4WD stuck in 4LO all known components have been replaced with new or Reman

10

Asked by Dec 02, 2014 at 11:01 PM about the 2001 Chevrolet Silverado 1500 LS Extended Cab SB 4WD

Question type: Maintenance & Repair

2001 Chev silverado, Dealer installaed  new encoder motor and sensors. certified  
service shop installed reman transfer case, I installed selector switch and reman
Transfer Case Control Module.   What's next?  I've had intermittent problems after
switch, encoder motor, and transfer case were installed.  I put in TCCM today and it
seemed to work fine until I put it in 4LO.... Now it's stuck in  4 Low... I think it's a
sensor problem or possibly a ground wire that I can't find.

5 Answers

435

GMC Sierra 1500 Problem 64 Reports Me Too GMC 1500 Problem - Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2012. Drive Trains Affected: 4WD, Automatic Transmission; check Transfer Case control module sensor and/or 4WD transfer case encoder motor position sensor, and/or the selector switch. Sounds like the dealership has replaced all the big, expensive parts, now on to the little sensor bits. Wish I could be more specific and good luck.

2 of 2 people found this helpful.
10

Since all work is recent and should be covered under warranty, I will have them check the sensors. The dealer said that they put new sensors in with new encoder motor... Thanks and I'll see what they say. It will probably take them a week to schedule my truck.

10

Started truck this morn. no 4WD SVC light. It took several attempts and finally went to 4HI, then was able to switch to 2HI. I think there is something wrong with the encoder motor sensors or possibly the wiring harness... I will post more when I find out. I'm still open for suggestions.

1 of 1 people found this helpful.
10

Dealership is replacing the encoder motor and sensors under warranty. No other known culprit.

10

The encoder motor and sensors were replaced without charge today, and all is working well. It's not normal for encoder motors to fail. The clutches were worn out on the transfer case at 170,000 miles. 1st Ck ATC fuse under the hood, then 4WD fuse left side of dash, replace selector switch, differential actuator motor, transfer case control module, encoder motor and sensors. Before replacing expensive stuff pay to have dealership decode the errors and go from there.

Your Answer

Add photo

Related Questions

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 182,800 nationwide Silverado 1500 listings starting at $999.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,440
#2 Rowefast
Rowefast
Reputation 1,950
#3 tenspeed
tenspeed
Reputation 1,650
View All

Related Models For Sale

Used GMC Sierra 1500
790 Great Deals out of 68,235 listings starting at $1,800
Used Ford F-150
2,086 Great Deals out of 191,509 listings starting at $290
Used Dodge Ram 1500
405 Great Deals out of 10,890 listings starting at $1,000
Used Chevrolet Silverado 2500HD
303 Great Deals out of 28,743 listings starting at $2,995
Used Toyota Tundra
447 Great Deals out of 34,302 listings starting at $1,950
Used Toyota Tacoma
562 Great Deals out of 42,404 listings starting at $1,995
Used Chevrolet Tahoe
598 Great Deals out of 33,193 listings starting at $1,375
Used Chevrolet Camaro
373 Great Deals out of 31,271 listings starting at $2,500
Used Ford F-250 Super Duty
326 Great Deals out of 43,864 listings starting at $1,450
Used Chevrolet Silverado 2500
9 Great Deals out of 257 listings starting at $3,495
Used Chevrolet Silverado 1500HD
10 Great Deals out of 286 listings starting at $3,995
Used Ford Mustang
689 Great Deals out of 44,321 listings starting at $1,500

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
295 Great Deals out of 125,297 listings starting at $20,589
2016 Chevrolet Silverado 1500 For Sale
150 Great Deals out of 5,760 listings starting at $17,900
2015 Chevrolet Silverado 1500 For Sale
235 Great Deals out of 8,510 listings starting at $12,950
2014 Chevrolet Silverado 1500 For Sale
260 Great Deals out of 10,284 listings starting at $9,798
2013 Chevrolet Silverado 1500 For Sale
155 Great Deals out of 4,977 listings starting at $8,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.