Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Chevrolet > Avalanche | C&K | Silverado | Suburban | Tahoe > Tahoe
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools Search this Thread
Old 11-11-2019, 10:58 AM   #1
jjwg3
AF Newbie
 
Join Date: Dec 2003
Location: Glenview, Illinois
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
2003 Tahoe Transfer Case starts in N/4LO

My 2003 Tahoe with the NP8 Transfer Case seems to be having trouble. It first had pump rub and sprung a leak so I got that changed out. Now whenever the truck is started the 4 button selector switch reverts to either Neutral or 4 LO. I can use the buttons to manipulate it back to 2WD and everything works and drives fine. Next time I start the truck, back to N or 4LO. It seems so odd because it never makes any noise going into 4LO, but you can sure hear the commotion coming back out of it and getting to 2WD.

Would this be the actuator motor? It doesn't seem like its the 4 button switch as they all light up on start up and they all seem to work to do what they are intended to. But shut the truck off and it's back to the beginning.

Thanks for any input, John
jjwg3 is offline   Reply With Quote
Old 11-11-2019, 03:22 PM   #2
777stickman
AF Enthusiast
 
Join Date: Jan 2004
Location: Maybe, California
Posts: 1,853
Thanks: 6
Thanked 91 Times in 90 Posts
Re: 2003 Tahoe Transfer Case starts in N/4LO

I would be inclined to suspect the T-Case Control Module as the motor seems to do as commanded.
__________________
57 Chevy 210
65 Olds 442 Convertible (Another one sold)
75 GMC Vandura 3/4 Ton
1999 K2500 Old Body Style Suburban (Gone but not forgotten)
05 Dodge Ram 3500/5.9 Cummins
2012 Toyota FJ Cruiser
777stickman is offline   Reply With Quote
Old 11-12-2019, 08:11 AM   #3
jjwg3
AF Newbie
Thread starter
 
Join Date: Dec 2003
Location: Glenview, Illinois
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 2003 Tahoe Transfer Case starts in N/4LO

That makes sense. I'm thinking that's under the dash. I'll start looking into that. Looks like a couple hundred dollar part, not so bad if that would take care of it.
jjwg3 is offline   Reply With Quote
Old 11-12-2019, 10:20 AM   #4
aleekat
AF Enthusiast
 
Join Date: Dec 2001
Location: clarksville, Tennessee
Posts: 1,415
Thanks: 6
Thanked 147 Times in 143 Posts
Re: 2003 Tahoe Transfer Case starts in N/4LO

In my older Chevy Blazer it was under the passenger knee/foot panel. I'd be checking for a used one first.
__________________
Post back, that's what makes Forums Work.
aleekat is offline   Reply With Quote
Old 11-13-2019, 09:34 AM   #5
jjwg3
AF Newbie
Thread starter
 
Join Date: Dec 2003
Location: Glenview, Illinois
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 2003 Tahoe Transfer Case starts in N/4LO

Used does sound like a cash saver...
jjwg3 is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > Chevrolet > Avalanche | C&K | Silverado | Suburban | Tahoe > Tahoe

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



All times are GMT -5. The time now is 09:36 AM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts