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1995 Buick Riviera 3.8L MIL Lamp on
Posted to GM Driveability on 7/14/2002 8 Replies

vechicle came in stalling & hard starting intermittently. and ck eng light on for code [...] also checked the wiring harnes for damaged wires(found none).so we replaced the cranksensor for the stalling & hard starting,which fixed that [...] also replaced the e...

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car Vehicle Data

1995 Buick Riviera

VIN 1G4GD22195
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.Supercharger

Trouble Codes

P1640Output Driver Module 'A' Circuit Malfunction
Message Closed

car Vehicle Data

1995 Buick Riviera

VIN 1G4GD22195
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.Supercharger

Trouble Codes

P1640Output Driver Module 'A' Circuit Malfunction