My 2001 cavalier has service light on and when i put it in reverse the lights blink off and on also the TC light came on on the panel and now the rpms are flickering up and down and is running rough

Does the problem occur when driving or only if revving the engine while in Park? If only while in Neutral or Park, that is due to the overrev limiter to prevent you from over revving the engine in a no-load situation. If this is a problem while driving, then we'll need to know what engine your Cavalier has and if there are any other symptoms (such as a rough idle, roughness at 3500 rpms and above). Also, when is the last time the spark plugs and spark plug wires were replaced? Is the Check Engine light or Service Engine Soon light illuminated?

PLEASE HELP! SOS! car starts but doesnt move! - Club3G Forum ...

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Nov 16, 2010 - 61 posts - ‎14 authors
now yes, i will take the transmission is fubar into consideration but theres an .....however... idk about my cv joint, my car ONLY would make a loud ping noise when i move from a stop or brake ..... almost always when i put it into reverse. such as an engine mount sound, ... Vehicle: 2004 Eclipse Spyder GT. Loud knocking sound after oil change..
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Loud thump when I shift into drive or reverse - CarGurus

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Mitsubishi Transmissions & Drivetrains Repair Questions ...

manual , replace the clutch master cylinder
probably the original fault and you replaced the clutch for nothing

If the abs light is on there is a code set in the abs system. When a code sets it disables tc and abs. You need to have it scanned for codes

Final drive speed sensor causing Trac light and rough shifting. Metal dust on the sensor. Have the transmission filter and fluid serviced. This should have been done at 60,000 miles. You may get an ABS light too. Service the sensor. Perform an OBDII scan for stored faults.

Traction Control

That light will come on when the computer senses a fault, irregardless of typical maintenance. Take your car to your local auto parts superstore and have them scan the car for the fault code(s). This will help you choose a course of action. Or take it to your mechanic.

If you have an autozone or advanced auto parts store near you, go to them and ask if they do courtesy check engine light or service repair light check . Most do free of charge. When they read the code you will know exactly what your problem is. If you go to mechanic to check your light they will charge you. Your service light is will tell you whats the problem.

sounds like there is a problem with the day time running lights my does the same thing but because i installed HID light so i no long have day time lights try changing headlight bulbs if not then its a short

could be or it could be the the relay for thr day time lights