Can anyone help with theses codes p2090,p2088,p0245,p0236 its a 08 lnf wont boost past 5lbs and i tried checking the wiring to the lower tmap senser its plugged in all wires showed ground i checked boost solenoids on the wastegate one wire shows ground on that plug, the intake manifold boost solenoid shows ground on both wires i re soldered the wires going to the top map sensor on the manifold. I dont knkw alot on this lnf platform i ha e had my lsj 06 cobalt that i previously resurrected from the grave but i traded that for this 08 lnf. Any help is grwatly appreciated and if anyone is out here in the phoenix area let me know i could use the help thxs, any ideas