K 1500 Truck 4WD V8-5.7L VIN R (1997)
Evaporative Fuel Vapor Return Hose: Description and Operation
The EVAP pipe is secured to the underbody with clamp and screw assemblies. Flexible hoses are connected at the fuel tank and the EVAP canister. The
pipe should be inspected occasionally for leaks, kinks, or dents and repaired as required.