4 wheel drive wont work - Blazer Forum - Chevy Blazer Forums
Search

Search

Closed Thread
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-20-2011, 03:05 PM
Beginning Member
Thread Starter
 
Join Date: Jan 2011
Posts: 11
wintfam@olemac.net is on a distinguished road
Default 4 wheel drive wont work

I hit button dash on my 97 s10. Hear clicking noise by transfer case but 4x4 will not engage. light on 4h indicator goes on but front end will not engage. Help!! stuck in snow in arkansas.
Thank you
  #2  
Old 01-20-2011, 03:20 PM
Starting Member

 
Join Date: Apr 2009
Location: Parkersburg, WV/Morgantown, WV
Posts: 185
jbsnowboarder16 is on a distinguished road
Default

Have you checked the actuator under the battery? It may have a rip or hole and thus it won't pull the cable to engage the front end.
  #3  
Old 01-20-2011, 03:29 PM
Beginning Member
Thread Starter
 
Join Date: Jan 2011
Posts: 11
wintfam@olemac.net is on a distinguished road
Default Ty

Ill go check it right now. Thanks for the suggestion!!
  #4  
Old 01-20-2011, 04:10 PM
Beginning Member
Thread Starter
 
Join Date: Jan 2011
Posts: 11
wintfam@olemac.net is on a distinguished road
Default

I found the actuator after taking battery and battery base out. How do I test the actuator? I do n
  #5  
Old 01-20-2011, 04:13 PM
Beginning Member
Thread Starter
 
Join Date: Jan 2011
Posts: 11
wintfam@olemac.net is on a distinguished road
Default

Sorry, sent before i could write that I do not have vacuum tester. Thank you.
  #6  
Old 01-20-2011, 04:45 PM
Starting Member

 
Join Date: Apr 2009
Location: Parkersburg, WV/Morgantown, WV
Posts: 185
jbsnowboarder16 is on a distinguished road
Default

Reconnect the battery, and have someone push the 4hi button while you watch the actuator, i know it is difficult to get the battery reconnect while out of its "home. It should contract and pull the cable about 1/2 to 3/4 of an inch. Or you can disconnect the cable pull it as far as you can, then lock it off with vice grips, then drive it around to see if you have 4wD
  #7  
Old 01-20-2011, 08:18 PM
old skool luvr's Avatar
BF Guru

 
Join Date: Sep 2009
Location: GTA, Ontario, CANADA
Posts: 5,156
old skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of light
Default

there's a far easier way to check it.


1) pull the vacuum hose off of it.
2) compress the diaphram & hold.
3) place finger or thumb over the nipple that you removed the vaccum line from, and hold firmly in place.
4) release the diaphram.

if the diaphram springs back out ('cause there's a big spring inside it) then there is a hole/tear somewhere in the rubber.

could be a hose has come off somewhere in the t-case vacuum system.

could also have a bad vacuum switch on the t-case. start the truck & see if there is any vacuum coming from the hose @ the diaphram.



hope this helps you out some.
  #8  
Old 01-22-2011, 05:03 PM
Beginning Member
Thread Starter
 
Join Date: Jan 2011
Posts: 11
wintfam@olemac.net is on a distinguished road
Default 4x4 wont work

So I tested pin13 and actuator. Actuator held vacuum and the cable to transfer case moved 1/2 inch when i pulled on it. Pin 13 had flashed once every 3 seconds on 4h and 4l button. I pulled trans fuse and let it sit before putting fuse back in and turning key on 5 times. Is there easy way to test vacuum to actuator. I found switch next to actuator cable on transfer case. It looks to have electrical connection. Where is vacuum switch. Was told it was on transfer case but I could not find it.
Thanks
  #9  
Old 01-22-2011, 05:54 PM
old skool luvr's Avatar
BF Guru

 
Join Date: Sep 2009
Location: GTA, Ontario, CANADA
Posts: 5,156
old skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of lightold skool luvr is a glorious beacon of light
Default

there is no cable that runs back to the t-case. the cable runs from the vacuum diaphram under the battery, to the front diff.

if you're thinking there is an issue with the vacuum supply, you can read through THIS.

it'll make it much easier than reposting something that is already out there.

 
 
Closed Thread

Related Topics
Thread Thread Starter Forum Replies Last Post
Does front drive shaft turn on 86 K-5 when not in 4 wheel drive? lizzj70 Steering, Suspension & Drivetrain 2 06-23-2010 07:57 PM
2 wheel drive/4 wheel drive light goes out mirrorimij 2nd Gen S-series (1995-2005) Tech 1 02-24-2010 09:20 PM
4wheel drive wont work diceman721 Steering, Suspension & Drivetrain 1 10-25-2009 07:53 PM
4 wheel drive wont work jhill133 2nd Gen S-series (1995-2005) Tech 7 03-29-2007 10:02 PM
4 Wheel Drive does not work. Help!!! huskerman18 General Tech Help 3 10-19-2006 02:02 PM


Tags
350, 4wheel, 4x4, 78, 90, 95, blazer, cable, chevy, drive, engage, off, suburban, wheel, wont

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 03:39 AM.