P1603 GMC – Loss of SDM Serial Data

P1601 GMC – Serial Comm. Problem With Device 1

P1600 GMC – TCM Internal Watchdog Operation

P1599 GMC – Engine Stall or Near Stall Detected

P1587 GMC – Cruise Control Clutch Control Circuit Low

P1588 GMC – Cruise Control Clutch Control Circuit High

P1586 GMC – Cruise Control Brake Switch 2 Circuit

P1585 GMC – Cruise Control Inhibit Output Circuit

P1584 GMC – Cruise Control Disabled

P1583 GMC – Cruise Direction CircuitHigh Voltage

P1582 GMC – Cruise Direction Circuit Low Voltage

P1581 GMC – Cruise Move Circuit High Voltage

P1579 GMC – P/N to D/R at High Throttle Angle – Power Reduction Mode Active

P1580 GMC – Cruise Move Circuit Low Voltage

P1578 GMC – BBV Sensor Ckt. Low Vacuum

P1577 GMC – BBV Sensor Ckt. Low Voltage

P1575 GMC – Extended Travel Brake Switch Circuit

P1576 GMC – BBV Sensor Ckt. High Voltage

P1574 GMC – Stoplamp Switch Circuit

P1573 GMC – PCM/EBTCM Serial Data Circuit