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#12711255 - 04/10/18 06:48 PM Duramax "jerk" when stopping/accelerating
dk2429 Offline
Pro Angler

Registered: 03/28/16
Posts: 526
Loc: Pearland, TX
Truck is a 2006 2500HD with the LBZ Duramax.

I bought the truck at 178k, now at 193k. I did notice this when I test drove the truck, but didn't really think anything of it. When I get to a stop, I feel a jerk or clunk. Then when I get on the gas from a stop, I feel a clunk again. It's almost as if there might be slack in the driveshaft somewhere. Shifting into gear is fine, normal driving is fine. It's just on starts/stops. Transmission is fine, shifts perfect, etc.. Wondering if anyone else has had the issue before? I've been driving it since 178k with it doing this but for whatever reason haven't thought anything about it. Want to get it fixed. Ideas?
_________________________
Majek 22 Extreme/225 Optimax Pro XS
2006 Chevy 2500HD Silverado/6.6 Duramax LBZ



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#12711594 - 04/11/18 01:19 AM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
Slow Drifter Offline
Pro Angler

Registered: 06/23/10
Posts: 793
Loc: CenTX
Motor mount, maybe? I've never had a Duramax, but I've had broken motor mounts on a few vehicles with similar symptoms, more on the taking off than the stopping. Good luck with it.
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#12711603 - 04/11/18 02:11 AM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
CraZyNOTRT Offline
Outdoorsman

Registered: 01/04/13
Posts: 83
Loc: McKinney, Tx
Check your suspension, sounds like ball joints, worn out bushings, differential, or u joints.


Edited by CraZyNOTRT (04/11/18 02:12 AM)

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#12711678 - 04/11/18 07:18 AM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
Samsonsworld Offline
TFF Team Angler

Registered: 12/12/08
Posts: 3558
Loc: Oeste Del Tejas
Lot of trucks have axle wrap that causes similar symptoms.

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#12711704 - 04/11/18 07:44 AM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
Couples Team Online   content
Angler

Registered: 05/02/13
Posts: 298
Loc: Lindale
Might check to see if its a 2 piece driveshaft. Sometimes they make a bump feeling when stopping or taking off from a stop! Grease the joint if it is a 2 piece!

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#12711870 - 04/11/18 09:54 AM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
ChuChu1 Online   content
TFF Team Angler

Registered: 03/08/10
Posts: 3371
Loc: Gonzales, Tx
Grease the slip joint or joints on the drive shaft. You Tube has plenty of how to videos.
_________________________
Snowflakes and entitled brats will be the doom of America!



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#12712066 - 04/11/18 12:04 PM Re: Duramax "jerk" when stopping/accelerating [Re: ChuChu1]
patriot07 Offline
TFF Guru

Registered: 04/20/10
Posts: 19296
Loc: chateau d'if
Originally Posted By: ChuChu1
Grease the slip joint or joints on the drive shaft. You Tube has plenty of how to videos.
Yep
_________________________
Life can only be understood backwards; but it must be lived forwards.
- Soren Kierkegaard

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#12712144 - 04/11/18 01:10 PM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
CraZyNOTRT Offline
Outdoorsman

Registered: 01/04/13
Posts: 83
Loc: McKinney, Tx
If the u joints are making that sound REPLACE them. They are too worn out and No amount of grease will fix them. They are cheap and easy to replace.

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#12712172 - 04/11/18 01:27 PM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
dk2429 Offline
Pro Angler

Registered: 03/28/16
Posts: 526
Loc: Pearland, TX
I'll get under there and grease everything up today to see if that makes a difference.

Something I forgot to add though.. If I pop it into neutral rolling to a stop, it doesn't do it. Just stops normally, put it into drive fine, hit the gas, bump. I also noticed that it only is noticable at operating temp. When the truck is still cold, it's very very minimal or not even noticable
_________________________
Majek 22 Extreme/225 Optimax Pro XS
2006 Chevy 2500HD Silverado/6.6 Duramax LBZ



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#12712490 - 04/11/18 05:32 PM Re: Duramax "jerk" when stopping/accelerating [Re: CraZyNOTRT]
ChuChu1 Online   content
TFF Team Angler

Registered: 03/08/10
Posts: 3371
Loc: Gonzales, Tx
Originally Posted By: CraZyNOTRT
If the u joints are making that sound REPLACE them. They are too worn out and No amount of grease will fix them. They are cheap and easy to replace.


It's not the u joints, it's the slip yokes. You will have to remove the drive shaft and grease the yoke or yokes on the inside. Don't put too much grease in them, just a light thin layer of grease.


Edited by ChuChu1 (04/11/18 05:34 PM)
_________________________
Snowflakes and entitled brats will be the doom of America!



