SPONSORED LINKS

Four wheel drive will not stay engaged after replacing the encoder motor

Tiny
11997Z71
  • MEMBER
  • 1997 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 260,000 MILES
I changed the encoder motor it worked fine for two days, now the four wheel drive will engage but in a minute or two the the TCCM will click a few times and the indicator lights will flash back and forth then go into 2hi. I can put it back into 4hi and it will work for a bit longer before wigging out again. After a few times of this the TCCM will give up and leave it in 2hi and the push buttons do not work until I pull the tcase fuse and reset the TCCM.
SPONSORED LINKS
Monday, December 12th, 2016 AT 7:23 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check ground leading to encoder motor may be bad. Also, when you connect connector put dielectric grease there for better contact.
Was this
answer
helpful?
Yes
No
Monday, December 12th, 2016 AT 7:47 AM
Tiny
11997Z71
  • MEMBER
  • 2 POSTS
Codes are number one and number two sometimes just number two. I put dielectric grease on all connections and tested voltage and ground at encoder motor. Just for fun I have tried a different tccm and dash switch achieving no change in the problem.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, December 12th, 2016 AT 2:17 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is no code one or two. It is probably twelve so it means it is working okay. Check harness and have a mechanic check it. This may be an internal problem if not staying in gear.
Was this
answer
helpful?
Yes
No
Monday, December 12th, 2016 AT 3:16 PM

Please login or register to post a reply.

Related Transfer Case Actuator Replace/Remove Content

VIEW MORE

Sponsored links