How to Install Replace Transfer Case Shift Motor 2003-07 Chevy Avalanche

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1A Auto shows you how to repair, install, fix, change or replace a transfer case shift motor that is not working, engaging or is defective. This video is applicable to the 03, 04, 05, 06 Chevy Avalanche.
This process should be similar on the following vehicles:
2002 Chevrolet Avalanche 1500
2003 Chevrolet Avalanche 1500
2004 Chevrolet Avalanche 1500
2005 Chevrolet Avalanche 1500
2006 Chevrolet Avalanche 1500
🔧 List of tools used:
• Pry Bar 1aau.to/ofG/1AXAA00020
• 11mm Wrench 1aau.to/ofI/1AXAA00010
• 11mm Socket 1aau.to/ot4/1AXAA00015
• Ratchet 1aau.to/ovK/1AXAA00016
• Socket Extensions 1aau.to/ot4/1AXAA00015
• Torque Wrench 1aau.to/oni/1AXAA00044
• Marker / Writing Utensil
• Rust Penetrant
• Floor Jack 1aau.to/ogd/1AXAA00068
• Jack Stands 1aau.to/ofG/1AXAA00065
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⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[@1AAuto]

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[@SD-ht1ht]

Thank you 1A Auto. I just did my TC shift motor today in my GMC Sierra 1500. This video was exactly what I needed to get it done.

[@jrrhodes75]

Great video on how to install. The details you gave on the indexing the new motor and transfer gear in the neutral position helped my get mine truck back together !! Thanks! . All the other videos did not even mention that or what/how to do the indexing.

[@craigkrage2689]

Thank you again for another great informative video. I greatly appreciate them.

[@sixrings7243]

Great video, needed thus informative video to repair my 2005 Ta'hoe. Thanks alot.

[@uhdahnbracquemont6746]

Question, the male part on the transfer case that goes to the case motor, does it suppose to wiggle freely or is it supposed to be stiff?

[@joseantoniopalominovilcahu3152]

Hola, quería consultarle tengo ese problema que quiero cambiarle de AWD a 2T o 4W o 4T y no me permite, esto esla solución?

[@shauneesprague7919]

Damn dude you just helped me in a way you don't even know!

[@terryjohnson7870]

I have a 2005 Chevy avalanche z71 with no Service 4WD code .but can drive it in auto 4wd do you think the transfers case motor is the problem

[@USbilbo1966]

I know the purpose of this video focused on the transfer case shift motor replacement. But would it not be a good idea to change the u-joint(s) out at this time?

[@1AAuto]

+Troy Bilbrey If they need to be serviced it would be a good time to service them while you have the driveshaft out.

[@codyschwoch5451]

Will this make my 2003 Chevy avalanche go into 2 Wheel because currently mine only goes into four high for low and all wheel drive and this part, the reason why I’m asking is because it is quite expensive and I’ve already replaced almost everything else except for this in the transfer case, and both of those are pretty expensive

[@darronanderson1972]

My 1999 k1500 suburban one day once i shifted out of park stop going in all gears including park and is stuck in neutral. Do you think this is my problem? Please help and thanks ahead of time.

[@sandmountainx]

I turned my encoder motor to match the Tcase, does that mess it up?

[@texjames2000]

So have the transmission & the 4wd switch both in Neutral before starting this project?

[@adrenalinehigh2070]

texjames2000 nope. The only time you’ll need the transmission in neutral is once everything is back together and you are now sitting in the vehicle testing the different selections are working accordingly. Keep in mind to keep the truck’s transmission in neutral when you are shifting into 4HI and 4LO. I don’t get why the technician had it in neutral and then decided to do go back to park to test the rest of the selections. That’s why his selections never stop flashing. They never actually engaged.

[@jc1608]

AdrenalineHigh , so true , mine wont go into 4x4 , reason i an watching this video trying to troubleshoot, assuming its actuator . but could just be a relay or the dash switch

[@michaelk24]

Is the front drive shaft to rotate even in 2hi?

[@Kingcustomz]

Dude your truck still has the service four wheel.drive lit on the dash....

[@tonyamolitor3002]

yeah!!....noticed that too.....so how do you get that off?? reflash the computer???

[@koeddieprince4463]

His 4WD wasn’t even engaging. All the lights were still blinking except for when he put it in 2WD

[@jweidner27]

@@koeddieprince4463 Totally was about to post this. How did they not wait until it engaged? They probably have a bad ground.

