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 were thinking the speed sensor?
Thursday, May 4th, 2017 AT 7:56 AM

29 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then check to see if cluster is getting signal it may be a wiring issue or the dash needs to be rebuilt. If it is not getting a signal replace the speeds ensor here is the location of the sensor and a video of the job being done for the cluster replacement with a rebuilt unit.

https://youtu.be/_HEC44xENxw

Check out the diagrams (Below). Please let us know what happens.
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Thursday, May 4th, 2017 AT 12:26 PM
Tiny
RPRASCHER
  • MEMBER
  • 2 POSTS
I have had a mechanic check all the wiring and sensors we swapped out the cluster tht fixed it, thank you so much for the video.
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Thursday, July 13th, 2017 AT 2:54 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Nice work, we are here to help, please use 2CarPros anytime.
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Thursday, July 13th, 2017 AT 3:03 PM
Tiny
AZRAGE52
  • MEMBER
  • 2 POSTS
  • 2005 CHEVROLET AVALANCHE
Electrical problem
2005 Chevy Avalanche V8 Two Wheel Drive Automatic 75k miles

i change my battery in my truck, as a result of this my truck, speedometer went out, only work every now and then. Also my truck sometimes doesnt start. I check the battery cables and they are both tightly installed. Do you have any idea?
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,101 POSTS
HAve you tried to reset the computer by disconnecting the battery for about 5 minutes then reconnecting it to see if that resets it?
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
AZRAGE52
  • MEMBER
  • 2 POSTS
Yes I have tried that, with no luck
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
MDYKE
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET AVALANCHE
  • V8
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
Mt speedometer shows from 80 to 120 while sitting still. This after using the cruise control. What could cause this?
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,101 POSTS
Have the vehicle speed sensor (VSS) checked. If it is good, then there is a good chance the cluster itself may be bad.

Let me know what you find.
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
GOODER
  • MEMBER
  • 1 POST
  • 2003 CHEVROLET AVALANCHE
  • V8
  • 4WD
  • AUTOMATIC
  • 96,000 MILES
My speedometer is pegged at 120mph and won't move. I have already replaced the speed sensor but that was not the problem. Is there a part to be replaced? I can't seem to find anything on the internet.
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Most likely you will have to replace the IP cluster. You can go to your dealer and have a sweep test performed on it to see if it will start working. But I think you need a cluster
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
I would suggest buying one form a dealer, they have a warranty and will stand behind it if something goes wrong. I have had nothing but problems with parts purchased off the internet
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Tuesday, July 14th, 2020 AT 4:50 PM (Merged)
Tiny
CHEVYP2P
  • MEMBER
  • 3 POSTS
  • 2005 CHEVROLET AVALANCHE
  • V8
  • 4WD
  • AUTOMATIC
  • 89,446 MILES
My speedometer is not working right the speedometer gauge is giving me a wrong reading. Does any one knows how to fix if
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
87BANSHEE
  • MEMBER
  • 15 POSTS
You need to replace the instrument panel cluster. This is a common problem with these trucks. You will have to get it programmed at a dealership.
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
DIP
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET AVALANCHE
Electrical problem
2004 Chevy Avalanche V8 Two Wheel Drive Automatic

SPEEDOMETER NOT WORKING
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Is it stuck in a certain position. You may have a bad cluster causing it? The stepper motors are known to go bad in them
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
JAIME818
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET AVALANCHE
  • V8
  • 2WD
  • AUTOMATIC
  • 101,000 MILES
My speedometer is not working. I changed the speed sensor. Still does not work!
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
KYTERRYLEE
  • MEMBER
  • 8 POSTS
You need to call a dealership and make sure there are no recalls or TSB's. If there is not, you can find used instrument clusters for not much $ and you shouldn't pay more than an hours labor to have it replaced. Hope this helps!
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
ANTHONY HALL
  • MEMBER
  • 1 POST
  • 2003 CHEVROLET AVALANCHE
  • V8
  • 4WD
  • AUTOMATIC
  • 81,000 MILES
All my gauges are not working. The speed odometer, tach, fuel, temp etc won't register. Has a fuse that controls all these gauges blown or is this more serious? Thank you
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
SAILOR.JERRY
  • MEMBER
  • 1 POST
9 times out of 10 it is the cluster that has gone bad here is a video that can help you see how to fix the problem.

https://youtu.be/_HEC44xENxw

Please let us know what happens.
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)
Tiny
KYTERRYLEE
  • MEMBER
  • 8 POSTS
Check with your Chevrolet dealer on the cluster as well, it fixed my car. This site rocks
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Tuesday, July 14th, 2020 AT 4:52 PM (Merged)

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