2001 LB7 fuel system/limp mode problem SOLVED

[maverick2]

Q: Did you buy his boost-valve to bring up boost slightly for the increased fuel rate?

No -- all efforts to date have focused on fixing the phantom limp mode problem. Available power and torque has never been an issue with this particular pickup, so haven't looked into any enhancements there. The bump in Hp with the Kennedy's base tune in the ECM I received is noticeable though and kinda fun.

[NutNbutGMC]

No -- all efforts to date have focused on fixing the phantom limp mode problem. Available power and torque has never been an issue with this particular pickup, so haven't looked into any enhancements there. The bump in Hp with the Kennedy's base tune in the ECM I received is noticeable though and kinda fun.

I had a 2001 LB7 and ran it for ~ 50K miles. That engine would flat get it. I didn't realize it until I traded it off for a 2002 crew cab. That (2002) particular LB7 was weaker and nothing but an injector destroyer.

I ditched it for a 2007 and the LBZ is turned up a bit (HP) but I havent driven it much since I bought it new in July 2007.