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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCADILLAC1985FLEETWOOD BASE, 4D LIMOUSINEREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSA/C-HEATER SYSTEM - AUTOMATIC (FWD)
1985 Cadillac Fleetwood Base, 4D Limousine
A/C-Heater System - Automatic (Fwd)
1985 Cadillac Fleetwood Base, 4D LimousineSECTION A/C-Heater System - Automatic (Fwd)
- Description
- Operation
- Adjustment
- Trouble Shooting
- Telltale Control "Service Air COND"
- Self Diagnosis System
- Retrieving Stored Trouble Codes
- Notes
- Entering Diagnostic Mode
- Status Light Display
- "Auto"
- "Econ"
- "Off"
- "Front Defog"
- "Rear Defog"
- "Outside Temp"
- "Auto Fan"
- "Hi Fan"
- "Lo Fan"
- "°F"
- "°C"
- Exiting Diagnostic Mode
- Clearing ECM Trouble Codes
- "BCM" Codes
- Code ".7.0"
- BCM Data Display
- "P.2.0"
- "P.2.1"
- "P.2.2"
- "P.2.4"
- "P.2.5"
- "P.2.6"
- "P.2.7"
- "P.2.8"
- "P.2.9"
- "P.3.0"
- "P.3.1"
- ECC Program Override
- Testing
- Removal & Installation
- Wiring Diagrams
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.