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 MANUALSCHEVROLET1987S10/T10 BLAZER 4WD V6-173 2.8LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGHEATER CORESERVICE AND REPAIR
1987 Chevrolet S10/T10 Blazer 4WD V6-173 2.8L
Heater Core: Service and Repair
1987 Chevrolet S10/T10 Blazer 4WD V6-173 2.8LSECTION Service and Repair
HEATER CORE REPLACEMENT
REMOVE OR DISCONNECT
1. Coolant from the radiator.
2. Inlet and Outlet Hoses. Refer to "Heater Hose Replacement".
- Plug or cap the hoses to prevent spillage.
3. Rear cover and screws.
4. Brackets.
5. Core.
INSTALL OR CONNECT
1. Core.
2. Brackets.
3. Rear cover and screws.
TIGHTEN
- Screws to 3 Nm (27 lb in).
4. Inlet and Outlet Hoses. Refer to "Heater Hose Replacement".
5. Coolant to the radiator.
RENDER: 1.0x
NO RELATED
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.