Tom,my 2006 Silverado does the same thing,it's very common.ive researched this an no one I can find has a fix. I worked as a service advisor at a gm dealer,when I asked our drivability tech,he laughed and said good luck.He told me
they replaced every single piece related to the heated seats on a lot truck and they still had a mind of there own
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1967 SS427 4 speed triple black survivor-sold to a good home
1969 nova SS396 L78 4 speed triple black survivor
1970 camaro SS350 citrus green,Dad bought it new!
1968 chevelle ss396 L34 M21 KK rear all born with
1972 formula 400 M22
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