Wondering if any has had power headrest problems? All other seat functions work fine. Just can't get the drivers side headrest to raise or lower.

 

Most likely a bad solder joint on the circuit board on which the headrest motor sits.

This is from my '99:
-Remove two screws on lower seat back, remove back panel from seat.
-Check the headrest assembly with a bright light so you can see what pieces need to be moved aside then release the plastic bracket (it is tight but do-able without breaking anything).
-Tilt seat back so you can remove the headrest.
-Remove headrest.
-Remove motor and circuit board assembly. You'll have to figure out how to pop off the plastic cover but again, it is possible. Bright light and small screwdrivers.
-Slip out the motor and worm gear assembly. Check for cold solder joints (dull ***** of solder, not shiny and sleek). Touch up with a solder iron and some fresh solder.
-Reassembly is the reverse of assembly.

 

this is what i need to do with newly purchased used gl550. 2nd day into having the car, i encountered this problem and pulling my hair out since then. so frustrating and so disappointing.
i'll PM you to find out how to do this....

 

The arrow points to the bad solder joint.