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My 2001 impala has problems switching through gears while driving, only when speedometer bounces. Replaced speedo sensor, but still bunces.

When my speedometer bounces my car will jerk when it automatically switches through gears, sometimes it wont go past second gear. If the car sitis for a couple days it will drive perfect until it gets warm then the speedometer starts bouncing, and the car drives odd. not quite sure what the issue is, and I'm wondering if it could be a ground wire?

1 Answer

Jeff Armer

Cars & Trucks Master 15,575 Answers
Posted on Jun 30, 2017

Jeff Armer

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Joined: Nov 22, 2012

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You replaced the wrong part ! Should have had the vehicle checked for DTC'S - diagnostic trouble codes . Replaced what speedo sensor ? No , it's not a ground wire !
Your probably have a bad wheel speed sensor ! Have it checked for DTC'S
Speedometer
The IPC displays the vehicle speed as determined by the IPC. The IPC calculates the mileage based on the class 2 vehicle speed message from the PCM. The IPC calculates vehicle speed based on the class 2 wheel speed message from the EBCM if a loss of communication or malfunction occurs with the PCM. The speedometer defaults to 0 km/h (0 mph) if the IPC detects a loss of class 2 communications with both the PCM and the EBCM.

EBCM - electronic brake control module - ABS

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My engine light is on, my speedometer sometimes works and sometimes doesn't register, some times it bounces back and forth.

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My engine light is on, my speedometer sometimes works and sometimes doesn't register, some times it bounces back and forth.

2004 Kia Sedona

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My 2001 impala has problems switching through gears while driving, only when speedometer bounces. Replaced speedo sensor, but still bunces.

1 Answer

Jeff Armer

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Related Questions:

My engine light is on, my speedometer sometimes works and sometimes doesn't register, some times it bounces back and forth.

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My engine light is on, my speedometer sometimes works and sometimes doesn't register, some times it bounces back and forth.

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Trustworthy Expert Solutions

My 2001 impala has problems switching through gears while driving, only when speedometer bounces. Replaced speedo sensor, but still bunces.

1 Answer

Jeff Armer

Add Your Answer

Attachments: Added items

Related Questions:

My engine light is on, my speedometer sometimes works and sometimes doesn't register, some times it bounces back and forth.

Replaced input and output speed sensors for erratic speedometer. Now the speedometer remains at 0. Anyone have a suggestion on what else could be wrong?

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My engine light is on, my speedometer sometimes works and sometimes doesn't register, some times it bounces back and forth.

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