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#12712793 - 04/11/18 09:13 PM Re: Duramax "jerk" when stopping/accelerating [Re: ChuChu1]
dk2429 Offline
Pro Angler

Registered: 03/28/16
Posts: 526
Loc: Pearland, TX
Originally Posted By: ChuChu1
Originally Posted By: CraZyNOTRT
If the u joints are making that sound REPLACE them. They are too worn out and No amount of grease will fix them. They are cheap and easy to replace.


It's not the u joints, it's the slip yokes. You will have to remove the drive shaft and grease the yoke or yokes on the inside. Don't put too much grease in them, just a light thin layer of grease.


Yep, that's got to be it. I looked up what you mention and they describe what mine is doing. Only thing is, I read that greaseing them will only last you 20-30k miles and it will come back.. I guess the only way to fix this for good is to just a new slip yoke? I don't want to pull the driveshaft every 20k miles or less
_________________________
Majek 22 Extreme/225 Optimax Pro XS
2006 Chevy 2500HD Silverado/6.6 Duramax LBZ



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#12712843 - 04/11/18 09:47 PM Re: Duramax "jerk" when stopping/accelerating [Re: patriot07]
redchevy Online   content
TFF Celebrity

Registered: 01/25/05
Posts: 7097
Loc: texas
Originally Posted By: patriot07
Originally Posted By: ChuChu1
Grease the slip joint or joints on the drive shaft. You Tube has plenty of how to videos.
Yep

Yep our two both do it greasing it is a temporary fix it will come back. It’s been doing it for over 200k miles and doesn’t seem to hurt anything.

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#12713137 - 04/12/18 08:03 AM Re: Duramax "jerk" when stopping/accelerating [Re: dk2429]
ChuChu1 Online   content
TFF Team Angler

Registered: 03/08/10
Posts: 3371
Loc: Gonzales, Tx
Originally Posted By: dk2429
Originally Posted By: ChuChu1
Originally Posted By: CraZyNOTRT
If the u joints are making that sound REPLACE them. They are too worn out and No amount of grease will fix them. They are cheap and easy to replace.


It's not the u joints, it's the slip yokes. You will have to remove the drive shaft and grease the yoke or yokes on the inside. Don't put too much grease in them, just a light thin layer of grease.


Yep, that's got to be it. I looked up what you mention and they describe what mine is doing. Only thing is, I read that greaseing them will only last you 20-30k miles and it will come back.. I guess the only way to fix this for good is to just a new slip yoke? I don't want to pull the driveshaft every 20k miles or less


GM offers a yoke made of nickle that is supposed to fix it.
_________________________
Snowflakes and entitled brats will be the doom of America!



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#12713435 - 04/12/18 10:57 AM Re: Duramax "jerk" when stopping/accelerating [Re: ChuChu1]
patriot07 Offline
TFF Guru

Registered: 04/20/10
Posts: 19296
Loc: chateau d'if
Originally Posted By: ChuChu1
Originally Posted By: dk2429
Originally Posted By: ChuChu1
Originally Posted By: CraZyNOTRT
If the u joints are making that sound REPLACE them. They are too worn out and No amount of grease will fix them. They are cheap and easy to replace.


It's not the u joints, it's the slip yokes. You will have to remove the drive shaft and grease the yoke or yokes on the inside. Don't put too much grease in them, just a light thin layer of grease.


Yep, that's got to be it. I looked up what you mention and they describe what mine is doing. Only thing is, I read that greaseing them will only last you 20-30k miles and it will come back.. I guess the only way to fix this for good is to just a new slip yoke? I don't want to pull the driveshaft every 20k miles or less


GM offers a yoke made of nickle that is supposed to fix it.
That's a crummy solution, unless they're offering it as a free replacement for owners, which I'm sure they're not...
_________________________
Life can only be understood backwards; but it must be lived forwards.
- Soren Kierkegaard

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#12714179 - 04/12/18 07:07 PM Re: Duramax "jerk" when stopping/accelerating [Re: redchevy]
dk2429 Offline
Pro Angler

Registered: 03/28/16
Posts: 526
Loc: Pearland, TX
Originally Posted By: redchevy
Originally Posted By: patriot07
Originally Posted By: ChuChu1
Grease the slip joint or joints on the drive shaft. You Tube has plenty of how to videos.
Yep

Yep our two both do it greasing it is a temporary fix it will come back. It’s been doing it for over 200k miles and doesn’t seem to hurt anything.


So I take it, this is a common problem on these trucks I'm not aware about? I know it's not hurting anything, it's just annoying.
_________________________
Majek 22 Extreme/225 Optimax Pro XS
2006 Chevy 2500HD Silverado/6.6 Duramax LBZ



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