My gear shift in my 1998 Chevy Malibu was sticking. I pulled out the pin and was able to work it. Then I pulled out the orange plastic piece and now I can't get it back in properly.

SOURCE: Gear shift won't shift.

make sure the brake lights are working the shift interlock works off the brake light switch.

SOURCE: shift gear is locked cannot shift out of park gear

I had the same problem but my cousing, who is a mechanic, opened the whole thing up and removed the safety catch. Now, this is not the best of ideas because the car will shift now without your foot being on the brake but I have had it this way for a while and no troubles shifting in or out anymore.

SOURCE: how to replace valve cover gasket 1998 chevy malibu

The first step is to remove all the parts that are in the way of you being able to remove the valve covers. (Ex.: air intake, loose wires etc.) Then you will need to remove your valve covers (using basic tools) and be very careful to not let anything get on your lifters, which your valve covers protect. Once you have the valve covers off compare the new gaskets to make sure they are the right size. Then remove the old gasket and replace with the new one using a high temp gasket sealant (available at any auto parts store) to attach the gasket to the valve covers. Then tighten down snug and check for leaks after replaced. 

SOURCE: 1998 chevy lumina, shifter on steering column,won't shift

Either the pin that connects rod to tranny is broken off, or there is internal transmission problems.

SOURCE: 2004 Lincoln Navigator: gear shifter knob not working

well you go to the dealer and buy a new shifter tie and install it once then never pull the know off again