Last post on Oct 07, 2012 at 6:55 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma
What is this discussion about?
Chevrolet S-10, Truck
#49 of 58 Re: 4wd acting up [440bigblock]
Nov 16, 2011 (6:22 am)
Can I get a better understanding of your vehicle concern? What year/model is your vehicle?
GM Customer Service
#50 of 58 @ gmcustsvcsarah
Nov 16, 2011 (7:38 am)
i am having the same issue my truck is a 2000 gmc sonoma 4.3L v-6 extended cab 3 button 4wd
got it to work for a while unhooking by my battery cable and reconnecting it would temporarily fix the issue but now nothing works and i have no 4 hi goes to 4 low with no problems
#51 of 58 Re: @ gmcustsvcsarah [gmfanatic]
Nov 16, 2011 (11:57 am)
Thank you for getting in touch with me, gmfanatic,
Our primary diagnoses are performed at our dealerships, and so I would recommend an appointment at your preferred dealer. We could look into your vehicle's information to see what we can learn, if you like. Please email us the last 8 numbers of your VIN along with your name/user name and contact information.
GM Customer Service
#52 of 58 Re: 4wd acting up [kraigncharity]
Nov 20, 2011 (7:35 pm)
Hey: Did you ever find out what the problem was. I have a 2003 S10 and exactly the same thing just happened. Let me know if it was fixed.
#53 of 58 My Sonoma , GMC 2001 4x4 not engageing
Dec 12, 2011 (5:29 pm)
My truck has the exact problem as this person #38
Problem: 4Hi and 4Lo won't engage, Low xfer case engages but front wheels don't.
Symptoms: When I bought this truck used I noticed that after engaging 4Hi
there was a vibration around 50-65mph. After 20-30 miles the vibration would
Didn't use 4Hi/4Lo for quite a while.
After recent snow storm when I tried to use 4Hi. Upon disengaging there was
an oscillating vibration that would lower in frequency until stopping front
wheels. When accelerating noise is not heard, only when coasting or decelerating. At this time the vehicle was out of 4wd. Vibration did not go away after 20-30 miles.
Just the other day after another snowstorm, I tried the 4Hi/4Lo and it won't
engage 4WD only low range. I get ONLY a click for 4Hi and a click and a clunk
for 4Lo. Seems as though I get the low range but the front axle won't engage.
When engaging the 4Hi and traveling 5-10 miles I heard an occasional couple of knocking noises from what appears to be the right front wheel/hub. Pressing 2Hi button stops these random knocking noises.
The lights corresponding with the buttons on dash work properly i.e. 4Hi lit
when 4Hi pressed and 4Lo lit when 4Lo pressed, 2Hi lit when 2Hi pressed.
What suggestions does anyone have and what should I check for?
#54 of 58 My Sonoma , GMC 2001 4x4 not engageing by jjflynn71
Dec 12, 2011 (8:23 pm)
under the battery tray there is a actuator that pulls the front deferential into gear.. check the vacuum lines to the actuator and the cable from it .. sounds like that seems to be your problem
#55 of 58 Re: @ gmcustsvcsarah [gmfanatic]
Dec 13, 2011 (5:04 am)
update replaced my encoder(transfer-case shift motor) again now all is well everything works
#56 of 58 Transfer Case will not go back into 2X4
Jan 11, 2012 (5:25 pm)
My problem seems to be unique. My 98 S10 will go into 4 wheel high or low with no issues under any condition. However, it will not go back into 2 wheel drive unless the trauck has sat and cooled. Then, at that point it will go right back in. Any ideas?
#57 of 58 Truck wants to disengage out of 2wd, i think.
Mar 25, 2012 (9:43 pm)
I have a 2003 ZR2, when i get on the freeway and get above 65mph after about 5 min. i will here a high pitch whine and when i start to slow down and pull over the whine gets louder and sounds more like a grinding sound but then i will hit the 4hi button and the grinding stops so i just keep driving down the freeway for a few seconds and hit the 2hi button and it goes back into 2hi and i don't here the whine anymore until i get about 1 mile down the highway it starts whining again and i have to hit the 4hi button again to make it stop. Am i loosing vacuum? is something trying to disengage? i have a brand new vacuum actuator and 4 wheel drive works great when i need it but even before the old actuator went bad i had this problem with the truck wanting to disengage while driving on the freeway.help.
#58 of 58 Re: Truck wants to disengage out of 2wd, i think. [onewackycamper]
Oct 07, 2012 (6:55 pm)
Hi did you ever get a answer to this problem? I have the same problem with my2002 ZR2. Can you or anyone else help?