4X4 will not engage
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New User
Joined: Jun 2009
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4X4 will not engage
I have a 2002 Excursion with the manual locking hubs plus the shift switch inside the truck. When I attempt to switch from 2wd to 4Hi, I hear no engagement of the drive nor do I see a visual confirmation with color showing on the switch that it is even working. I checked the fuses and those are good, so any other ideas that I can try would be greatly appreciated. Help....
Elder User
Joined: Oct 2007
Posts: 783
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From: Nova Scotia
If you are switching to 4Hi and there is no light coming on in the dash cluster indicating 4Hi, then your transfer case shift motor is likely bad.
They are known to fail on these trucks... I replaced mine last year and had the new one fail on me this year (thankfully it had a 12 month warranty).
Easy enough to check, just unbolt the shift motor and get someone to try engaging the 4 Hi switch so you can see if the arm is moving or not. When you get the new one plug it in and test it before mounting into the transfer case so if it happens to be something else, like the switch, you can box it up and return it.
They are known to fail on these trucks... I replaced mine last year and had the new one fail on me this year (thankfully it had a 12 month warranty).
Easy enough to check, just unbolt the shift motor and get someone to try engaging the 4 Hi switch so you can see if the arm is moving or not. When you get the new one plug it in and test it before mounting into the transfer case so if it happens to be something else, like the switch, you can box it up and return it.
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New User
Joined: Jun 2009
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Thanks CanadianSmokie. Does the shift motor sit on top of the transfer case? Is there anything else that I will need to remove beforehand?
Also, where did you buy your replacement shift motor from? What kind of price should it cost?
Thanks again for the quick reply and help.
Also, where did you buy your replacement shift motor from? What kind of price should it cost?
Thanks again for the quick reply and help.
Cargo Master
Joined: Jan 2008
Posts: 2,566
Likes: 18
From: The Great White North!
dlkbee, welcome to FTE!
When you sort out if it is the motor, you can also reach in behind the front tires and see if you can rotate the axle shaft. With 4X4 engaged they should not rotate like when unlocked. Another site most on here use is http://www.guzzle7pt3.com/maint.php for the lube of the hubs. He covers lots of other stuff for maint.
When you sort out if it is the motor, you can also reach in behind the front tires and see if you can rotate the axle shaft. With 4X4 engaged they should not rotate like when unlocked. Another site most on here use is http://www.guzzle7pt3.com/maint.php for the lube of the hubs. He covers lots of other stuff for maint.
Senior User
Joined: Jan 2009
Posts: 449
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From: Central Florida
What is the benefit of locking the hubs when putting it in 4X4? The other day I got stuck in some mud and just put it in 4Low and went, then put it back in two wheel drive when I was out of danger. Is there a benefit for locking the hubs over just leaving them at automatic when 4 wheel drive is engaged?
Don't mean to hijack the thread....
Don't mean to hijack the thread....
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
What is the benefit of locking the hubs when putting it in 4X4? The other day I got stuck in some mud and just put it in 4Low and went, then put it back in two wheel drive when I was out of danger. Is there a benefit for locking the hubs over just leaving them at automatic when 4 wheel drive is engaged?
Don't mean to hijack the thread....
Don't mean to hijack the thread....
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
I have a 2002 Excursion with the manual locking hubs plus the shift switch inside the truck. When I attempt to switch from 2wd to 4Hi, I hear no engagement of the drive nor do I see a visual confirmation with color showing on the switch that it is even working. I checked the fuses and those are good, so any other ideas that I can try would be greatly appreciated. Help....
