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 MANUALSGMC1984SUBURBAN K2500, 5.7 M, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - THM 400TRANSMISSION REASSEMBLYOIL PUMP
1984 GMC Suburban K2500, 5.7 M, Standard
Oil Pump
1984 GMC Suburban K2500, 5.7 M, StandardSECTION Oil Pump
- Install gasket on transmission case. Install forward clutch and oil pump assembly in transmission case. Install oil pump-to-case bolts except bolt in 10 o'clock position to check end play. See Fig 1. Tighten bolts to 18 ft. lbs. (24 N.m).
RENDER: 1.0x
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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.