Preliminary Information

1996 Buick Roadmaster BaseSECTION Preliminary Information

Enter diagnostic mode by pressing OFF and TEMP up buttons at the same time. Using fan up or fan down button, select pointer number "-15". Press MIDDLE button to display current learn value. Press TEMP down and VENT buttons at the same time to enter LEARN MODE, (°F/°C will illuminate). Press TEMP up or TEMP down to change temperature calibration test offset. The learn value can be changed plus or minus 5°F (3°C). To lock new learn value into A/C-heater control panel, press and hold VENT and front defrost buttons for 5 seconds. Value will blink off and on, indicating a new learn value has been locked into memory.

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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.