Had a transmission fluid flush done
I noticed that my shifts were getting ever so slightly firmer and harsher lately (my wife wouldn't have noticed it), so I went into get the transmission fluid changed. Its the original fluid at 84k miles. The guy said it was pretty dirty, but not horrible and certainly better than some he'* seen before. I had him change the filter while he was at it, and actually only paid $112 after taxes at jiffy lube for the whole job. My car now shifts noticeably smoother and more quickly than before, which alone is an indication that it was due for that transmission flush.
This is more for peoples' future reference than anything; my observation and recommendation for other Bonneville GXP owners is that for optimal transmission life, you should have your transmission fluid and filter replaced no later than 75k miles.
I'm a firm believer in preventative maintenance, and transmission flushes are one example I can't stress enough. All too often people get their transmission fluid changed only when they start having more severe problems, at which time its already too late. A $120 transmission fluid change is a lot cheaper than a $2000 rebuild.
2005 Pontiac Bonneville GXP - For Sale ----- 1995 Buick Regal GS(X) - L67 madness
2000 Buick Regal GSE - Stock...for now
----- 1987 Jaguar XJ-* V12 - 12>8