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Yes, pressure changes with temp. (PV=NRT). I don't trust the TPMS sensors for accurate pressure but for pressure and temperature trends. I use a round, bourdon tube type gauge for accurate pressure readings on truck and trailer and adjust about 4 times per year, but do check before each trip.
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Greg and Linda
2021 Passport SL 221ML
2015 Sierra 1500, 5.3 L - SOLD
2022 Sierra 2500 HD, 6.6L Gasser
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