New guy here. I just installed a radix on my 05 GMC Sierra 4wd crewcab. Very happy with the performance boost but I'm looking to maximize what I have.

When I get on it, the shift from 2nd to 3rd seems like a clutch slipping in my old stick shift Honda. Is this what its supposed to feel like or do I need to upgrade my transmission some how?

I'm looking for any recommendations or suggestions as to what direction or upgrades I should consider.

Thanks and great site!!!!

 

Just toi be safe u shud talk with Mag and have them dbl check the tune they sent u. I put a shift kit and Corvette servos in mine and it shifts nice and solid/smooth...gives u a bit of a jolt into ur seat when it shifts. Look for BlownChevy on here. R/

 

Sure it isn't the T-converter locking up?

 

sounds like your feeling the two step shift, or what feels like a two step shift. If this is the case, I don't know if you'll ever be able to get rid of it completely with the 4l60e, if thats what you have.

 

most people put a shift kit in the tranny to prevent the clutches from slipping.

 

You should definatly should install a Transgo shift kit and Vette servos. Mines been fine and I must have atleast 20 passes down the 1/4 mile. I didnt install any of the washers that cause it to shift hard You dont want it to bang hard with the Radix.

 

welcome! your gonna love that new power, but if you have a 60e you better at least get a shift kit and servos.

 

Thanks for the replys.

Is there any advantage to getting a different tune from Nelson or Westers or someone else?

 

Is there an easy way to tell which transmission I have?

 

click on userCP and update your signature with what your truck is...and mods as so the guys on here can give you more specific help.

you have a 5.3L motor...then you have the 60e.