I need LB7 Duramax help

Nampa ID

Description

I need help, charitable or otherwise. I have an '02 Silverado 2500hd with a 6.6l turbo Duramax. It appears to be in limp mode. So far I've replaced: Fuel pressure regulator. Fuel Injection Control Module. Two new batteries. Now the scanner shows mass air flow and glow plug circuit codes. Can't get it past 1200 or so rpms. I was able to drive it about two miles with greatly reduced power. But now there's almost no power and won't get past first gear. Is there ANYONE out there that can help? Have you "been there, done that" and didn't have to buy a hand grenade?🤪 I've put $1000 in it trying to fix it. Time is running out cause I have to move my fifth wheel trailer but my truck can't even move itself. HELP! Feel free to text, email or call. 208-447-86three8 Thanks in advance!