MANUFACTURER REFERENCE

GMC code references — Page 3.

Read the source definition and confirm the exact vehicle, reporting module and diagnostic procedure.

Buick / Cadillac +5

A/C Evaporator Temperature Sensor Circuit Low Voltage

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Buick / Cadillac +5

A/C Evaporator Temperature Sensor Circuit High Voltage

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Cadillac / Chevrolet +4

A/C High Side Temperature Sensor Low Voltage

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Buick / Cadillac +5

A/C High Side Temperature Sensor Circuit

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Buick / Cadillac +5

A/C System ECT Overtemperature

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Buick / Cadillac +5

A/C Request Circuit Low Voltage

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Buick / Cadillac +5

A/C Request Circuit High Voltage

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Buick / Cadillac +5

Air Conditioning (A/C) Clutch Feedback Circuit High Voltage

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Buick / Cadillac +5

A/C System High Pressure

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Buick / Cadillac +5

A/C High Side Over Temperature

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Buick / Cadillac +5

A/C System High Pressure High Temperature

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Buick / Cadillac +5

A/C System Performance

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Buick / Cadillac +5

A/C Refrigerant Condition Very Low

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Buick / Cadillac +5

A/C Clutch Relay Control Circuit

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Buick / Cadillac +5

Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage

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Buick / Cadillac +5

A/C System Performance Degraded

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Buick / Cadillac +5

A/C Recirculation Circuit

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Buick / Cadillac +5

Cruise Engaged Circuit High Voltage

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Buick / Cadillac +5

Electronic Variable Orifice Output

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Buick / Cadillac +5

Cruise Control Servo Indicates Low

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Cadillac / Chevrolet +3

Cruise Control Power Management Mode

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Buick / Cadillac +5

Cruise Control System Transaxle Not In Drive

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Buick / Cadillac +5

Cruise Vent Solenoid

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Buick / Cadillac +5

Cruise Vacuum Solenoid

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Buick / Cadillac +5

Cruise Vehicle Speed Set Speed Difference Too High

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Buick / Cadillac +5

Cruise Control System Vehicle Accel Too High

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Buick / Cadillac +5

Cruise Servo Position Sensor

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Buick / Cadillac +5

Cruise Control System Engine RPM Too High

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Buick / Cadillac +5

Cruise Control System Active Braking Control Active

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Buick / Cadillac +5

Cruise Servo Stroke Greater Than Commanded In Cruise

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Buick / Cadillac +5

Cruise Servo Stroke High While Not In Cruise

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Buick / Cadillac +5

Cruise Control System Traction Control Active

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Buick / Cadillac +5

TCS PWM Circuit No Frequency

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Buick / Cadillac +5

ASR Active Circuit Low Too Long

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Buick / Cadillac +5

PCM EBTCM Serial Data Circuit

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Buick / Cadillac +5

Stoplamp Switch Circuit

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Buick / Cadillac +5

Extended Travel Brake Switch Circuit

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Buick / Cadillac +5

BBV Sensor Circuit High Voltage

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Buick / Cadillac +5

BBV Sensor Circuit Low Voltage

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Buick / Cadillac +5

BBV Sensor Circuit Low Vacuum

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Buick / Cadillac +5

P/N To D/R At High Throttle Angle

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Buick / Cadillac +5

Cruise Move Circuit Low Voltage

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Buick / Cadillac +5

Cruise Move Circuit High Voltage

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Buick / Cadillac +5

Cruise Direction Circuit Low Voltage

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Buick / Cadillac +5

Cruise Direction Circuit High Volume

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Buick / Cadillac +5

Cruise Control Disabled

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Buick / Cadillac +5

Cruise Inhibit Control Circuit

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Buick / Cadillac +5

Cruise Control Brake Switch 2 Circuit

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Buick / Cadillac +5

Cruise Control Clutch Control Circuit Low

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Buick / Cadillac +5

Cruise Control Clutch Control Circuit High

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Buick / Cadillac +5

Engine Stall Or Near Stall Detected

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Buick / Cadillac +4

PCM Battery

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Cadillac / Chevrolet +2

Serial Communication Problem With Device 1

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Buick / Cadillac +4

Loss Of EBTCM Serial Data

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Buick / Cadillac +4

Loss Of SDM Serial Data

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Buick / Cadillac +4

Loss Of IPC Serial Data

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Buick / Cadillac +4

Loss Of HVAX Serial Data

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Buick / Cadillac +4

Serial Communication Problem With Device 6

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Cadillac / Chevrolet +2

Serial Communication Problem With Device 7

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Buick / Cadillac +4

Serial Communication Problem With Device 8

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Buick / Cadillac +4

Loss Of TCS Serial Data

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Buick / Cadillac +4

Loss Of PZM Serial Data

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Buick / Cadillac +4

Loss Of CVRTD Serial Data

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Buick / Cadillac +4

Loss Of IPM Serial Data

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Buick / Cadillac +4

Loss Of DIM Serial Data

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Buick / Cadillac +4

Loss Of RIM Serial Data

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Buick / Cadillac +4

Loss Of VTD Serial Data

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Buick / Cadillac +4

Engine Oil Level Switch Circuit

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Buick / Cadillac +4

Engine Oil Life Monitor Reset Circuit

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Buick / Cadillac +4

Low Coolant Circuit

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Buick / Cadillac +4

PCM Memory Performance

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Buick / Cadillac +4

Cylinder Select

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Buick / Cadillac +4

Transmission Temp Pull-Up Resistor

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Buick / Cadillac +4

Customer Snapshot Data Available

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Buick / Cadillac +4

PCM System Reset

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Buick / Cadillac +4

Theft Deterrent Fuel Enable Signal Lost

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Buick / Cadillac +4

A/D Performance

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Buick / Cadillac +4

ECT Pull-Up Resistor

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Buick / Cadillac +4

Theft Deterrent System Cranking Signal

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Buick / Cadillac +4

Theft Deterrent Learn Mode Active

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Buick / Cadillac +4

Theft Deterrent Start Enable Signal Not Correct

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Buick / Cadillac +4

Theft Deterrent System Fuel Disabled

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Buick / Cadillac +4

Ignition Supply Power Circuit Low Voltage

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Buick / Cadillac +4

Ignition 1 Power Circuit Low Voltage

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Buick / Cadillac +4

5 Volt Reference 1 Circuit

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Buick / Cadillac +4

PCM Stack Overrun

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Buick / Cadillac +4

Generator L-Terminal Circuit

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Buick / Cadillac +4

Generator F-Terminal Circuit

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Buick / Cadillac +4

5 Volt Reference 2 Circuit

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Buick / Cadillac +4

Driver 1 Input High Voltage

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Buick / Cadillac +4

FC Relay 1 Control Circuit

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Buick / Cadillac +4

FC Relay 2 And 3 Control Circuit

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Buick / Cadillac +4

Engine Speed Output Circuit

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Buick / Cadillac +4

TP Output Circuit

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Buick / Cadillac +4

EVAP Solenoid Output Circuit

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Buick / Cadillac +4

Driver 1 Line 6

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Buick / Cadillac +4

Driver 1 Line 7

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Buick / Cadillac +4

Driver 2 Input High Voltage

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Buick / Cadillac +4

Fan 1 Relay Control Circuit

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Buick / Cadillac +4

Powertrain Induced Chassis Pitch Output Circuit

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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.