Where is the throttle actuator control module?

The TAC module is mounted on the driver’s side firewall under the corner brace.

What does a TAC module do?

The APP sensors are used to calculator throttle accelerator pedal position. This information is used by the TAC to determine control of the throttle motor. The TAC communicates with the other modules throughout the vehicle, via the Controller Area Network (CAN) bus.

What are common problems with Chevy Impalas?

Here are some of the most common issues experienced by Impala drivers.

• Gas cap problems. Scotty Kilmer.
• Faulty instrument panel gauges. Another common problem for the Impala is an erratic speedometer.
• Jolting.
• Shifter malfunction.
• Bad transmission pressure control solenoid.

How do I know if my throttle actuator is bad?

Symptoms of a Bad or Failing Throttle Kicker Actuator

1. Throttle hesitation. Most of the time, the engine responds to throttle pressure applied by the driver without stumbling or hesitation.
2. Poor fuel economy.
3. Engine stalling often.

How do I know if my throttle position sensor is bad?

Symptoms of a Bad or Failing Throttle Position Sensor

1. Car won’t accelerate, lacks power when accelerating, or accelerates itself.
2. Engine won’t idle smoothly, idles too slowly, or stalls.
3. Car accelerates, but won’t exceed a relatively low speed, or shift up.

What causes code P2138?

Diagnostic trouble code (DTC) P2138 stands for “Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation.” It is triggered when the vehicle’s engine control module (ECM) or powertrain control module (PCM) detects that the signals from the two throttle position sensors (or two accelerator pedal position sensors) do …

What year Chevy Impala should I avoid?

What’s the worst model year for the Chevy Impala? The Chevy Impala you should never buy is the one that was produced in 2005. Even though it had fewer complaints overall, the issues found in these cars were more costly. This car’s transmission was particularly bad.

What causes an electronic throttle control to go bad?

In this case, the problem may be caused by a miscommunication link from the throttle controller and the engine’s air fuel mixture which is regulated by the mass air flow sensor on many cars. In most cases, issues with the throttle controller are electric, either caused by a damaged sensor or electrical relay.

Can you drive with a bad throttle position sensor?

Can you drive with a bad throttle position sensor? It is not a good idea to drive with a bad throttle position sensor. Driving your car in this condition can be dangerous because your car might not accelerate properly or could suddenly accelerate without the driver pressing the gas pedal.

How to fix code p1516 Chevrolet engine light?

How do I fix code P1516 CHEVROLET? Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. How much do you know about cars? What does this mean?

How much does it cost to repair a p1516 Chevy?

The cost to diagnose the P1516 CHEVROLET code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

What does the ECM do on a p1516 Chevy?

P1516 Chevrolet Description. The Engine Control Module ( ECM) is the control center for the Throttle Actuator Control (TAC) system. The ECM determines the drivers intent and then calculates the appropriate throttle response. The ECM achieves throttle positioning by providing a pulse width modulated voltage to the TAC motor.