Hey guys, I've noticed my truck vibrates when the truck shifts from second to third. all other gears are fine. you feel the vibration when you're accelerating hard. i don't notice it when driving slow/normal (within speed limits). I've noticed this for quite sometime. its not getting worse. when shifting from second to third manually, it doesn't do it. two times I took it to the dealer and I got the usual "could not duplicate". I have 50K miles on her. changed the tranny fluid once, not a full flush, just empty the pan and refill. Any ideas? someone said it might be the slack in the drivetrain??

Sounds like it could be axle wrap? Is this a big tow or offroad truck with the low geared rear end?

By the way, Welcome to the site!

Was this noticeable before you did the transmission fluid change? Nissan has a very involved process to change out the transmission fluid that avoids getting any air into the system. Perhaps, it gulped some air from the first start-up after filling and the air is trapped in some nook or cranny that is vital to the 2-3 gear change. I'm just guessing out loud on this one.

Maybe the dealer can do a full fill/flush and fix this problem.

Only other thing that comes to mind is something out of balance.

Red

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2005 Titan KC SE, Helwig, True-Track, ARE MX Canopy

Yeah, I have the big tow package.

I noticed it maybe 6 months ago. It hasn't gotten worse or anything. I did change the tranny oil but didn't do the whole tranny flush. I don't remember it i noticed it before or after the oil change. maybe after we did the oil change. we only emptyed out the oil pan and refilled it. could that cause air pockets? someone said that it could even be the u joints. a lot of poeple don't think it's the tranny. if it was, it would go gotten worse, would of went out by now.

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2005 Nissan Titan SE CC Blizzard White
BIG Tow Package
Nismo CAI
JBA Cat Back Exhaust
Donahoe Coilovers
1inch Rear Block
Nitto Terragrapplers