I am very new to the tuning world and this forum, so please bear with me. Mods please move if in the wrong category.
I am working with a 98 S10 ZR2 truck, it has a custom built 4.3 with an 0411 pcm upgrade running 02 blazer OS. My question is the fuel pump runs for no less than 30 sec after shutdown. I know the pump will run a few seconds after shutdown, but this seems excessive. Is this normal?? Where in the tune can I find this setting? I have searched but have not found it. What am I missing?

Thanks in advance for any help you all can provide.

Derek

4.3L Vortec
0411 PCM
.020 over bore
Comp 266HR cam
Comp roller tip rockers
Volant cold Air Intake
Mercury Marine intake manifold
JBA stainless shorty headers
Borla full exhaust with high flow cat