How To Install Replace 4x4 Axle Actuator Chevy Silverado GMC Sierra 1999-06 - 1AAuto.com




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1A Auto Parts: @2allendorf82 It may be due to a bad axle shift actuator you may want to take a look at it to see if has gone bad. Here's a link to them on our site if you need one. Hope this helps you out. http://www.1aauto.com/1999-chevy-k1500-truck-4wd-parts/y-mo-c/1999-1518-30?utm_source=VideoReply&utm_medium=Forum&utm_campaign=1ATony 

Bryan Almond: I have a 2002 gmc 1500 z71 4x4 I replaced cv axles and hubs recently and we just got a first snow and went to turn the 4 wheel hi on (push button ) the light flashes says in 4wd and feels like it is 4 wheel (maybe on one side) but it makes a rubbing/grinding nosie does it worst turning the wheel too what could it be ? Mind u I can't hear the transfer case to engage either ÷ 

April White: My 1993 Chevy 1500 4 wheel drive will not shift into 4 wheel drive it says its in 4 wheel drive but no 4 wheel drive why is that and what is wrong

Shon Ingram: I have a 2004 Chevy Colorado. I switched it from 4hi to 2hi at the correct speed on a gravel road. There was a "clunk" and the lights on the push button display flashed and went off. On the dash display I got a "Service 4wd" message. Now the lights only come on when the truck is started. Could this be the actuator? I have tried everything. Thanks for your help!

Rocky Sisneros: I have a 03 Silverado 2500hd gas it is a manuel 4 wheel drive without locking hubs. The 4 wheel drive indicator light comes off and on what could be the problem

ArmaAceChannel: anyone recommend dropping the whole front axle for replacing the oil pan gasket?

rob21flores: 04 tahoe z-71 stays in 4 or sometimes only in 2. I unplugged the actuator and every once and a while when I turn the truck on it will be in 4 wheel dr. Please help

Rocky Sisneros: I have a 03 Silverado 2500hd gas it is a manuel 4 wheel drive without locking hubs. The 4 wheel drive indicator light comes off and on what could be the problem

Wave Crusher: +1A Auto Parts, I was following this video to help replace the actuator in my 2002 gmc 2500hd, when I took out he old actuator it came out very hard, and there was plastic strips coming off the threads. I tried to screw the new actuator in but it would not go in, it was kinda catch but then pop back off the threads. It started to go in once but was very hard, I pulled it out and the first line of threads was stipped completly off...what would cause that? was is the wrong actuator? It looked exactly like the one that was on there. I believe then one I had as the good one was from an older truck like a 98 chevy 1500 with push button 4x4

allendorf82: In my 1999 silverado 1500 it's stuck in 4 hi cant get it to go to 2wd dash switch is brand new an works in my other 1999 I hear a buzzing like it wants to go into 2wd twice then flashed sum times shuts off or goes back into 4 hi any help ?

Mac Dungle: man i have to drop this front axle or lower it securely just to change my oil pan gasket. and what is with gm trucks always leakign oil?

John Quillian: hi I have a 2000 chevy Silverado 1500 the it runs and drives great 2 wd works good and 4 hi works good but when I go to put it in 4 low the light just flashes and for a while and stays in 4 hi. could it be the 4wd switch panel or the actuator? realy would like this fixed soon thanks.

oneloudchevy32: I have a 2000 silverado z71. The problem is when I put it in 4wd I can hear it engage but its still in 2wd. I also have a service 4wd light on. I know its not the switch because it works. Just the front wheels dont pull. Ever heard this before? Could it be my actuator? Thanks for the video.

Pierre Perea: 93 Chevy Silverado, 1500 - works only in 4w lo - if taken out of 4 w lo it takes about 4 or 5 tries for it to re-engage in 4 w lo. 2 hi or 4 hi will not engage.

Seth Wiley: I have a 2002 chevy silverado 1500. I can hear my transfer case switch to 4wd and the front axle locks. I checked the actuator and it extends when in 4wd but my hubs don't lock in. Could my actuator not be extending all the way or what could the problem be?

will Janis: i have a 95 gmc, that won't engage the 4 wheel drive, shifter works but lights won't come either

Travis Henning: I have a 99 Silverado with push button 4x4, it doesn't like to go into 4hi. I just replaced the transfer case motor which was bad. I checked fuses, and tried replacing the dash switch. Could it be the actuator thats bad, not letting it go into 4 hi? when I press 4 hi the button blinks a few times and you can hear the motor trying to shift but most of the time goes back to what it was in before.

Rodney Allred: i have a 1996 GMC 4x4 truck is stuck 2 wheel drive. my lights on the push button blink but the front wheels wont engage. could it be the actuator? thanks for youre help

troy kubitz: i have a 2005 5.3 silverado w/push button 4wd. it is stuck in 2wd. When 4hi or 4lo buttons are pushed no lights blink, no mechanical sound of trying to engage. is it the Actuator switch? How do i test the existing actuator switch? Or could it be the button panel switch? What is more likely?

alejandro rodriguez: I have a chevy Tahoe 2000 . the front shaft that goes from transfercase to front diferencial is always turning 2wd or 4wd is this normal?

