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  • Vehicle Question

    If you change tires and the new tires carry a different amount of air - can pressure sensors be reprogramed for a different amount ?

  • #2
    Originally posted by jhjimbo View Post
    If you change tires and the new tires carry a different amount of air - can pressure sensors be reprogramed for a different amount ?
    The "pressure sensors" are in the stem. Currently, they can only be installed by a dealership and they are about sixty bucks a pop.
    My m-i-l had a "low tire pressure" light come on.
    We did everything. No help.
    Finally took it to the dealership.
    Pulled the tire, broke it down, swapped out the stem, remounted the tire and put it back on the truck.
    It was like $60 for the stem and $60 labor ... just to get rid of the damn warning light!

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    • #3
      They should be able to nowadays

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      • #4
        Originally posted by PigHunter
        What's your vehicle?
        chev Silverado

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        • #5
          Not all vehicles use pressure sensors, our Civic recently started popping several warning lights including the pressure indicator. Turns out the computer uses signals from the wheel speed sensor for that in addition to traction control and other functions. Had two weeks left on the warranty so was no charge to replace. My guess is as long as the tires are equally inflated and remain at the same temps the actual psi wouldn’t matter.

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          • #6
            Don't have those highly technical, involved issues. Most high tech thing on my Super Duty is power windows.

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            • #7
              Originally posted by crm3006 View Post
              Don't have those highly technical, involved issues. Most high tech thing on my Super Duty is power windows.
              Same on my '01 Dodge Ram.

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              • #8
                You missed my question. Of course I know my vehicle has sensors.
                Now suppose you have tires that require 45psi and you install tires that require only 36psi. Your sensors would be going off constantly.

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                • #9
                  Tire pressure requirements and tire size are set by the car's maker.

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                  • #10
                    Originally posted by franchi20 View Post
                    Tire pressure requirements and tire size are set by the car's maker.
                    changing size from that

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                    • #11
                      If the car is new enough to have TPMS, I'd expect it to have an ECM that would be adversely affected by the change in tire size and cause engine problems.

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                      • #12
                        Originally posted by franchi20 View Post
                        If the car is new enough to have TPMS, I'd expect it to have an ECM that would be adversely affected by the change in tire size and cause engine problems.
                        no problem there

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                        • #13
                          Originally posted by jhjimbo View Post

                          chev Silverado
                          Call GMC customer service. They can answer your question.

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