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  1. chidychi

    5.7L bogging down under load and low rpm

    Hi everyone. 5.7L with 66RFE I have a 2017 2500 slt with about 200k km (125k miles). I've searched the forums but haven't quite found my situation. About a year ago, the truck started to struggle climbing hills ( my driveway is a 300' hill with turns covered in ice and snow) . I parked it...
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