What does code 1449 mean

Check engine light means Read the code with an OBD reader or take to a garage to find out why the light came on!

The engine malfunction or check engine light could mean a whole number of different things, you need an obd diagnostic tool to read the trouble codes...

was the light on before you took the vehicle in for repairs, or did it come on after repairs, if someone has worked on the engine, all I can suggest is check that they haven't left any electrical connections off any components, that will cause the light to appear...

if codes are pending they might no trip check engine light , see what codes mean that are there

You need to scan the computer for trouble codes. If the light was on, there must be codes set. On a '95 Buick, it would be OBD-1, On Board Diagnostics-first generation ('96 and later is all OBD-2).
The diagnostic connectors are different for OBD1 and OBD2, but in '94 and '95, GM was on some models using a "hybrid" diagnostic link connector. You will just have to find the right diagnostic connector to get your codes. The guys at autozone or a national parts store who do engine scans for free may help you figure it out. If it is a straight forward OBD 1 connector, a cheap code reader could scan for trouble codes. For the OBD1, you can also use a jumper wire between terminals
A & B of the diagnostic link connector. Turn key to on, and two digit codes will begin to flash on the check engine light. Code 12, for instance, would be a flash, pause, two short flashes, and longer pause before the next code appears. Code 12 by the way, just means that the computer is in diagnostic mode-after that any set codes will appear or be flashed. Code 55 may also be flashed-this code means the end of codes that are set.

a check engine light will only come on when there is a stored engine or trans code meaning somthing is no working right.there is no set milage.

this code does not appear in the official chrysler codes or the universal OBD codes so contact the code reader manufacturers

It could be serious, or it could be very minor. The check-engine light simply means that something has happened and has set a code or codes indicating a failure or problem with something in the engine. Go to AutoZone and ask them to scan the computer (it's free, and a shop will charge an hour's labor to do this). Get the code(s) they give you and post them here as a reply/comment, and we can help you solve the issue.

misfire code (engine miss) check tune up plugs and wires

FYI also when you get those codes you can look them up and get their description at http://www.check-engine-light.com