Skip the auto shop - Our mechanics make house calls

Q: Abs service light on, and speedo is bouncing, not shifting gears properly

asked by on

Truck as a bad time shifting after the abs service light appeared and speedo started bouncing

My car has 147534 miles.
My car has an automatic transmission.

A: One of the most common components that the ...

One of the most common components that the ABS and transmission both rely on for smooth operation is the speed sensor. The transmission speed sensor is a magnetic sensor that provides this information, allowing the transmission to shift smoothly. The sensor counts the internal number of revolutions of the transmission and transmits that information to the transmission control unit, where the data is used to determine the rotational speed. Having the transmission speed sensor replaced by one of our local mechanics would be the best option as long as this is the source of your issues.

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: rattling and clinking noice

Hello. It really depends on where the noise sounds like it is coming from for me to helpfully assist with this. If it is coming from under the vehicle then it may be a loose exhaust heat shield. If it...

Q: My car is giving me an error code - P2119

This code points to a problem in the throttle control actuator circuit. The ECU watches signals to and from the throttle body controls and reads the resistance in these circuits to make sure it tracks discrepancies in the signals; it...

Q: Truck independently accelerates and speedometer sticks on zero

Hello. This sounds like the throttle position sensor is failing. This is a known problem with your vintage Silverado. Contact your Chevy dealer and/or GM Customer Service for repair advice.

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...