Weird jerk at stop and go

[sweet addiction]

Ok, when I come to a complete stop and then start to go again, say, stop and go traffic or stop sign. I get this jerk. I don't know if something was loose with my axle but I check and everything looked good. I am thinking something must be up with my diffy? Any thoughts. Oh after you stop then hit the gas it jerks, sometimes pretty bad.

[Bill]

Ok, when I come to a complete stop and then start to go again, say, stop and go traffic or stop sign. I get this jerk. I don't know if something was loose with my axle but I check and everything looked good. I am thinking something must be up with my diffy? Any thoughts. Oh after you stop then hit the gas it jerks, sometimes pretty bad.


What year truck, was common mid to late 90's into the 2000's. There was a funny clunk that went with it. There was a TSB on it for diff fluid. If newer, I am not sure.


Edit: prolly not what I am thinking if int he D-max section although the Dmax did come out early 2000's.

[phragle]

block the tires, put it in neutral climb under and try twisting the driveshaft.. you should be able to tel pretty quick if it a u-joint, carrier bearing...tranny mount?

[BUIZILLA]

i'll tell you what mine did

not all the time though

very rarely actually

it takes off in second gear about 1-2-maybe 3 feet, then drops to first gear with a BIG clunk and jerk.. then takes off, shifts, and runs fine

sound familiar?

[phragle]

From the title of the thread..it does sound like you met some freak of nature while getting your turbodog and slushie....

[Bgchuby01]

If its taking off in second gear and then dropping back to first it may be the govenor in the trans.

[Airpacker]

the slip joint in the rear drive shaft binds up. When you hit the brakes, the nose goes down, the azz goes up and the slip joint moves outward.Becaus the driveline is loaded, the torque holds the slip joint in this extended position. When you release the brakes and hit the gas, the rear squats, the nose rises and the slip joint tries to move inward. The binding creates a clunk noise. Very common issue with GM trucks.

[jwurl]

I work at a GM dealer. The post above mine is correct. Driveshaft splines are binding due to lack of grease. I had the same issue with my personal truck. Grease the driveshaft yoke real good and it should stop. Jeff Wurl

[Chris]

+1. Just happened on my Ex.

[Tinkerer]

Had the same thing happen with my AWD work van.
Turns out the rear axel had lost the gears and I was driving using the front axel only. The rear end is normally noisy on these vans so I never knew it was going out.
The jerk was when the computer registered no front wheel speed but the rear end was still turning. The jerk was the transfer case locking up sending full power to the front end.

[Perlmudder]

i'll tell you what mine did

not all the time though

very rarely actually

it takes off in second gear about 1-2-maybe 3 feet, then drops to first gear with a BIG clunk and jerk.. then takes off, shifts, and runs fine

sound familiar?

our 93 suburban does the same thing, not all the time, but everyone once and a while

[BUIZILLA]

our 93 suburban does the same thing, not all the time, but everyone once and a whilemine was an Allison... you could see on the scanner that 1st gear was selected but the scanner said 2nd gear was attempted..

[Griswald]

Driveshaft splines are binding due to lack of grease. I had the same issue with my personal truck. Grease the driveshaft yoke real good and it should stop.

ditto. I bet you notice more when it's warm/hot outside?

[sweet addiction]

This sounds like what is going on. I don't think it is my transmission. Although back in the day I ran two programmers and blew up the ECU, but the transmission only went to limp mode one time. Never had any more problems with it. I do not run programmers anymore back to a stock truck. I am going to read the post below yours. What is the fix for this? Maybe it is posted below so excuse me if it has been answered.



the slip joint in the rear drive shaft binds up. When you hit the brakes, the nose goes down, the azz goes up and the slip joint moves outward.Becaus the driveline is loaded, the torque holds the slip joint in this extended position. When you release the brakes and hit the gas, the rear squats, the nose rises and the slip joint tries to move inward. The binding creates a clunk noise. Very common issue with GM trucks.

[sweet addiction]

Ok, here is my answer. I do occasionally climb in under the truck, but is there a grease fitting or do I need to pull it out to grease. This kind of sounds like a big job, although I can tackle it.



I work at a GM dealer. The post above mine is correct. Driveshaft splines are binding due to lack of grease. I had the same issue with my personal truck. Grease the driveshaft yoke real good and it should stop. Jeff Wurl

[sweet addiction]

I have a 2wd, and I have not heard any noise in my read end so that can't be it. I change this fluid on a regular basis.






Had the same thing happen with my AWD work van.
Turns out the rear axel had lost the gears and I was driving using the front axel only. The rear end is normally noisy on these vans so I never knew it was going out.
The jerk was when the computer registered no front wheel speed but the rear end was still turning. The jerk was the transfer case locking up sending full power to the front end.

[sweet addiction]

Could you give me a little more info on how I should go about repairing it. I feel blind on this one, but I am pretty good at figuring stuff out. I think this is my last issue on the truck.



I work at a GM dealer. The post above mine is correct. Driveshaft splines are binding due to lack of grease. I had the same issue with my personal truck. Grease the driveshaft yoke real good and it should stop. Jeff Wurl

[sweet addiction]

2005 2wd D Max 2500 HD






What year truck, was common mid to late 90's into the 2000's. There was a funny clunk that went with it. There was a TSB on it for diff fluid. If newer, I am not sure.


Edit: prolly not what I am thinking if int he D-max section although the Dmax did come out early 2000's.

[sweet addiction]

You got me. That is pretty funny. :sifone:



From the title of the thread..it does sound like you met some freak of nature while getting your turbodog and slushie....

[Griswald]

Could you give me a little more info on how I should go about repairing it. I feel blind on this one, but I am pretty good at figuring stuff out. I think this is my last issue on the truck.

you have to pull the shaft and grease the splines to the intermediate shaft. 20min job at best

[sweet addiction]

Thanks, I will look at it this week.


you have to pull the shaft and grease the splines to the intermediate shaft. 20min job at best

[sweet addiction]

Thanks for the tip!! :cheers2: greased the splines and it was smooth all the way home. Now the lower back support of my seat broke. WTF!! Always something. It looks simple I need to stop at the GM dealer and see if there is a part.



I work at a GM dealer. The post above mine is correct. Driveshaft splines are binding due to lack of grease. I had the same issue with my personal truck. Grease the driveshaft yoke real good and it should stop. Jeff Wurl

[sweet addiction]

I took care of that jerk at the stop and go. :sifone:


From the title of the thread..it does sound like you met some freak of nature while getting your turbodog and slushie....

[sweet addiction]

fix the wire in the seat this week. It just broke off. Just rolled up the upholstery and there it was no problem. I about have a new truck, just needs a new paint job. :sifone: