My hud is not reading the same speed as the speedometer..?? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-09-2005, 02:06 PM   #1
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Default My hud is not reading the same speed as the speedometer..??

My hud is about 2 to 3 mph off what the speedometer says. Is this normal? I've checked tire size and all the tires are the correct size. Is there any way to make the speedometer and hud match? Also which one is correct the hud or the speedometer? BTW, yes its on mph not kph

Thanks for the great forum! Also, I would like to find some bonneville people in northwest ohio or northeast indiana to hang out with sometime. A good reason to talk about cars and drink some BEER!
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Old 12-09-2005, 02:25 PM   #2
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normal, hud is the more correct of the two.
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Old 12-09-2005, 03:14 PM   #3
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ya my grand prix has been that way since i bought it. but its only like 1 maybe 2 mph diff.
but a freind of mine told me to go with the hud over the dash.
btw hud says 75, dash says 73/4. but they both are the same till 25 then agian after like 85 or something.
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Old 12-09-2005, 03:43 PM   #4
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The gauge is mechanical and subject to inaccuracy where the hud is not.

Mine is further off depending on how it feels that day.
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Old 12-09-2005, 05:56 PM   #5
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Default Re: My hud is not reading the same speed as the speedometer.

Quote:
Originally Posted by suctoes
Thanks for the great forum! Also, I would like to find some bonneville people in northwest ohio or northeast indiana to hang out with sometime. A good reason to talk about cars and drink some BEER!
http://www.bonnevilleclub.com/forum/...=486258#486258
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Old 12-10-2005, 05:05 PM   #6
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Mine is like that too 2-3mph off just check with the hud once and awile wile driving
i don't like the hud on all the time.
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Old 12-11-2005, 08:32 PM   #7
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miine is really far off, when i'm going low speeds, its not that noticable, but when i'm going 80 on the speedo, it says 87 on the head'* up display
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Old 12-11-2005, 09:10 PM   #8
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i would have to say that mine is about the same at lower speeds, but it says 64 on the hud and 61 on the speedometer
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Old 12-11-2005, 09:15 PM   #9
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Quote:
Originally Posted by 96bonniessei
i would have to say that mine is about the same at lower speeds, but it says 64 on the hud and 61 on the speedometer
my speedo is off 4 mph in the higher speeds
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Old 12-12-2005, 10:07 AM   #10
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My poor speedo suffers occasional whiplash and is off about 5 mph at highway speeds. I'm considering cleaning it next time my cluster is out.
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