Speed sensor possibility

Tiny
ELIZABETH BURCHAM
  • MEMBER
  • 2009 CHEVROLET COBALT
  • 2.2L
  • AUTOMATIC
  • 96,000 MILES
So I noticed that my car shifts first in second but once I am at 40 mph it does not shift and it revs to 3 but still goes faster. I had an auto store hook up their machine and it is saying that the speed sensor is off. I have no idea. No one will help me if it is the transmission because these vehicles are very hard when dealing with transmission. What to do?
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Thursday, November 8th, 2018 AT 6:44 AM

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Tiny
ASEMASTER6371
  • EXPERT
Good morning.

Was there a code set that the parts store got on there scan?

The throttle position sensor controls the shifting command for the transmission and the TCM tells the shift solenoids to work as well.

When was the last time the oil/filter in the transmission was serviced?

Roy

https://www.2carpros.com/articles/automatic-transmission-problems

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission
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Thursday, November 8th, 2018 AT 7:19 AM

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