Why would an owner ever want to replace this strut, which does not include the mount and bearing, which besides the cartridge, is what wears out:
FRONT SUSP RED ELECTRIC ADJ-STRUT
Note: spring code 6yp; sport suspension (fe3); chassis, realtime damping(f45); suspension (6yp); left hand; $537.40 USD.
The rear shocks are even more stupid:
REAR LEVELING SHOCK RED ELECTRIC ADJ-ABSORBER
Note: soft ride suspension (fe1); chassis, realtime damping(f45) $537.40 USD EACH!
I have a pic, but it is greater than 30kb so it won't load. Here is the link:
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http://catservices.wrencheadpro.com/SmartPages/partinfo/ACD/580-117.gif It's uses just the standard GM format so I'm sure a conventional one is available for a 100 bucks or so.
Don't focus on the tranny codes. On a used car focus on the condition of the tranny fluid. I will bet only one in ten of these vehicles that sit on used car lots have had their tranny's completely flushed and filter changed even once. That is what is important. Many 97s will have 140,000 km at the very least and very few will have seen a fluid change. That is not good for long life. Codes don't show that.
Going by the parts lists, 99 seem to have had a big change. I think the safety was greatly improved. I remember reading about how unsafe the earlier units proved out to be in crash tests. For example, there is a huge difference in crash worthiness between a 99 and a 2000 LeSabre.
Only good thing I can see about this car is that it uses regular gas. I can't see been able to get rid of a used one easily for a decent buck. However, each to his own.