S15/T15 Sonoma P/U 2WD V6-262 4.3L VIN Z TBI (1995)
Fuel Return Line: Description and Operation
The fuel return pipes and hoses extend from the fuel pump and sender to the injection unit and are routed along the frame side member.
The vapor pipe and hoses extend from fuel pump and sender unit to the Evaporative Emission (EVAP) control vapor canister