Speedometer does not work right?

Tiny
JABAK35
  • MEMBER
  • 2005 BUICK RENDEZVOUS
  • 115,000 MILES
Sometimes speedometer will read way past 120 mph when going 55 or so sometimes not. Sometimes when stopped it might read 60 or so sometimes not. What could cause this?
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Sunday, September 25th, 2011 AT 1:54 AM

23 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Hello,

This happens when the vehicle speed sensor needs to be replaced here is the location so you can get the problem fixed. Check out the diagrams (Below). Please let us know what happens. Cheers
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Sunday, September 25th, 2011 AT 3:19 AM
Tiny
DAISYMOONZ
  • MEMBER
  • 2 POSTS
  • 2005 BUICK RENDEZVOUS
2005 Buick Rendezvous Automatic 60000 miles

The speedometer has stopped working. Well, not exactly true, it just doesn't work accurately. Recently when driving the speedometer shot up to 115 (not that we going that fast, the vehicle never changed speeds). It got stuck there and didn't move. Just as suddenly as that happened, it was back to normal. Then it was stuck at about 68. Even when the engine was turned off. When we were moving, it didn't move. It is now pointing at the bottom of the speedometer. It is attempting to go all the way around. Even when we are stopped, it doesn't move. Any suggestions on fixing this ourselves!
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
I would start by having the vehicle speed sensor checked. If no luck, it sounds like a problem with the cluster itself.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
JAKE123456
  • MEMBER
  • 1 POST
  • 2004 BUICK RENDEZVOUS
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 116,000 MILES
2004 Buick Rendezvous wouldn't start; lights seemed bright, fan was on. (Very cold weather) Had it towed to a dealer where they told me that it was the battery and said test was at 9 volts (I have had no previous issues with turning over; it was like no power getting to the starter) Asked to keep the battery and brought it home; battery tested 12.62 volts. Vehicle now starts. However now the speedometer does not work anymore. Technician admitted to trying to boost it to see if it would start so they could move it into their shop. Technician said they will have to replace the speedometer head; sometimes with boosting it causes surges and does strange things to electronics. Does this sound plausable? And should not the garage be responsible for fixing this themselves if it was due to them boosting it? Does any of this seem right? Or could there had been another explaination? Such as unhooking the battery had reset something? Would appreciate any comments you have.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
If they admitted that they could have caused the problem, yes they should be responsible. Tell them it workled before they worked on it.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
SECKA
  • MEMBER
  • 1 POST
  • 2002 BUICK RENDEZVOUS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 102,000 MILES
Hi
My speedometer stop working so I 'd like to know where is the speed sensor
Thanks
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You could have two, one at the dash and the other at the transmission.

Your vehicle speed sensor is located on the transaxle
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
NEEDTONO567
  • MEMBER
  • 1 POST
  • 2003 BUICK RENDEZVOUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 64,414 MILES
What is the possible cause for the speedometer to stop working after it reaches 65 mph and doesn't reset itself?
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Has the check engine light come on? Chances are the vehicle speed sensor (VSS) is bad. Have that checked, but before doing that, let me know if the check engine light has come on.

Joe
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
EDWIN LUGO
  • MEMBER
  • 9 POSTS
  • 2005 BUICK RENDEZVOUS
  • 3.4L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 14,264,400 MILES
The check engine light came on The codes stating that the speedometer sensor was bad. I need information on how to replace it on the dashboard.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
STEVE W.
  • MECHANIC
  • 12,883 POSTS
If it is the speed sensor, it is not in the dash it is in the transmission. What is the actual code? It is possible it is not the sensor, but a bad wire, bad connection, or it could be a different sensor.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
EDWIN LUGO
  • MEMBER
  • 9 POSTS
Okay Mr. Steve, I will check into your answer and check the wiring harness and the connections and get back to you, because my friend has the vehicle. Thanks again and have a good evening. Your friend, Eddie Ed.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Have you checked to see what code it is?
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
EDWIN LUGO
  • MEMBER
  • 9 POSTS
I will get back to you some time tomorrow okay. I will let you know then because he is using the vehicle tonight at work. But, thanks again for responding.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
BUICK2005
  • MEMBER
  • 1 POST
  • 2005 BUICK RENDEZVOUS
  • 3.5L
  • V6
  • 4WD
  • AUTOMATIC
  • 120,600 MILES
Speedometer registers a higher speed than I am actually going. It also flutuates
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
CAR-MAN145
  • MECHANIC
  • 321 POSTS
This may sound to easy but some of these car have a button that switches from MPH to KPH and if you switched it the speedo will be showing KPH witch is faster then MPH.
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check what first guy said but then have it scanned for codes see if your vss is off auto parts does for free
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
JESSEBO
  • MEMBER
  • 1 POST
  • 2005 BUICK RENDEZVOUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 50,000 MILES
I need directions on how to rehook speedometer cable
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
2005 rendezvous does not use a speedometer cable. It uses the vehicle speed sensor to operate the speedometer/odometer
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)
Tiny
LAWRENCE P EGAN
  • MEMBER
  • 1 POST
  • 2005 BUICK RENDEZVOUS
  • 87,000 MILES
Vehicle started to show incorrect speed. While stopped it showed I was traveling 20 mph. Now the speedometer has little movement and points straight down. The needle moves a little when started or turned on and off. Does the cluster need to be replaced? Also the temp. Guage shows over heat range on a cold engine
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Monday, October 22nd, 2018 AT 9:11 PM (Merged)

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