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Home >> Buick >> 1990 >> Reatta 2D Convertible, 4T60/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - BCM >> BCM Trouble Code Charts >> Code B671, Cruise Servo Position Sensor Circuit >> Note on Intermittents

Note on Intermittents

If an intermittent Code B671 is being set, manipulate related wiring while observing BD70 display. If failure is induced, reading will jump from its normal value to a reading less than 3 percent.

Fig 1: Code B671: Circuit Diagram
G90D21785
Fig 2: Code B671: Flow Chart Cruise Servo Position Sensor Circuit
G90A14639