Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1987FORWARD CONTROL 4.8 T, AUTOMATIC, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICALENGINE REMOVAL - V6REMOVAL & INSTALLATION4.3LASTRO & SAFARI
1987 Chevrolet Forward Control 4.8 T, Automatic, 400/M40
Astro & Safari
1987 Chevrolet Forward Control 4.8 T, Automatic, 400/M40SECTION Astro & Safari
- Disconnect negative battery cable. Drain cooling system. Raise vehicle. Disconnect exhaust pipe at exhaust manifolds. Disconnect starter and strut rods. Remove flywheel inspection cover, torque converter bolts and oil filter.
- Disconnect harness at transmission and frame. Disconnect and plug fuel lines. Disconnect transmission and engine oil cooler lines at radiator. Remove lower fan shroud bolts. Remove motor mount through bolts and bellhousing bolts. Lower vehicle. Remove headlight bezels and grille.
- Remove radiator lower close-out panel and support braces. Remove lower tie bar. Remove hood latch mechanism. Disconnect master cylinder and set aside. Remove radiator hoses, fan shroud, radiator and upper radiator core support..
- Discharge A/C system. Remove radiator filler panels. Remove engine cover and rear brace of A/C compressor. Disconnect A/C hose at accumulator. Remove A/C compressor and bracket. Remove power steering pump.
- Label and disconnect necessary vacuum hoses. Disconnect wiring harness at bulkhead. Remove right kick panel. Disconnect wiring harness at ESC module and push through bulkhead. Remove distributor cap and A/C accumulator. Disconnect fuel line at TBI unit.
- Disconnect and remove diverter valve. Remove transmission dipstick tube. Disconnect heater hoses at heater core. Remove horn. Remove air injection check valves. Install engine lifting device. Support transmission. Remove engine.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.