wd. Please help.
Wednesday, September 16th, 2020 AT 8:21 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Hi,

Does the floor shifter feel like it has the normal resistance? I have to be honest, that is a mechanical shifter and there isn't a lot to go bad. Have you checked the linkage between the shift lever and the transfer case?

Here are directions for adjusting the shift lever linkage for the transfer case. The attached pic correlates with the directions.

__________________________

1995 Chevy Truck K 1500 Truck 4WD V8-350 5.7L VIN K TBI
Shift Linkage Adjust
Vehicle Transmission and Drivetrain Transfer Case Adjustments
Fig. 1 Shift Linkage Adjustment

See pic 1

1. Place shift lever in the 4 HI position.
2. Raise and support vehicle, then disconnect linkage rod from console shift lever.
3. Shift transfer case into 4 HI position. Lever should be in full forward detent, Fig. 1.
4. Adjust swivel to align with hole in console shift lever.
5. Install linkage rod into shift lever.

_______________________

Let me know if that helps.

Joe
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Friday, May 14th, 2021 AT 11:19 AM
Tiny
JCR123
  • MEMBER
  • 2 POSTS
I checked shift lever linkage and it's adjusted properly. The lever itself transitions good. I can feel every detent. I still have power to the front axle actuator as soon as I turn on my key. How does the switch on the transfer case work? Is it possible I got a bad switch?
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Friday, May 14th, 2021 AT 11:19 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Hi,

It's possible that the switch is bad. Have you checked the transfer case relay? It's located in the rear of engine compartment near center of cowl. See the attached pic.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know.
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Friday, May 14th, 2021 AT 11:19 AM

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