Speedometer problem

Tiny
RPRASCHER
  • MEMBER
  • 2010 CHEVROLET AVALANCHE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 92,000 MILES
My speedometer drops ten to fifteen mph while driving at highway speed then returns. This also will shut off my cruise control if it is on. The cruise also will shut off without the speedometer dropping. I have had this to a mechanic and drove it with a reader connected. It showed an upward spike in the speed graph. We replaced the speed sensor. Problem did not change.
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Thursday, May 4th, 2017 AT 7:56 AM

6 Replies

Tiny
HMAC300
  • EXPERT
Then check to see if cluster is getting signal it may be a wiring issue or the dash needs to be rebuilt.
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Thursday, May 4th, 2017 AT 12:26 PM
Tiny
RPRASCHER
  • MEMBER
I have had a mechanic check all the wiring and we swapped out the cluster with one he had on hand with no change do you have any other suggestions?
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Thursday, July 13th, 2017 AT 2:54 PM
Tiny
HMAC300
  • EXPERT
Scan for codes see foots a sensor orwiring issues check ground as well
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Thursday, July 13th, 2017 AT 3:03 PM
Tiny
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  • MEMBER
Scans show no codes.
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Thursday, July 13th, 2017 AT 4:49 PM
Tiny
HMAC300
  • EXPERT
Ok well I am away until Sunday night so repost for a quicker answer
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Thursday, July 13th, 2017 AT 6:02 PM
Tiny
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  • MEMBER
Ok thank you
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Thursday, July 13th, 2017 AT 6:19 PM

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