P1664 BUICK – 1-4 Upshift Lamp Control Circuit

P1662 BUICK – Cruise Control Inhibit Control Circuit

P1661 BUICK – MIL Control Circuit

P1660 BUICK – Cooling Fans Control Circuit

P1657 BUICK – 1-4 Upshift Solenoid Control Circuit

P1658 BUICK – Starter Enable Relay Control Circuit

P1656 BUICK – Driver 2 Line 6

P1654 BUICK – Service Throttle Soon Lamp Control Circuit

P1652 BUICK – Powertrain Induced Chassis Pitch Output Circuit

P1653 BUICK – Oil Level Lamp Control Circuit

P1651 BUICK – Fan 1 Relay Control Circuit

P1650 BUICK – Driver 2-Input High Voltage

P1647 BUICK – Driver 1 Line 7

P1645 BUICK – EVAP Solenoid Output Circuit

P1644 BUICK – TP Output Circuit

P1643 BUICK – Engine Speed Output Circuit

P1640 BUICK – Driver 1-Input High Voltage

P1638 BUICK – Generator F-Terminal Circuit

P1637 BUICK – Generator L-Terminal Circuit

P1636 BUICK – PCM Stack Overrun