My 2005 Altima shifts hard from 1st to 2nd like it has a shift kit, fluid is clean and level is good. This usually happens when the car is cold and most times gets better when transmission heats up. Is there any easy answer?

05 Chrysler pacifica is a 4 speed automatic, next time buy a car with a 5 speed automatic

check clutch hydrolics to make sure fluid is not low. Try double clutching. When in neutral, push clutch in, then out and in again and try shifting into low.

Check the Coolant (antifreeze) level. My 94 continental has a hard time shifting from 2nd to 3rd when the level is low. Also, this may indicate that the transmission fluid is too old to work properly. The transmission fluid is cooled at the bottom of the radiator, since cool fluid works better than hot fluid (especially when the trans fluid is old) that could make the transmission not shift properly. Keep the coolant level up until you can have the trans fluid checked.

Low fluid level, clogged transmission filter, crimpped line to oil cooler. If over 60k miles and transmission never serviced then a good place to start.

I would start by replacing the transmission fluid, that will likely resolve the issue.

possibly normal wear,band adjustment, check fluid level & condition(contamination); check for vacuum hose leaks and condition opf vacuum hoses..

as a quick remedy 1st check your fluid make sure is clean and leveled/adjust your kick down cable for early shifting by loosening the cable till you establish the right shifting

check the fluid level in the transmission, also change the transmission fluid and filter

Have you tried taking the car in for maintenance? Usually on most (older) auto transmissions there is a hose coming off of the exhaust manifold or carburetor area that provides the pressure for the transmission fluid. If that hose doesn't have a good seal, your shifting may be difficult and the transmission may not stay in the gear you want it to.

I have the same problem also. Hope someone has the answer.