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 MANUALSGMC1972P25/P2500 VAN 5.0L ENG VIN FREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)ENGINE COOLING SYSTEMSWATER PUMP1965-74 ALL MODELSINSTALLATION
1972 GMC P25/P2500 Van 5.0L Eng VIN F
1965-74 All Models: Installation
1972 GMC P25/P2500 Van 5.0L Eng VIN FSECTION Installation
Clean gasket surfaces, install new hoses (as required) and gaskets. Reverse removal procedure, tighten bolts, adjust drive belt tension and refill cooling system.
TIGHTENING SPECIFICATIONS
| Application | Ft. Lbs. | ||
|---|---|---|---|
| Water Pump Attaching Bolts | |||
| 1965-66 | |||
| 4 Cyl. & 6 Cyl. | 13-17 | ||
| V8 | 25-35 | ||
| 1967-69 | |||
| 6 Cyl. | 15 | ||
| V8 | 30 | ||
| 1970-74 | |||
| 6 Cyl. | INCH Lbs. 15 | ||
| V8 | 30 | ||
RENDER: 1.0x
NO RELATED
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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.