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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Removal - Pickup & Van >> Removal & Installation >> 4.3L V6 Engines >> Removal & Installation ("G" & "P" Series)

Removal & Installation ("G" & "P" Series)

  1. Place transmission gear selector in Park (Neutral on manual transmissions). Set parking brake and block drive wheels. Although fuel pressure drops to zero when ignition is turned off, loosen fuel filler cap to relieve tank pressure. To further minimize risk of fire and personal injury, cover surrounding areas with a shop rag while removing fuel lines.
    WARNING: To avoid possible personal injury and fire danger, fuel pressure must be relieved as outlined in step 1).
  2. Remove glove box and engine cover. Disconnect battery and drain cooling system. Remove outside air duct and air cleaner. Remove power steering reservoir, hood release cable and upper fan shroud bolts. Disconnect overflow hoses. Disconnect transmission oil cooler lines at radiator.
  3. Remove upper fan shroud, fan and pulley. Remove heater hoses, radiator hoses and radiator. Remove cruise control servo and brake booster vacuum hose at TBI unit. Disconnect accelerator and throttle valve cables. Disconnect fuel line and vacuum hoses at TBI unit.
  4. Remove TBI unit and distributor cap. Disconnect air injection hoses at diverter valve. Remove diverter valve. Disconnect PCV valve. Label and disconnect remaining vacuum hoses. Label and disconnect engine electrical harness. Discharge A/C system.
  5. Remove A/C compressor brace and compressor. Remove upper half of oil dipstick tube. Remove oil filler tube and transmission dipstick tube. Disconnect and plug fuel lines at fuel pump. Remove power steering pump.
  6. Remove headlight bezels and grille. Remove upper radiator support, lower filler panel and hood latch support. Disconnect A/C lines at condenser. Remove condenser. Raise vehicle. Drain engine oil. Disconnect exhaust pipe at exhaust manifolds.
  7. Disconnect strut rods at flywheel inspection cover. Remove flywheel inspection cover, starter and torque converter mounting bolts (if equipped). Remove motor mount through bolts and bellhousing bolts. Lower vehicle. Support transmission. Install lift equipment and remove engine.
  8. To install, reverse removal procedure. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS table in this article.
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