Question about 2002 Chevrolet TrailBlazer
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Posted on Jan 02, 2017
SOURCE: I recently purchase a 2005
Speedometers read the rotation of the drive train, usually in the transmission, and so changing tires will not change the transmission ability to read (count) the rotation.
But the transmission rotation will increase or decrease with different sized tires, since they go around faster or slower, depending on the size change.
A smaller tire will go around faster to go the same distance that a larger one goes. So in this case, the transmission will also be going around faster, and the speedometer will be giving a false reading.--------- Bigger tires will make the odometer to read 'long' and the speedometer to read fast. Smaller ones would make them read 'short' and slow.And this all also makes difference in fuel mileage and this makes fuel reading bit different.-------- ---------------- They do not do it automatically, but you can reprogram them with a scantool if you put bigger tires on it.You will get false reading,but to re-adjust the readings correctly,you will need to readjust the transmission settings by scan tool.Which can be done at dealer.As they will have exact specs to do this.But also this can be done at local auto parts and repair center, who has the re-programming scan tool.--------------- This should help.Thanks.Helpmech.
Posted on Feb 26, 2011
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