All the signs point to pinion angle to me.... Why hasn't anyone shaved a little off the rear of the axle brackets to adjust the angle? mine seems to do it a little the first minute or so on the highway, then smooths out. I'm lowered 4/6". maybe raising the transmission mount a little might help as well? I might look into it in the future, but it's not that bad to me. does the driveshaft get pushed in too far after lowering? I wish I measured my angles before lowering the truck, but hindsight, ya know.

 

Good flip kits will move the axle to the rear of the truck after flipping. I will say once lowered the tranny doesn't clunk in/out of gears anymore. So thats a plus, but I still have a vibration on decel under 25mph.

Which normally on decel vibration the pinion angle needs to go up, the trans and pinion are within 1.5° which should be good or so I thought. Might try a trans spacer and see what happens.

 

Are you in v4 or v8 mode when it vibrates?

 

Have no V4...been gone since 1k miles.

 

Faur enough.... They do still have issues with the lifters/vlom randomly quitting though

 

They do... Have talked to a few guys now on facebook and such about lifter failures in these. GM has a TSB for it too... Afm is still the same junk.

 

Booked my bucket in for Tuesday about my vibration under load and my stupid 8 speed. I doubt the tranny will get any better as the service guy and I talked for a bit and he admitted even they are getting frustrated with GM as they don't actually fix this trans and just keep pumping them out. Well hopefully we get a resolution to the vibration anyway.

 

Good luck with the shaking issue.

RT

 

They changed my torque converter and it fixed a number of tranny related issues.
Weird clunks and hard downshifts, lock up cycling in and out.
Still would rather have a six speed though.

 

Gm has some sort of service update they put out on the 8 speeds in the camaros behind the 3.6 about the turbine shaft breaking in it and before any of them got done the resended it, something about a reflash to fix it and the reflash is apparently throwing all sorts of other codes in the process.... Reitterates why i dont want a sixth gen camaro.... Shouldve left well enough the hell alone...... Wouldnt buy a 2014 and up silverado either unless it is a 2500 with the l96 in it!! Although the realtree edition may just do me in on that!!