GMC fault codes
Coverage shown is GM data: 17,703 codes · 2,212 vehicle records · 180 ECU records · 10,756 live-data parameters.
GMC shares fault-code data with GM. Data may not cover GMC-specific systems.
Codes 17,703
| Code | Description | Brands | System |
|---|---|---|---|
| P1915 | Reverse Switch Circuit Malfunction | 24 | Powertrain |
| P1916 | Gear shift position circuit B low | 17 | Powertrain |
| P1917 | Gear shift solenoid valves | 19 | Powertrain |
| P1918 | Transmission Range Display Circuit Malfunction | 19 | Powertrain |
| P1919 | Engine Coolant Temperature Signal | 19 | Powertrain |
| P191A | Loss of crankshaft synchronization | 14 | Powertrain |
| P191C | App clutch speed even consistency too high | 12 | Powertrain |
| P191E | Battery heating system fault | 10 | Powertrain |
| P191F | Pressure sensor for brake booster: electrical malfunction; Mechanical failure | 11 | Powertrain |
| P1920 | Engine mounting control solenoid banks 1 & 2 -open circuit/short to earth | 17 | Powertrain |
| P1921 | Transmission Range Signal | 15 | Powertrain |
| P1922 | Fuel Additive Level Circuit | 20 | Powertrain |
| P1923 | Engine control module (ECM) 2 - malfunction | 21 | Powertrain |
| P1926 | Relay for aux coolant pump (J496): short to ground; Open circuit | 19 | Powertrain |
| P1927 | Relay for aux coolant pump (J496): open circuit; Implausible signal | 21 | Powertrain |
| P192A | Auxiliary coolant pump in high-temp circuit: running dry | 8 | Powertrain |
| P192B | Auxiliary coolant pump in high-temp circuit: mechanical malfunction; Defective | 8 | Powertrain |
| P192E | Auxiliary coolant pump in low-temp circuit: mechanical malfunction; Short to plus | 8 | Powertrain |
| P192F | Auxiliary coolant pump in low-temp circuit: over-temp; Open or short to ground | 8 | Powertrain |
| P1932 | Powertrain databus: implausible message from contr. for access & start Auth. | 18 | Powertrain |
| P1933 | Throttle Actuator 2: Malfunction | 19 | Powertrain |
| P1937 | Generator shut-off: short to plus; Upper limit exceeded | 15 | Powertrain |
| P1938 | Auxiliary Engine Coolant Pump Relay (J496): Open or Short to Ground | 16 | Powertrain |
| P193B | Kroppslydaktuator | 9 | Powertrain |
| P193C | Steering wheel angle signal | 9 | Powertrain |
| P193D | Cruise Control Multi-Function Input Signal | 9 | Powertrain |
| P193E | A/C Clutch Request Signal | 9 | Powertrain |
| P193F | Araç hız sinyali kesintili | 8 | Powertrain |
| P1940 | Powertrain Databus: Missing Message from Control Module for Battery Monitoring | 16 | Powertrain |
| P1941 | Powertrain Databus: Implausible Message from Controller for Batt. Monitoring | 16 | Powertrain |
| P1942 | Powertrain Databus: Missing Message from Level Control System | 16 | Powertrain |
| P1943 | Powertrain Databus: Implausible Message from Level Control System | 16 | Powertrain |
| P1944 | Control module 1 for cooling fan: over-temp; Implausible signal | 14 | Powertrain |
| P1945 | Control module 1 for cooling fan: output short circuit; Open circuit | 13 | Powertrain |
| P1951 | Radiator Fan 2 (V177): Movement Restricted / Jammed | 13 | Powertrain |
| P1952 | Turbocharger Control Module 1: Defective | 13 | Powertrain |
| P1953 | Turbocharger Control Module 2: Defective | 13 | Powertrain |
| P1954 | Glow plug control module 2 (J703): malfunction in glow plug circuit; Mechanical failure | 12 | Powertrain |
| P195B | actuator | 8 | Powertrain |
| P195C | Giraktuator | 8 | Powertrain |
| P1960 | Exhaust Gas Temperature Regulation Bank 3: Control Limit Exceeded | 12 | Powertrain |
| P1961 | Exhaust Gas Temp Sensor 2 Bank 2 (G449): Electrical Malfunction | 16 | Powertrain |
| P1962 | Exhaust Gas Temp Sensor 2 Bank 2 (G449): Short to Ground | 14 | Powertrain |
| P1963 | Exhaust Gas Temp Sensor 2 Bank 2 (G449): Short to Plus | 14 | Powertrain |
| P1964 | Exhaust Gas Temp Sensor 2 Bank 2 (G449): Implausible Signal | 14 | Powertrain |
| P1965 | Exhaust Gas Temperature Regulation Bank 4: Control Limit Exceeded | 15 | Powertrain |
| P1966 | Relay for Secondary Air Injection Pump 3 (J704): Open Circuit | 14 | Powertrain |
| P1967 | Relay for Secondary Air Injection Pump 3 (J704): Short to Plus | 14 | Powertrain |
| P1968 | Relay for Secondary Air Injection Pump 3 (J704): Short to Ground | 14 | Powertrain |
| P1969 | Relay for Secondary Air Injection Pump 3 (J704): Electrical Malfunction | 14 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.