Q: cost to replace an rr tire sensor on 2007 Chevrolet Impala

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What is the cost to replace a rr tire sensor on a 2007 chev Impala
Has GMC had problems with 2007 Chev Impala tire sensors?
(2) Answers
Not sure of the cost but I have a 2007 Impala SS I bought used in 2008 with 9111 miles on it and have had problems with the tire pressure monitorin system since. I take it into the dealer they say they fix it but to this day it isn't fixed. They say this system is mandated by the federal government and cant be disconnected. I say if it is mandated that it be there and functional then Chevrolet should be held liable for this issue and moreso if it leads to death due to malfuntion.