Need help from GS plumbers....

[CoonStalker]

I apologize in advance for not knowing the "correct plumber terminology"....I have a leak coming from my shower. It is a single control on/off knob with a second control behind it for temperature adjustment. When I remove the items in the first pic, I am left with what is in the second pic. Do I need to pull the white part out (I am guessing called the handle cartridge per lowes website) or do I remove the shower valve nut first to get to the cartridge? Thanks for your help.

[hrdwrkncwby76]

Need a cartridge puller

[CoonStalker]

Need a cartridge puller

Do I need to remove the nut or just the cartridge with the puller?

[Bjankowski]

Yes you might need a puller; looks like a Moen. I believe there is another nut in from of the cartridge you can unscrew, you can get a good hold with vise grips and it should pull out. I'm not a plumber but I'm a retired a general commercial general contractor for years and we did use moen fixtures most of the time.