Duramax Lifetime Supporter
Join Date: Apr 2012
Location: Cameron MT
You mean the tab on the bottom of the fuel filter?
its the small black plastic tab on top of the filter body, use a larger blade screw driver to crack it open, no need to fully remove it, just crack it open and pump away, once fuel starts running out, screw it tight again, hope this helps.
'MONGO' '02 2500HD 4X4 CC/SB
Built transmission - GOS Performance; Suncoast 6 speed conversion
Flex-A-Lite 284 Electric Fans; Mean Green Alternator
4" MBRP Exhaust; MBRP Downpipe; BD Power Exhaust Manifold
BatMoWheel (stock turbo housing), PPE Boost Valve
ProFlow Air Horn; aFe cold air intake
Edge Insight CTS with EAS expansion system, EGT, Boost & Ambient Temp; EFILive via CTS - Idaho Rob
AirDog II DF-165
Firestone Ride Rite air helper springs