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 MANUALSPONTIAC1987FIERO BASE, STANDARD, MG3REPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATER SYSTEM
1987 Pontiac Fiero Base, Standard, MG3
Heater System
1987 Pontiac Fiero Base, Standard, MG3SECTION Heater System
- Model Identification
- Description
- Operation
- Adjustments
- Trouble Shooting & Diagnosis
- Removal & Installation
- Control Panel
- Heater Core
- Notes
- Removal & Installation ("A" Bodies)
- Removal & Installation ("B" Bodies)
- Removal & Installation ("F" Bodies)
- Removal & Installation ("G" Bodies)
- Removal & Installation ("J", "T" Bodies)
- Removal & Installation ("L" Bodies)
- Removal & Installation ("N" Bodies)
- Removal & Installation ("P" Bodies)
- Removal & Installation ("S" Bodies)
- Blower Motor
- Wiring Diagrams
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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.