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4 wheel drive will not engage

Replaced 4 button switch front dif actuator and transfer case motor when 4 hi button pushed just blinks seems like no power to front actuator even though new one installed

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2007 Dodge Ram 1500 hemi my 4 wheel drive does not engage after turning the switch to 4 wheel high or low I hear clicking under vehicle but does not engage


Remove the actuator motor assembly from the transfer case and try to manually engage the transfer case, if it is easy to engage then the actuator is the problem.

Jan 09, 2017 | Dodge Cars & Trucks

2 Answers

4wheel drive not engaging replaced actuator on front dif.can hear it engaging and TCM is also making a noises when pushing shift buttons lights flash on buttons


Diagnosing a 4WD Problem - YouTube

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https://www.youtube.com/watch?v=u1-qaj2A3_I
Jan 4, 2014 - Uploaded by The Auto Rules
2004 Chevy Colorado, 4x4 on hi works but low is not working , it just blinks ... when I push four wheel drive it blinks seven eight nine times and then it .... on my 1999 silverado 1500 z71 but mytruck still says in 4 hi or 4wd auto ...

Step by Step Troubleshooting 4wd 4x4 88-98 Chevy GMC ...

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Step by Step Troubleshooting 4wd 4x4 88-98 Chevy GMC Truck..... have a 95 k1500 z 71 the front drive shaft turns but no power going to tires,what is the ... Mine is acting like it is NOT pulling with the fronts, won't engage.

4WD Transfer Case Position Sensor/Selector Switch May ...

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Log In · Sign Up · < Chevrolet Silverado 1500 Problems .... Chevrolet Silverado1500. transfer case selector switch doesn't light up won't go in four wheel drive.

4WD not engaging ' Chevy Truck Forum ' GM Truck Club




Jan 25, 2016 | Chevrolet Silverado Cars & Trucks

1 Answer

Is there an electric or vacuum switch on a 2001 chevy blazer


There are 2 models here the push button will flash if the system is not engaging or disengaging properly . If front drive shaft is turning. That is with car raised and supported . if front drive axles do not turn then the axle actuator is not engaging axle shaft passenger side. Remove actuator and manually engage shifting collar with a screwdriver still does not turn then inner axle is twisted.

Mar 21, 2014 | 2001 Jeep Grand Cherokee

1 Answer

2002 Silverado 1500 push button 4 wheel drive issue Light will light showing it is in 4 wheel drive but it is not. Auto button seems to work though.


2 speed electric shift transfer case problems #1 jack up truck place on 4 jack stands. Start and select 4 high position in drive release brake ad watch front driveshaft does it turn "yes" problem is axle actuator on passenger side of differential not engaging axle shaft. "no" apply brakes bring to a stop engage low range does low range work "yes" internal transfer case problems "no" electric transfer case shifting motor failure.

Oct 26, 2013 | 2002 Chevrolet Silverado 1500

2 Answers

Every time i push the button for the four wheel hi it makes the click noise in the front but DOES NOT ENGAGE. only the back tire spins


Depending on the year, it is not posted, it may be a bad transfer case motor. The clicking you are hearing is the motor trying to engage transfer case & front axle. It looks like a windshield wiper motor & when it gets power & works properly it engages front wheels. Again, depending on the year, may be 4 wheel drive actuator or switches bad on front axle or transfer case.

Jan 17, 2011 | GMC Jimmy Cars & Trucks

1 Answer

04 Trailblazer LS won't go into 4WD. Front hubs don't engage with switch in cab. It will gear down to 4wd Lo but front wheels won't engage. Please help. Can't afford the dealer!


What do the lights on the 4x4 selector switch do when you switch to A4WD or $HI or 4LO positions? Do they blink and revert to previous selection? Has the Transfer Case fluid been changed at 50K intervals?
There are actuators on the Transfer Case and Front Differential that control the application of power to the front wheels. These actuators are controlled by the TCCM (Transfer Case Control Module). It takes a qualified 4 wheel drive technician to diagnose these systems.

Jan 09, 2011 | 2005 Chevrolet TrailBlazer

2 Answers

Front axle does not engage. Push 4hi or 4lo button, transfer case motor engages front drive shaft, front diferential actuator extends, but no 4 wheel drive. What do I check next?


There may be vacuum lines running down to the hubs. If so check them for vacuum when engaging and dis-engaging 4 wheel. If you can't feel any vacuum, trace lines, and check for leaks.

Dec 13, 2010 | 2002 Chevrolet Silverado 1500HD

1 Answer

4x4 push button is not working about how much does


This is something you can do yourself if you have ever worked on a vehicle before. The part you need is called a front drive actuator valve. It costs about $ 50.00, GM part # 15165891.
Here is some more infor about it:

Main 4wd Components:
TCCM
- Transfer Case Control Module - Located behind the glove box. This is the electronic 'brains' behind the shifting.
Switch - The push button switch in the dash - driver input/indicator.
Encoder Motor - Located on the transfer case - This is what actually shifts the transfer case, and tells the TCCM what position it is in.
Vacuum Switch - Also located on the transfer case - This is what sends vacuum to the vacuum actuator (see below) when the transfer care is in 4HI or 4LO.
Vacuum Actuator - Located under the battery tray - This is what engages or disengages the front driveshaft.
Front Axle Switch - Located on the front axle - This is what tells the TCCM when the front axle is engaged.

If you want to try and replace it yourself, please let me know how it goes.

Feb 11, 2010 | 1998 GMC Jimmy

2 Answers

My 1999 chevy silverado 1500 four wheel drive won't engage. The truck is in 2wd now. When I push 4wd hi or low, I can hear the actuator try to engage the four wheel drive. The four hi or low button will...


You probably have a bad encoder motor.It is located on the side of the transfer case on the drivers side.It is black.The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor.Hope this helps.Good luck.

Dec 28, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

Front drive, 4 Wheel drive won't engage


that vacume line goes back to the transfer case, the end that goes behind the motor hooks to a steel tube so it does not get hot from the exhaust., my guess it should be hooked up so it will feed vacume to the vacume ball so it can lock in the axels. if you start the car and shift into 4 wheel drive and listen under hood you should hear a hissing sound, that is vacume, if you can't hear it there, you may have to craw under the right side to hear it, probably came unhooked underneith the car

Feb 01, 2009 | 1995 GMC Jimmy

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