Chevy transfer case
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=148370
Printed Date: 07 May 2024 at 11:38pm
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Topic: Chevy transfer case
Posted By: darrel in ND
Subject: Chevy transfer case
Date Posted: 10 Mar 2018 at 5:04pm
| I have a question for any GM mechanics. On my 01 suburban, the transfer case is sort of stuck in a neutral position. It won't go into 4 wheel drive or 2 wheel drive. If I hit the button for 2 wheel drive, the light by that button will blink for about 5 seconds, then nothing. If I hit the 4 wheel drive button, light by it does the same thing. Suburban won't move. If I try to put it into park, after trying drive, transmission will grind. The "service wheel drive" message shows up on the message center. There were a few times in the past six months that it didn't want to change from 2 wheel to 4 wheel quite like it should have, and that message showed up then, too. But shutting it off, and starting it back up cleared the message. Is my whole transfer case going to be toast, or is there a shifting solenoid that may be the culprit...? Any advice appreciated, Thanks. Darrel |
Replies:
Posted By: Jim.ME
Date Posted: 10 Mar 2018 at 6:54pm
| I had to change the switch unit in my 2007 2500. It would blink similar to what you describe when I tried to go into 4 wheel drive low. It would still go in two wheel drive and 4 wheel high. Parts guys here said the switch failing is a common problem. |
Posted By: Dakota Dave
Date Posted: 10 Mar 2018 at 6:55pm
| Most likely its the shifting encoder its on the Left side of the transfer case has three bolts and one electric connector. on some vehicals you need to take the front drive shaft off to get one of the bolts. the control module the part in the dash is the only other part in the system. its cheep and easy to change the encoder is more expensive and you need to get under it to replace it. I did my wifes just pushing it up on ramps with the tractor. it took a couple hours. |
Posted By: truckerfarmer
Date Posted: 10 Mar 2018 at 9:24pm
|
X2 on the switch. ------------- Looking at the past to see the future. '53 WD, '53 WD45, WD snap coupler field cultivator, #53 plow,'53 HD5B dozer Duct tape.... Can't fix stupidity. But will muffle the sound of it! |
Posted By: HudCo
Date Posted: 10 Mar 2018 at 9:31pm
| a good scaner wil show you the voltages in and out of the endcoder motor and also the shift state if it checks out its probley the dash switch . we just done a 2003 avalanche about three weeks ago that the guy said it whent into low going down the hiway but it really didnt . but i did have it get stuck into nuetral in front of the shop our fix was the dash switch |
Posted By: im4racin
Date Posted: 11 Mar 2018 at 6:23am
| Try dash switch. It's cheaper and easier! |
Posted By: darrel in ND
Date Posted: 11 Mar 2018 at 7:15am
| Thanks for all of the replies, guys. I am breathing a little easier now that I reletivly sure that it's not something that's going to require a whole transfer case rebuild or replace. Darrel |
Posted By: Coke-in-MN
Date Posted: 11 Mar 2018 at 11:16am
|
Neighbors 4x4 chev - dealer repair $700 , modual, hoses , tear into fron axle and transfer case + replace switch Friend who owns transmission shop - replace switch on customers 4x4 - $70 Mine replace switch $34  ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: JoeO(CMO)
Date Posted: 11 Mar 2018 at 11:26am
|
With a 2004 2500HD, I was getting a "service 4WD" message on the instrument panel, when trying to go to low, 4wd, 2wd, along with AC, blower controls, and others, 5 electrical items getting power from Ignition switch. A large diagnostic bill with $35 switch got me running. Wish this information were released sooner.
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Posted By: Coke-in-MN
Date Posted: 19 Mar 2018 at 7:39pm
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the info has been on here couple years or longer - mine went bad around 2007 on my 2000 GMC - but then the transfer case itself went out at 3,000 miles - seems there were a bunch from the factory they set up wrong and so I got a replacement unit back then - 4 days down while they shipped one in - problem was it went out while i was plowing ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Gordy
Date Posted: 19 Mar 2018 at 8:01pm
|
Dash switch on my 01 Silverado was bad I found it had bad solder connections on some of the pins in the circuit board inspect it with a magnifying glass and you will see hairline cracks re solder them and works like a new one. ------------- “If you can't explain it simply, you don't understand it well enough” |
Posted By: thendrix
Date Posted: 20 Mar 2018 at 3:44pm
|
My 06 did something similar and mine was the encoder. I bought one from a junk yard for $200 instead of $400 or $600 (don't remember which) and mine has been fine for 3 or 4 years now ------------- "Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan |
Posted By: alan-nj
Date Posted: 21 Mar 2018 at 1:11pm
|
Had a 2005 Silverado....not sure if it applies to 01 or not, but a common shifting problem with them was a bad ground. Look for a grounding bolt on the frame rail on the left side approximately under the driver's door. Clean all the connections on it and see what happens. ------------- If ignorance is bliss, than happy days are here again. |
Posted By: Brian Jasper co. Ia
Date Posted: 21 Mar 2018 at 8:12pm
|
Switches were common problems, so were encoder motor sensors. The sensor is quite a bit cheaper than the whole motor assy and are easy to replace. ------------- "Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford |
Posted By: darrel in ND
Date Posted: 21 Mar 2018 at 9:44pm
| I'm getting a little nervous. I took this burb into the local service station/repair shop over a week ago. Told him what was wrong with it, and told him that I was relatively certain it wasn't going to need a complete transfer case. I don't see it outside in the "done" row yet. Darrel |
Posted By: Macon Rounds
Date Posted: 21 Mar 2018 at 10:45pm
|
If you need a new T case.Transfer Case Unlimited 800-683-7623 They will exchange yours for around $1200 I have been very happy with mine. They install new front and rear housings with the pump upgrade. ETC ...... Good Quality T Case ... with warranty. Do NOT get yours rebuilt. GM OEM case has several inherent issues, especially after they get a few miles on it. IMO ------------- The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate |