4Hi not working
#1
4Hi not working
Hi evreyone
I was wondering if anyone could help me with a 4wd problem I have.
It's a 2001 Blazer with 3 button switch, 4x4 stop working a while back,
I managed to reset it once by disconnecting the battery and now, no lights on the switch light up, they do light up once i start it but go out after a second. if I put the truck in neutral I can shift to 4Lo and it ingages but not 4hi, I have since found that the actuator under the battery tray was on constant vacuum so i changed the vacuum switch on the T/case that was jammed, but still no lights and no 4Hi, you can hear the encoder motor shifting when the trucks in neutral but nothing works when in drive , I've tried a Tccm and a switch from a scrap yard and it's the same thing.
My question is; Could it be the encoder motor that's bad even though I'm able to shift to 4Lo, possibly it's not able to sense the 4Hi position and therefore not completing the shift,
Any help is appreciated
Thanks !!
I was wondering if anyone could help me with a 4wd problem I have.
It's a 2001 Blazer with 3 button switch, 4x4 stop working a while back,
I managed to reset it once by disconnecting the battery and now, no lights on the switch light up, they do light up once i start it but go out after a second. if I put the truck in neutral I can shift to 4Lo and it ingages but not 4hi, I have since found that the actuator under the battery tray was on constant vacuum so i changed the vacuum switch on the T/case that was jammed, but still no lights and no 4Hi, you can hear the encoder motor shifting when the trucks in neutral but nothing works when in drive , I've tried a Tccm and a switch from a scrap yard and it's the same thing.
My question is; Could it be the encoder motor that's bad even though I'm able to shift to 4Lo, possibly it's not able to sense the 4Hi position and therefore not completing the shift,
Any help is appreciated
Thanks !!
#2
Have you checked the codes? There is a tech article discussing the process for reading the codes on the NV233 transfer case that your truck is equipped with.
Did you check the connector at the TCCM for corrosion?
Did you check the connector at the TCCM for corrosion?
#4
Thread
Thread Starter
Forum
Replies
Last Post
mjw1991
2nd Generation S-series (1995-2005) Tech
2
02-24-2013 10:18 PM
bertrenolds
Steering, Suspension & Drivetrain
1
12-16-2012 08:16 PM