I have a few AVI training DVD's with manual for sale all in great shape. DURAMAX DIESEL LBT-263 UPDATE, DURAMAX DIESEL LBT-149 , GM SMART CHARGING SYS LBT-142, PARASITIC CURRENT DRAW LBT-270, WIRING SCHEMATICS INTERPRETATION LBT-269, ADVANCED TECH BATTERIES,ST... Login to read more.