[@chevyboyzz4996]

@@koeddieprince4463 the truck is in park after he turns the ignition on all the way and doesn’t put it in neutral that’s why he can’t shift into 4wd mode. He was able to at first because he turned the ignition w/o turning the engine on but he did put it in neutral and went from t-case neutral to 2wd.

[@markkimbell4254]

My indicator lights don't come on . And my dash tells me 4wd needs maintenance fluid is good. Nothing seems bad. Would that be my problem.

[@elmarmeliksoy9029]

Thanks for video please help, how i can shift transfer case to nutral?

[@RyanandSaraDelling]

people: how tough are you? me: I can shift my transfer case with my fingers

[@1AAuto]

+Ryan Delling Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@brianmendham2075]

I can’t get mine! It won’t bug

[@chevyboyzz4996]

@@brianmendham2075 try using some vise grips I couldn’t with my fingers but with the grips very carefully I was able to with out damaging the teeth

[@robertrob4754]

Good video. Would i b able to find out if is actually the problem before replacing it.

[@robertrob4754]

My 03 trial blazer 4x4 wen in N wen i was driving it going 60m. Can u help out???

[@mitchellsawin7435]

My 2006 Avalanche is stuck in 4 hi and won’t shift because the encoder motor is bad. How do manually shift it into neutral?

[@1971sls]

I have a 2001 suburban 5.3 4x4. I just replaced the control switch, no lights came on. Checked the ACT fuse it was blown. Changed fuse and the lights came on and switch worked fine. Got in the truck the next day and the lights did not work and blown fuse again. I know it is probably a short to ground but is there an easy way to diagnose without tracing all the wires?

[@1AAuto]

+Cant stand liberals We do not have a way of being able to diagnose the issue that you are experiencing with your vehicle but suggest taking it to a local mechanic for a proper diagnosis.

[@philbristow5792]

Will a 02 Transfer Case Encoder Motor work on a 05 Transfer Case

[@Antihero-4132]

No, the wiring is different

[@krcoutdoors4566]

Did you ever find out ? I’m trying to find out the same

[@ErikViktor]

Great helpful video. IMPORTANT! When you mention to put the transfer in neutral turning the keyway downward, what do you mean with "keyway". Can you be more explicit, maybe show a photograph or put it into the video? I expect the most important is to get the transfer into neutral before installing the new motor, so as long as it is and I am not sure where that keyway is, I can turn it until it is into neutral?! Right or wrong? Any risks? Otherwise great video.

[@tallbe1]

Erik Viktor ,Google keyway, and key stock if you don't know what a keyway is, a keyway is a slot that keeps a part aligned, suck as a pulley over a shaft, or in this case it'll turn your transfer case into the right position

[@diggadydaz5658]

Is this replacement for encode motor?is the same for a 07 Avalanche?? Please tespond back with some type of answer??

[@nadakidd]

Good video. FYI, the orientation of the u-joints is by design, irrelevant. Also, you may have to start the truck (in addition to putting it in neutral for 4 low) to get the shift motor to start working.

[@georgep1665]

Great video though

[@diegonunez6874]

I have a 2002 chey Silverado i changed the transfercase motor, changed the tccm and the swicht on the dashboard and stil the 4x4 don't work? Can you help me ?

[@logancook4538]

Check fuses it will be a 20 amp atc fuse on the right in the middle of your fuse box. Check grounds right under the driver side door mounted to frame may need cleaned up. Could possibly be an actuator problem that's a cheap and easy fix. Could be vaccuum issue/diaphragm. Good luck mate mine is stuck in 4wd low rn and my switch lights are out but the switch seemed fine when checking ohms. My 20 amp atc fuse was blown and when replaced it blew right away telling me it's probably the encoder motor. Make sure you change the encoder motor first then a new fuse or you will think the encoder motor was not the issue when maybe it was but you blew a fuse without knowing. Just a thought

[@SaladmandeR33]

Nice in depth tutorial, but it never went into 4HI, 4LO, or AUTO. It only fully shifted into 2WD. Why ??

[@SaladmandeR33]

isn't this why we are replacing the Transfer Case motor in the first place ??

[@ErikViktor]

Good question but no answer????

[@WRumble1]

Yeah, I was wondering that myself. That’s the whole point in the swap.

