My transmission shifts hard into gear when the car is first turned on after sitting all night on a cold night
My 2004 chev impala slips every once in awhile,I changed the fluid and filter and it still shifts kinda hard what else can it be
You must change the engine oil that's the main reason.
I changed the transmission oil and filter about 5 months ago and the transmission shifts smoothly and once in a while after a 200 mile trip sometime it shifts real hard and than after a while it will shift smooth. Whats up