Q: Speed control broken. 2005 Buick Terraza

asked by on

My speed control doesn’t work. So I had a certified General Motors dealer look at it. The steering switch was OK. The Engine Control Module was OK. And I even tried a new Engine Control Module, but it didn’t do any good. Do you have any suggestions or ideas as to how to fix this?

You may be having a problem with the throttle control actuator assembly not getting a signal from the ECM, or the actuator module is defective. The cruise control test with the dealer scanner can monitor all the inputs and outputs of the cruise control and should have been diagnosed by the dealer when you had them test it. If the ECM did not fix it, then the throttle control assembly may be the problem. Have the dealer test it again since you paid for the diagnosis. If you’d rather have it checked elsewhere, a certified professional from YourMechanic can come to your car’s location to inspect the speed control.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Speed control broken. 2005 Buick Terraza

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How long should vehicle first warm up in cold temperatures

The engine may be getting hotter from the CVT transmission overheating which causes the engine coolant to get hotter than it should. The manufacture has a technical service bulletin to add a transmission external cooler and clean out the cooler...

Q: It says service engine soon usually in the morning while warming up and goes out but does not come back on.

The check engine light should come on when you turn the key to the "on" position, but without starting or running the car. That function allows you to do a bulb check but also indicates that the PCM (computer) is...

Q: ETC ISSUES Chrysler 2005 limited

There several potential causes for this. First, there could be a vacuum leak somewhere. In addition, a relearn procedure must be performed after replace the ETC actuator. It's possible that the dealer missed this step. Finally, there could be a...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...