Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Chevrolet SSR BaseFACTORY OEM SERVICE PROCEDURE
Engine Control System - 5.3L (DTC P0601 - U0107)
- Diagnostic Information & Procedures
- DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610: ECU Malfunction
- DTC P0641: 5 Volt Reference 1 Circuit
- DTC P0650: Malfunction Indicator Lamp (MIL) Control Circuit
- DTC P0651: 5 Volt Reference 2 Circuit
- DTC P1106: Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
- DTC P1107: Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- DTC P1111: Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
- DTC P1112: Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage
- DTC P1114: Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage
- DTC P1115: Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage
- DTC P1125: Accelerator Pedal Position (APP) System
- DTC P1133 or P1153: HO2S Insufficient Switching
- DTC P1134 or P1154: HO2S Transition Time Ratio
- DTC P1380: Misfire Detected - Rough Road Data Not Available
- DTC P1381: Misfire Detected - No Communication with Brake Control Module
- DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
- DTC P2101: Throttle Actuator Position Performance
- DTC P2108: Throttle Actuator Control (TAC) Module Performance
- DTC P2120: Accelerator Pedal Position (APP) Sensor 1 Circuit
- DTC P2121: Accelerator Pedal Position (APP) Sensor 1 Performance
- DTC P2125: Accelerator Pedal Position (APP) Sensor 2 Circuit
- DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation
- DTC U0107: Lost Communications With Throttle Actuator Module
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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