transmission wont change until 2000rpm when first start and switch to reverse it whines
Check the fluid level
fluid level is full had it changed last sept by BIG O that when problem started
OK then next is get your OBD codes scanned. A large parts house will do it free and if it does not pinpoint the fault at least eliminate a lot of guesswork... may find a faulty solenoid. Did they do a drain and fill or a flush? A 'so called 'flush' will pick up small debris that stays on the bottom of the transmission pan and filter screen, where it does no harm...and circulate that crap through your transmission
Looking for a Used Ram 1500 in your area?
CarGurus has 13,899 nationwide Ram 1500 listings starting at $995.
Search Dodge Ram 1500 Questions
Dodge Ram 1500 Experts