I've check the doorman website. I see they have a couple of different rollers which none of them specify our cars. I guess they really should be the same. GM doesn't carry these items anymore? Do these install with a nut on the backside? Thanks for any info.
It is a stop as mentioned. Go to a u-pull yard and get one from a G-body. Either buy the whole window for about $20-$25, or break the one at the yard and take the stop.