148K on my '02. Getting metal shavings on the crank sensor causing starting problems. Shop says I need new ring gear and starter which requires pulling the tranny....$$$$
I've replaced ring gears on my old Chev 350. How involved is this for a DIY project???
Thanks!
RT

 

With that mileage you'll have some shards on the pick-up. Unless you have gaps/missing teeth on the gear or other cranking issues, blow the shavings out of the bell housing and keep on going.
Otherwise, it's a major/expensive pain, R&R the flywheel and starter.
How do you get to the flywheel? Take a wild guess.
ED7

 

Got it...any idea on accessing the cam position sensor to wipe it off? They said it's magnetic so the shavings build up on it and interfere with starting.
Thx,
RT

 

They pulled it to clean it already, yes?
There should be a lower cover on the bell housing to open.
Pull both and blow compressed air with a long schnozzle in the top and out the bottom to push the chips out, wipe the sensor and back together again.
You'll get most of it.
ED7

 

Yes, they have. Thx for the info!
RT