My speedometer is starting to mess up and my cruise control does not work

Tiny
ANNIELEHEW
  • MEMBER
  • 2005 CHEVROLET IMPALA
  • 3.8L
  • V6
  • TURBO
  • FWD
  • 162,000 MILES
My cruise control has not work for a year and when I was coasting down a hill my speedometer started to fall until I hit the gas pedal and it straighten back up. Would the speedometre sensor cause this and where would it be located. Would it be in the same place even for the super sport model.
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Tuesday, April 7th, 2015 AT 11:09 AM

11 Replies

Tiny
HMAC300
  • EXPERT
Scan for codes first and check fuses and relay under hood for cruise. See pic
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Tuesday, April 7th, 2015 AT 12:25 PM
Tiny
ANNIELEHEW
  • MEMBER
Thank you so much. But I can't run any codes cause my car is not trowing any up accept my airbag light. And they have not been deployed.
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Tuesday, April 7th, 2015 AT 12:29 PM
Tiny
HMAC300
  • EXPERT
Have scan it as auto parts can't scan for anything other than engine or trans codes.
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Tuesday, April 7th, 2015 AT 12:37 PM
Tiny
ANNIELEHEW
  • MEMBER
What?
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Tuesday, April 7th, 2015 AT 12:39 PM
Tiny
HMAC300
  • EXPERT
Have a pro scan for codes.
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Tuesday, April 7th, 2015 AT 12:45 PM
Tiny
ANNIELEHEW
  • MEMBER
They dealer said if I don't have any lights on even the diagnostic machine couldn't read nothing
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Tuesday, April 7th, 2015 AT 12:48 PM
Tiny
HMAC300
  • EXPERT
I got you mixed up with another vehicle sorry
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Tuesday, April 7th, 2015 AT 12:57 PM
Tiny
ANNIELEHEW
  • MEMBER
Do I need to buy new connector when I buy the new vehicle speedometer sensor?
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Wednesday, April 8th, 2015 AT 12:53 PM
Tiny
HMAC300
  • EXPERT
No you shouldn't unless the connector Is damaged. In that case I'm not sure who handles that other than a dealer. Have you check relay under hood as well as fuses for cruise they should be marked for location under fuse box top. Other than that I have no further suggestions without actually seeing this myself.
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Wednesday, April 8th, 2015 AT 1:05 PM
Tiny
ANNIELEHEW
  • MEMBER
I have replaced my vss and the speedometer is doing fine but now my check engine light is on and the code is P0717. What is wrong?
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Friday, April 10th, 2015 AT 3:41 PM
Tiny
HMAC300
  • EXPERT
It may be that the harness was stretched when you installed the vss as this is the input speed sensor for turbine. It is inside trans. Also if no vss signal makes it come on as well. So go to an auto parts and see if they will erase the code and then drive it and if it comes back on have amechanic look at it. That sensor could be bad or it's a connection problem. It is inside the trans and it may be apoor connection for large plug at trans as well.
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Friday, April 10th, 2015 AT 5:52 PM

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