Jack Lalanne: I have a 99 Silverado Z71 and my "Auto 4WD" button doesn't work (the rest of the buttons work fine). Any thoughts on what the likely problem is would be greatly appreciated.

MrAjd1982: i have an 05 tahoe that wont go into 4lo, could this actuator need replaced, it makes a clang clang sound when i hit the 4lo and then just stays in 2hi

eclipse1525: 2005 Chevy Z71 1500. Truck will work in 4wd auto, but can not drive if in 2hi or 4hi. You can switch to 4hi and 2hi but once I put the truck in drive, going 5-10mph, you hear gears griding trying to switch back(?) and I have to stop the truck and place in park (with a whirring type sound when doing so) turn off the engine, start up again and place in 4wd auto. The truck while in 4wd auto, will then drive but with what feels like a "drag" in the engine at around 30-35mph. If anyone can help with this, it would be appreciated!

madsamoan26: Hi. I was going up a hill on a rainy day and put my 2002 tahoe in 4wd and only the back tires were spinning. Is this the switch I need most likely? Thanks

madsamoan26: Hi. I was going up a hill on a rainy day and put my 2002 tahoe in 4wd and only the back tires were spinning. Is this the switch I need most likely? Thanks

Patricia Garner: i havea 99 z71 and will got in to 4x4 low but not hi !! will this fix it

1A Auto Parts: There could be either a fault with the transfer case, shift motor or the front differential. Bringing it into the shop and having them read the codes will be the best bet at this point.

1A Auto Parts: Make sure that the actuator has power or vacuum to it.

Rex Ward: Excellent Video! Thank You. I watched because I am looking at buying a 2001 GMC Sierra that needs this part replaced. It was stuck in 4 and the current owner replaced the transfer case and the dash switch. He then unplugged the actuator and it went back to 2. Anyway, I have a 2004 suburban that is giving me a service 4WD message, could this be the problem? It's a Z71 but I assume that the transfer case and such is the same. Thanks!

1A Auto Parts: @pooh3700 It could be the actuator. You may also want to inspect all of your vacuum lines in the engine bay to see if there are any broke or disconnected ones that could be causing the issue. Hope this helps you out.

1A Auto Parts: @Davaith That could be a bad wheel bearing. You may want to check them to see if they're worn.

shawn slater: the front cv joint in my 2500 gmc 1990 wont stay in the transfer,keeps popping out,what could be wrong

1A Auto Parts: You may want take a look at the look at the transfer case to see if it was damaged.

Ramon Corona: u dnt got any viedos of how to pull out a tranny on a 1999 gmc yukon

1A Auto Parts: Hi Jeff, You could put the truck in 4x4 mode jack the front end up and try to turn the front tires by hand. If they do not turn, then the transfer case is locked into 4WD. Hope this helps you out. 1aauto.com 888-844-3393

Terceira73: "wasn't working" to correct my earlier comment regarding the 4wd.

imaniguana: I have an 03 Avalanche z71 1500. The front differential is engaged all the time, yet the 2WD button is lit. I've tried switching through all kinds of combinations 4 HI, 4 LO, 2HI, neutral, but I can't get the front differential to disengage. I took it to one mechanic and he said it's not engaged and there's nothing wrong, yet I hear all the front differential sound when I'm driving and my gas mileage indicates it's engaged. What do you think the problem could be?

1A Auto Parts: Then the issue might be related to the linkage not being in the correct position.

1A Auto Parts: It could be an actuator or a vacuum leak issue. 1aauto.com 888-844-3393

1A Auto Parts: Currently we do not. Thanks for visiting our channel on YouTube.

1A Auto Parts: It could definitely be the the issue but it could also be the transfer case shift motor. You might want to see if the motor is working first and then see if the actuator is pushing out when you hit the 4hi.

jofes51: Alright I have a problem. its a 2001 chevrolet silverado 1500 z71. I never had any problems with my truck not going into 4wd. I put a body lift and a new set of tires on it and the day that I completed this my service 4wd light came on. every now and again it will go away and I can lock it into 4hi and 4low no problems coming out of either as long as my truck doesn't get turned off while its engaged (if so the service 4wd light will come on and Ill have to mess around with my truck untill it

1A Auto Parts: @Dudedaaman It could be. You may also want to have the computer scanned to see what the culprit might be. If there's a code stored, it should tell you what it is.

mario d.c: hi can anybody help me im really lost i have a 1990 chevy silverado &i went to put it in 4 wheel drive yesterday &my shifter wont move i know that i have to put it in neutral but it still wont move didn't wanna force it so i left it alone being that it was -20 (extremely cold) i didn't want to force it &risk breaking my shifter .

1A Auto Parts: If it's not working, you should make sure that there's power going to the actuator.

theannoyingradio: How much do these cost??

02CamoZ71: Hi. How do I know if my actuator has gone bad?

1A Auto Parts: It may be that the actuator has gone bad.

Philipp Lahm: @1aauto i have a 1999 chev blazer 4x4, there is a dash in my car saying 4x4 service, it dose go off and came back on again, now its always on, when it dose go on 4x4 doesn't work, am not sure if its just the switch or the axle Actuator or something else.
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How To Install Replace 4x4 Axle Actuator Chevy Silverado GMC Sierra 1999-06 - 1AAuto.com