Yes. Door Check is the correct name. I don't know if you have the same ones as my 98 C230. The ones on my car are metal. A couple of years later they switched to plastic. I tried greasing mine with lithium etc and nothing had any effect. I finally took them out and disassembled them and put some thick grease in them. It helped a little but some groaning came back. Basically it was a bad design. You can get new ones for fairly cheap ($30?) at the dealer but they are not painted if you care. Yours might be different than mine though. I remember a thread on this a couple of years ago.

Mike

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra