Skip the auto shop - Our mechanics make house calls

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?

A: You may be having a problem with the thrott...

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: Starting issues when engine warms up

Hello there, thank you for asking about your 1990 Oldsmobile Cutlass Calais. Your symptoms are very similar to a vehicle experiencing a problem with the intake air temperature sensor. Other reasons for such a hard start can be low fuel...

Q: How to replace crank sensor on 95 lesabre

In order to replace the crankshaft sensor on the 3.8 L Buick LeSabre you will need to remove the crankshaft damper using a puller and the sensor is mounted behind the damper. Once the sensor is replaced the damper must...

Q: Why does my vehicle feel like it's being forced to move?

Hi there. If the engine continues to overheat after fixing a core plug leaking, then the thermostat may not be opening all the way and needs replaced. As far as the vehicle not wanting to move and seems like the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.