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If you are looking for Idle Learn. Here is the procedure for 1990 Eldorado.
# Place the vehicle transmission in drive wither the brakes applied. # Place vehicle climate control in the OFF position and allow the engine to remain at IDLE for at least one minute. # Make sure the outside air temperature reading is at least 50°F. Place the vehicle climate control in the AUTO position, verify A/C clutch engagement, and allow the engine to remain at IDLE for at least one minute. # Place the3 transmission in Park and turn off the ignition.
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garage
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