Speedometer

10

Asked by Mar 20, 2016 at 07:30 AM about the 1998 GMC Sierra 1500 C1500 SLE Extended Cab SB

Question type: Maintenance & Repair

Speedometer shows that I am going 20 mph faster
than I am really going.

4 Answers

98,545

That is a large error, what has been done to the rig, like tires, or transmission replacement etc.

1 of 1 people found this helpful.
10

It has to be something else because I have owned this truck for ten years and this just. Started 2 years ago. I have the size tires on it that it came from factory with and have not changed transmission.

1 of 1 people found this helpful.
98,545

Ok so either there is a vibrational pulse from the speed sensor that the speedometer is picking up on or the stepper motor is going bad on the speedometer. A live data scanner would be able to read the speed sensor so then you would know if it was the sensor or the stepper. But if you just want to take a chance replace the speed sensor and see if that brings back to normal.

10

OK thank you very much.

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 67,767 nationwide Sierra 1500 listings starting at $1,350.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,300
  • #2
    John Saffrahn
    Reputation
    3,670
  • #3
    Glenn Clingenpeel
    Reputation
    3,350
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,132 Great Deals out of 181,503 listings starting at $1,898
Used Ford F-150
2,117 Great Deals out of 181,537 listings starting at $1,000
Used Dodge Ram 1500
401 Great Deals out of 10,657 listings starting at $1,500
Used Toyota Tacoma
562 Great Deals out of 41,710 listings starting at $2,999
Used GMC Yukon
425 Great Deals out of 20,897 listings starting at $2,000
Used Chevrolet Tahoe
635 Great Deals out of 36,921 listings starting at $1,800
Used Ford F-250 Super Duty
339 Great Deals out of 43,336 listings starting at $1,250
Used Chevrolet Camaro
414 Great Deals out of 31,676 listings starting at $2,395

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
77 Great Deals out of 38,774 listings starting at $23,314
2016 GMC Sierra 1500 For Sale
94 Great Deals out of 3,503 listings starting at $17,000
2015 GMC Sierra 1500 For Sale
126 Great Deals out of 4,546 listings starting at $15,922
2014 GMC Sierra 1500 For Sale
123 Great Deals out of 4,657 listings starting at $12,987
2013 GMC Sierra 1500 For Sale
46 Great Deals out of 1,984 listings starting at $8,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.