Does anyone remember the surge?

[Idahobidcaller]

I now have 23,000 miles on my truck and have had the dredded surge at stop twice lately. I seem to remember that a year or so ago there was some questions about a surge that is like getting rear ended at a stop. What, if anything, was the cause? I almost got out of my truck to see what happened until I remembered that this site had some threads about this. Any help?

[pullinpower]

idahobidcaller,you need to get your TCM and the PCM calibrated to the latest software that address's the 2-1 bump that your getting,my truck had the same problem and the update cured it all.

[SoMnDMAX]

PP's right. My TCM was flashed today to the latest updates, and they certainly help out. The 1-2 and the 2-1 shift is much more positive now. Also, my small flair I had from third to fourth is gone. Much better operation overall!! :cool:

[Jimamatic]

Idahobidcaller
My 2001 LS 2500hd D/A does it too. Currently
working the problem with the dealership. There is a bulletin out that addresses this which
is different than the 2-1 shift issue. It's
#01-04-17-004 drive axles, rear-clunk,bump,or
squawk noise.

Conditon

Some customers may comment on a clunk, bump or squawk noise when the vehicle comes to a stop or
when accelerating from a complete stop.

Cause

A slip/stick condition between the transfer case
output shaft and the drive shaft slip yoke may
cause this condition.

Correction

Replace the rear drive shaft slip yoke with a new
nickle plated slip yoke etc......

I'm 100% convinced this is my problem.
Hope this helps. From a fellow freedom lover
happy 4th...