u/henryford1999

Put a new valve body in my 21 3.0babymaxx 10l80 trans and didn’t fix the overdrive issue where it fails to lockup converter so having to find a transmission. Is my best option a new transmission from gm or getting it rebuilt. Either way it $5500-$7500

▲ 3 r/gmcsierra

Put a new valve body in my 21 3.0babymaxx 10l80 trans and didn’t fix the overdrive issue where it fails to lockup converter so having to find a transmission. Is my best option a new transmission from gm or getting it rebuilt. Either way it $5500-$7500

u/henryford1999 — 2 days ago

▲ 17 r/gmcsierra

2020 Silverado 1500 lm2 duramax. Had it to three shops, changes ecm, tcm and all grounds are perfect. I can’t figure out what it is and the shops had it for a week running through wiring anybody else had same issues and resolved it

u/henryford1999 — 2 months ago