[@chasemiller76]

exactly

[@bubbajr91]

it was still in park when he was switching those buttons it looked like! gotta be in neutral

[@puregsr]

So I didn't have to take the driveshaft off. Just need to wiggle one of the bolts off cleverly by adjusting the driveshaft here and there (not that bad). I could do the whole job in under 15 minutes now

[@Roryf4462]

What symptoms were happening why this piece was replaced?

[@dougwimsett7742]

Ok where he marked drive shaft mine was uot when i bought it so how do i time it

[@laurencerilling5873]

you don't. if the drive shaft is unbalanced, putting it back in won't balance it

[@codenameexoliby6020]

Will this work on an 02 avalanche?

[@1AAuto]

+codename exoliby The installation process should be very similar for your vehicle.

[@planetdisclosure-filesdocs7018]

Can Someone Please Give me Advice! Please. I Had My Transfer Case Swapped Than Went For A Drive I Heard A Noise And A Little Jerk So I Pulled Over And Looked Underneath,All Looked Ok No Leaks Or Anything. But Now I Have To Start Off In 1st gear Than 2nd 3rd and Than Drive. Can Someone PLEASE HELP ?

[@kc_cruzer3272]

I have no power to when it comes to changing my 4wd I have put a new switch, a new actuator and still no power, meaning lights on the switch don't light up. Already checked fuses and couldn't find any popped. is this what would cause no power to switch into 4wd?

[@dustenwhite4911]

I'm wondering the same thing.

[@1AAuto]

+kris cruz Thanks for watching! There could be multiple reasons why you're having this particular problem. We suggest taking your vehicle to a nearby reputable shop to accurately identify the cause! 1aauto.com

[@timteevin4517]

Has to be in neutral to go into 4 low.

[@williamthompson3066]

My big question is what kind of fluid goes in the transfer case

[@ranchosdelnorte]

Auto Trak II, it's blue in color and only available from AC Delco as far as I know

[@Trebor-gw8lt]

Holy oil leak Batman!

[@georgep1665]

It really is a shame that you got to remove a drive shaft to get to the actuator motor on that vehicle and I just did mine a couple of days ago but it was an 06 trailblazer and I can't believe how easy mine was. Removing that drive shaft on set of ramps isn't that easy.

[@danielbmartin]

Is it permissible to remove a faulty transfer case shift motor and discard it rather than replace it? I don't want to buy that costly replacement motor and am perfectly willing to disable 4WD permanently.

[@1AAuto]

+Daniel B. Martin Thanks for watching! In theory you could just not install a new one, you would just lose all FWD functionality. 1aauto.com

[@danielbmartin]

@@1AAuto Thank you, 1A. I'm also searching for a low-labor means to achieve the same purpose. I hope to identify one fuse which will disable FWD permanently but not affect anything else. There is a fuse marked TREC. Is that the one? 2004 GMC Yukon.

[@nigelio3]

@@danielbmartin Yes it is the fuse in the 2004 Yukon. That's the same truck as mine. However, if you just pull that the truck will still be (if it's stuck) in 4wd. Same as if you pull the motor, or disconnect it, because the front drive shaft is still in. However, if you really don't want to change the motor (not sure why you wouldn't, they are like $100 on Amazon), just pull the front drive shaft and motor and drive all you want in 2wd. That is, considering that the front differential actuator hasn't locked your front wheels in 4wd still. That won't disengage without the signal to do so. So, you'd have to pull that as well.

[@BlessedDad1819]

Funny, my oil pan and filter look the same way. Covered in oil.

[@kylejermstad]

More cowbell!

[@autumnwoe6356]

Very easy to turn? Mine won't turn.

[@mayfieldmotorsports7174]

2007 avalanche is different

[@georgep1665]

Really a shame that you got to remove a drive shaft to get to an actuator motor. Thank God I didn't have to do that on my 06 trailblazer

[@georgep1665]

Sorry I thought you were replacing an actuator motor my mistake that's what I saw when I was looking for something

[@jojo12gage]

I called 1aauto and a young lady told me you guys dont talk to people over the phone

[@1AAuto]

+wherecrazy thingshappen We most certainly do and we apologize for the poor experience you had with one of our reps. We're notifying them all of your experience, as part of our effort to keep a high standard on our Customer Support Team

[@jojo12gage]

@@1AAuto it's ok. I wont say I'm a huge fan. But I am a fan whom watch every video that has something to do with every vehicle I have or is currently working on. Hands down you guys are the best!!

[@whtwlf80120]

It's a sham all these encoder motor replacements and diagnosis is for push button transfer case. Not on the floor stick.