OBD code P1516 for GMC indicates a problem with the Throttle Actuator Control Module.
Symptoms include the Engine Light ON, lack of throttle response.
Causes may include a binding or bent Throttle Plate, faulty Throttle Body Assembly, or issues with the wiring harness.
This issue is serious as it affects engine performance.
A possible fix is to inspect and repair any damaged components or wiring connections related to the Throttle Body Assembly.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 6.67 (Out of 10) |
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Symptoms of the Gmc p1516 OBD Code
The vehicle may experience poor idling or stalling when Specific fault/error code GMC P1516 is present.
- Symptoms: Engine Light ON.
- No throttle response.
Causes of the Gmc p1516 OBD Code
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Fault code P1516 on a GMC typically indicates an issue with the throttle actuator control module performance.
- P1516 can be caused by a binding or bent Throttle Plate.
- A faulty Throttle Body Assembly.
- The Throttle Body Assembly harness being open or shorted.
- A Throttle Body Assembly circuit with a poor electrical connection.
- Or a faulty Engine Control Module (ECM).
Fixing Gmc Error Code p1516 Step By Step
Address the faulty throttle actuator control module performance by inspecting and potentially replacing it.
- To fix GMC OBDII code P1516, first, review the possible causes mentioned above.
- Visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring, consider resetting the electronic throttle control module.
- Perform a throttle body relearn procedure using a scan tool.
- If the problem persists, the electronic throttle control module may need to be replaced.
Cost Of Fixing Gmc p1516 Fault Code
Diagnosing and repairing GMC P1516 typically involves testing and replacing the throttle actuator control module.
The cost to diagnose and fix a GMC OBD code P1516 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the repair.
Details of the Gmc p1516 OBD Code
GMC P1516 code indicates a problem with the throttle actuator control module performance.
GMC OBD code P1516 means Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance.
This code is triggered by the Engine Control Module (ECM) when it detects a performance issue with the throttle actuator position signal.
The throttle actuator control module is responsible for controlling the throttle plate opening angle in response to driver inputs.
The ECM monitors the signal from the throttle actuator position sensor to ensure that the actual throttle position matches the desired position.
If the ECM detects that the throttle actuator position signal is not within the expected range or is not changing as commanded, it will trigger code P1516. This can be caused by issues with the throttle actuator itself, wiring/connectors, or the throttle position sensor.
When diagnosing this code, technicians typically check the throttle actuator for proper operation, inspect the wiring and connectors for any damage or corrosion, and test the throttle position sensor for accuracy.
Mechanic’s Tech Notes
Detailed information on GMC P1516 code, including symptoms, causes, and solutions for effective troubleshooting.
OBDII code P1516 for GMC typically indicates an issue with the Throttle Actuator Control Module (TACM).
To diagnose, use a voltmeter to check TACM power and ground circuits for proper voltage and continuity.
Utilize a scan tool to monitor TACM data and ensure it communicates over the Controller Area Network (CAN) network.
Visually inspect wiring harnesses and connectors for any damage, corrosion, or loose connections.
If no visible issues are found, consider reprogramming or replacing the TACM as a potential fix.
FAQ
Common symptoms of OBD code P1516 in a GMC vehicle include Engine Light ON, no throttle response. Causes may include binding throttle plate, faulty throttle body assembly.
The typical root cause of OBD code P1516 in a GMC vehicle is a faulty Throttle Body Assembly or a poor electrical connection in the Throttle Body Assembly circuit.
To diagnose and repair OBD code P1516 in a GMC vehicle, check throttle plate, throttle body, wiring harness, connectors, and ECM for issues. Repair as needed.
Wrap Up
If your GMC is displaying OBD code P1516, you may experience issues like reduced engine power, stalling, or rough idling.
This code is often caused by a faulty throttle actuator control module, throttle position sensor, or wiring problems in the throttle body circuit.
To address GMC OBD code P1516, check the throttle body wiring harness for any signs of damage or corrosion.
Test the throttle position sensor and throttle actuator control module for proper operation.
Replace any faulty components and ensure all connectors are securely attached.
