Hey everyone , I have a 2006 Trailblazer LS 4.2 , it was shifting really rough , i properly changed the MAF and air filter, still bad, any help ??
Throttle position sensor CAN cause shifting problems. Is it running rough too?
actually runs really well, just gets to about 3500-4000 rpms and I usually have to get off the gas to get it to shift
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