Jim Taddei
Jim Taddei has been in the automotive field since 1975 and has over 25 years of experience with General Motors products, achieving the designation of GM Master Technician. He is also currently certified as an ASE Master Technician, and holds an Advanced California Smog Check License. He has been the lead technician and team leader at a multi-line dealership. After leaving the dealership he spent a couple of years working in an independent shop and now uses his experience and expertise to help verify the quality of RepairPal Certified shops.
Posts by Jim Taddei
Torque Converter Clutch Brake Switch Circuit Error The ECM monitors the Torque Converter Clutch Brake switch to determine if the brakes are applied or not. It uses this signal to help determine if the the Torque Converter Clutch should be applied.
Torque Converter Clutch Brake Switch Circuit Error The ECM monitors the Torque Converter Clutch Brake switch to determine if the brakes are applied or not. It uses this signal to help determine if the the Torque Converter Clutch should be applied.
Torque Converter Clutch Brake Switch Circuit Error The ECM monitors the Torque Converter Clutch Brake switch to determine if the brakes are applied or not. It uses this signal to help determine if the Torque Converter Clutch should be applied.
Torque Converter Clutch Brake Switch Circuit Error The ECM monitors the Torque Converter Clutch Brake switch to determine if the brakes are applied or not. It uses this signal to help determine if the Torque Converter Clutch should be applied.
Mass Air Flow Sensor Error 24x Crankshaft Position Sensor Circuit Error 4T60-E Shifting Error Depending on the model, code 36 can refer to three different systems. Please choose from one of the above links for specific information on each system.
Mass Air Flow Sensor Error 24x Crankshaft Position Sensor Circuit Error 4T60-E Shifting Error Depending on the model, code 36 can refer to three different systems. Please choose from one of the above links for specific information on each system.
Ignition Control Error MEM-CAL Error [Computer Controlled Ignition Cam Sensor Signal Error ](/gm-obd-code-41#camsensorsignal_error) Depending on the model, code 41 can refer to three different systems. Please choose from one of the above links for specific information on each system.
Ignition Control Error MEM-CAL Error [Computer Controlled Ignition Cam Sensor Signal Error ](/gm-obd-code-41#camsensorsignal_error) Depending on the model, code 41 can refer to three different systems. Please choose from one of the above links for specific information on each system.
Ignition Bypass Circuit Error The ECM monitors the Ignition Bypass circuit and will set code 42 to signal an error. The ignition bypass circuit allows the ECM to switch the ignition module from "base" timing to computer-controlled timing advance.
Ignition Bypass Circuit Error The ECM monitors the Ignition Bypass circuit and will set code 42 to signal an error. The ignition bypass circuit allows the ECM to switch the ignition module from "base" timing to computer-controlled timing advance.
Knock Sensor Error The ECM receives a signal from the Knock sensor based on the amount of engine ping detected. The ECM uses information from this sensor to help calculate fuel delivery and spark timing.
Knock Sensor Error The ECM receives a signal from the Knock sensor based on the amount of engine ping detected. The ECM uses information from this sensor to help calculate fuel delivery and spark timing.
Oxygen Sensor Error (Lean Condition Indicated) The ECM receives a signal from the O2 sensor based on the amount of oxygen in the exhaust. If there is excess oxygen in the exhaust, it is in lean condition and the O2 sensor voltage will be low.
Oxygen Sensor Error (Lean Condition Indicated) The ECM receives a signal from the O2 sensor based on the amount of oxygen in the exhaust. If there is excess oxygen in the exhaust, it is in lean condition and the O2 sensor voltage will be low.
Oxygen Sensor Error (Rich Condition Indicated) The ECM receives a signal from the O2 sensor based on the amount of oxygen in the exhaust. If there is little oxygen in the exhaust, it is in rich condition and the O2 sensor voltage will be high.
Oxygen Sensor Error (Rich Condition Indicated) The ECM receives a signal from the O2 sensor based on the amount of oxygen in the exhaust. If there is little oxygen in the exhaust, it is in rich condition and the O2 sensor voltage will be high.
Pass-Key II System Error - Circuit out of Frequency Range The ECM receives a signal from the Pass-Key module. When the correct signal is received, the ECM will allow the engine to start and run.
Pass-Key II System Error - Circuit out of Frequency Range The ECM receives a signal from the Pass-Key module. When the correct signal is received, the ECM will allow the engine to start and run.
UART (Serial Data) Circuit Error The Serial Data circuit allows the ECM to communicate with other vehicle modules and permits the sharing of information between the modules. Code 47 will be set if the ECM determines there is a fault with the Serial Data circuit.
UART (Serial Data) Circuit Error The Serial Data circuit allows the ECM to communicate with other vehicle modules and permits the sharing of information between the modules. Code 47 will be set if the ECM determines there is a fault with the Serial Data circuit.
Incorrect MEM-CAL / PROM Error The PROM and the MEM-CAL basically serve the same function. The PROM was used in earlier model years and the MEM-CAL was used in later model years.
Incorrect MEM-CAL / PROM Error The PROM and the MEM-CAL basically serve the same function. The PROM was used in earlier model years and the MEM-CAL was used in later model years.
Fuel cal-pak incorrect or missing If the ECM detects an internal fault with the Fuel cal-pak or the Fuel cal-pak is missing, code 52 will set. The Fuel cal-pak is a special "chip" that is installed in the ECM, based on the particular vehicle configuration.
Fuel cal-pak incorrect or missing If the ECM detects an internal fault with the Fuel cal-pak or the Fuel cal-pak is missing, code 52 will set. The Fuel cal-pak is a special "chip" that is installed in the ECM, based on the particular vehicle configuration.
System voltage too high Digital EGR valve solenoid 1 error Depending on the model, code 53 can refer to two different systems. Please choose from one of the above links for specific information on each system.
System voltage too high Digital EGR valve solenoid 1 error Depending on the model, code 53 can refer to two different systems. Please choose from one of the above links for specific information on each system.
Fuel pump circuit low voltage Digital EGR valve solenoid 2 error Depending on the model, code 54 can refer to two different systems. Please choose from one of the above links for specific information on each system.
Fuel pump circuit low voltage Digital EGR valve solenoid 2 error Depending on the model, code 54 can refer to two different systems. Please choose from one of the above links for specific information on each system.
Engine Control Module error Digital EGR valve solenoid 3 error Depending on the model, code 55 can refer to two different systems. Please choose from one of the above links for specific information on each system.
Engine Control Module error Digital EGR valve solenoid 3 error Depending on the model, code 55 can refer to two different systems. Please choose from one of the above links for specific information on each system.