P1516Throttle Actuator Control (TAC) Performance
GM's electronic throttle actuator control (TAC) module detects the actual position does not match the commanded one.
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Can I keep driving? NO
STOP the vehicle in a safe place. Continuing to drive may cause serious engine damage or put your safety at risk.
Sistema Afectado
Motor · Powertrain
La falla pertenece al grupo motopropulsor (motor y gestión electrónica).
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Reduced power mode
- Limited acceleration
- Traction/engine light
Possible Causes
The components or conditions that trigger this code
- 1Dirty or faulty throttle body
- 2TPS sensor
- 3TAC wiring
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Clean the throttle body
- 2Relearn the throttle
- 3Replace the throttle body
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Varies by diagnosis
* Diagnosis only: $50–$150
Quick Info
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