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I’m dealing with a 2008 Chevy express. My tire sensors worked at one time but after changing out my battery they went blank. I’ve been researching how to re learn the Tpms. I apply the parking brake, turn the key to run (engine off), then I scroll on the (DIC) to “press V to relearn tire positions”. When I press V. It blinks then does nothing. It just won’t change over to “tire learning active”. Any input would be greatly appreciated!

just a side note. My horn has not worked since I bought the van used. I diagnosed it the best I could. I think it has something to do with the built in relay in the fuse box. ( this year doesn’t have a removable relay for the horn). I don’t know if the horn not responding would cause the TPMS to not work properly..
 
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