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dieselfumes57 12-09-2004, 12:39 PM It dont matter if i star or stop there is a bump in the rear end like a u joint is goin out but they are ok. It feels like something is loose and is getting worse. I dont think its the spring slap everyone is talking about. You can also feel the rear goup or down when it does it and its also not the putting you truck into gear bump either i know what that is .. any help? 02 2500 hd max big_jon00 12-09-2004, 03:25 PM Check your cross member bolts on the tranny.. I had it were the bolts in the trany support got loose and was making a bump/clunking noise. or could be a or b trim valve getting a little sticky in the tranny.. Just some thoughts.. Jon 8.1GASSER 12-09-2004, 07:13 PM Sounds like the slip yolk off the rear of the tranny...they tend to dry out and start clunking...had mine replaced with a nickel plated one...clunk is gone. SaguaroKid 12-09-2004, 10:03 PM Spare tire? dieselfumes57 12-10-2004, 11:16 AM thanks i will look at that Goldneye 01-21-2005, 10:16 AM How many of you have the START / STOP = CLUNK? Is there a permanent fix? I have made an appt. with my dealer next week to check it out, But if it is only a temporary fix why bother? whate do you guys think? My 92' had the same issue, but at least it had a zerk on the slip yolk:) dieselfumes57 01-21-2005, 03:30 PM I put the o rings from erics site on and it didnt seem to affect anything. Guess i need a trip to the stealer. Derek M 01-21-2005, 10:45 PM The start/stop bump on my truck is associated with the two piece drive line and the mating slip yoke. I lube mine around every 5-7k miles. I too wish there was a more permanent fix. Also I've noticed that when it's cold under 40F the bump is non-existent no matter if the yoke is lubed or not. Must be a tolerance thing that is just slightly off. | ||