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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 4.3L V6 - VIN [Z] >> Removal & Installation >> Engine >> Removal & Installation ("P" series: Parcel Truck)

Removal & Installation ("P" series: Parcel Truck)

NOTE: Engine and transmission are removed as an assembly through the side door.
  1. Release fuel system pressure. See FUEL PRESSURE RELEASE. Disconnect battery. Drain cooling system. Remove engine cover and floor panel sections.
  2. Remove air cleaner, duct and exhaust heat stove pipe. Remove distributor cap and set aside. Disconnect all engine harness electrical connectors and set aside. Disconnect fuel lines from throttle body injection unit. Remove fuel line clamps from transmission and set fuel lines aside.
  3. Disconnect ground strap from rear end of left cylinder head. Disconnect all transmission harness electrical connectors and set harness aside. Remove transmission shifter (if necessary). Remove upper radiator hose, all accessory drive belts, fan, fan pulley, fan shroud and lower radiator hose.
  4. Remove engine oil filler tube. Remove clutch adjuster rod, return spring and pivot arm assembly (M/T). Disconnect exhaust pipes from manifolds. Disconnect battery cable from clamp on cylinder block. Disconnect drive shaft from transmission. Remove transmission mount.
  5. Disconnect oil cooler lines from oil filter adapter and oil cooler line clamps from engine. Attach engine hoist. Remove engine mount through-bolts. Remove engine and transmission assembly through side door. To install, reverse removal procedure. Fill crankcase and cooling system.
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