Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
|
Show Printable Version | Email this Page | Subscribe to this Thread |
|
Thread Tools |
03-01-2018, 11:56 PM | #1 | |
AF Newbie
Join Date: Mar 2018
Location: Canton, Ohio
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
|
99 silverado z71 stuck in 4wd
I have A 99 silverado and it is stuck in 4wd when I hit the 2wd switch it blinks and I can hear clicking then goes back to 4wd and also when I hit the button I can hear the t case shift motor trying to switch over but just goes back to 4wd does anyone have any ideas or advice on what it could be I would appreciate it thank you
|
|
03-02-2018, 09:31 AM | #2 | |
AF Enthusiast
Join Date: Jan 2004
Location: Maybe, California
Posts: 1,860
Thanks: 6
Thanked 92 Times in 91 Posts
|
Re: 99 silverado z71 stuck in 4wd
Most common cause is the encoder motor.
__________________
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 |
|
03-03-2018, 11:27 PM | #3 | |
AF Newbie
Thread starter
Join Date: Mar 2018
Location: Canton, Ohio
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: 99 silverado z71 stuck in 4wd
OK thank you I will swap it out tomorrow
|
|
03-04-2018, 07:55 AM | #4 | |
Registered Offender
Join Date: Mar 2006
Location: Rural
Posts: 6,548
Thanks: 7
Thanked 345 Times in 340 Posts
|
Re: 99 silverado z71 stuck in 4wd
Instead of just replacing it, remove it from the side of the case and see if it will move. Then see it the shaft on the case will move, and how easily it turns. The vehicle may have to be in neutral with the wheels free to rotate to shift the case, as in elevated on jack stands or a lift. Align the shaft to the motor before assembly.
__________________
Permanent seat assignment on the Group W bench... Automotive Forums Survival Guide |
|
03-04-2018, 08:25 AM | #5 | |
AF Fanatic
Join Date: Oct 2007
Location: EVERETT, Massachusetts
Posts: 10,898
Thanks: 8
Thanked 432 Times in 431 Posts
|
Re: 99 silverado z71 stuck in 4wd
since it does try to move did you check the T case fluid level and condition ? these do leak because of a manufacturing defect very common rub inside the T case then it leaks .
fluid needs replacing @40K miles . then if that is good the codes should be pulled GM drive train capable scanner then this will reveal what is the issue most times. to replace the encoder as was mentioned lifting the wheels off ground to install is some times required. encoders come in the neutral position so the fork in T case may require to be rotated to align .. the encoder will not rotate because it is always locked unless the lock has power to it then it releases .. |
|
|
POST REPLY TO THIS THREAD |
Tags |
chevy , silverado |
|
|