This vehicle generates 142 kW power at 4,400 rpm. The following schematic shows the 1999 4.3L GMC Jimmy Engine Block Cylinder Head Components Assembly and Parts Diagram. 1. CYLINDER HEAD 2. HEAD GASKET 3. VALVE COVER 4. VALVE COVER GASKET 5. INTAKE VALVE 6. EXHAUST VALVE 14. CAMSHAFT 15. BEARINGS 16. FRONT COVER SEAL
