93 Cavalier Bad Vibration -- Motor Mounts?

[tfvesquire]

Hello All:

I am a member, but have been posting in the Nissan, Buick and Toyota sections. The above car is my sisters and I am trying to narrow down what needs to be replaced. To recap, she replaced three motor mounts (front mount, rear trans mount and driver side mount) with aftermarket mounts several years ago. They never fit just right and would allow the engine/trans to shift slightly when putting the car into drive and reverse. It never vibrated too bad when the car was in gear and the brake was on until recently.

BTW, the infamous head gasket was replaced last fall and the transmission had a new solenoid installed as well (trans basically stopped shifting). Other than that, no major service performed. Now, after I drove the car, I am wondering if all of the engine mounts should be replaced with OEM mounts to tighten up the slack and hopefully minimize the vibration that almost gives you a headache!!

My question is, I looked in the parts book and even checked with the local parts store and they could only find the three she replaced before. I figured there has to be a passenger side mount or bigger rear mount to handle the 4cyl torque, but didn't see anything while I was underneath the car. Does anyone know if there is another mount I am missing that goes on the passenger side? The reason I ask, is that I located some OEM mounts and the seller has a "OEM LH Mount for 1991-1994 Cavalier 2.2" and by LH, I believe he is referring to standing in front of the car and the mount would be on the passenger side. GM part No. is 22174976. I will also check with the dealer.

I would like to get a straight answer before I go buying a set of mounts. Is there anything else I need to check out? Alternator maybe?

I would appreciate any info and thank you for your time.

Ted, Chicago