Transmission Shops

[02NavyBlue]

Probably because it's not a common thing to have done in a shop, and they're just going to tell you need a rebuild. Lots of people on these forums have put in shift kits, even some average DIY'ers like me. If it's knowledge you need, there are 3 good posts that show it in pretty good detail. I have done it myself and may make a write-up more detailed than all 3 of these.
Shift kit install, very detailed (56K go watch a movie) - LS1TECH
Trans Go Shift Kit Installed - First Impressions - LS1TECH
4T65E Do-It-Yourself Shift Kit: Instructions and Install Guide

The tools/supplies needed are:
Trans fluid, Shift kit, filter to do a service while you are there, drip pan(>6 quarts), towels, ratchet, a 10mm, and 8mm socket.

If you still think you're not up to it, I'd keep calling different shops and explain that you know what you want done, and that you want a price.

I put a shift kit in my trans to fix that exact problem, as so many others have as well. It definitely is helping. But If I drive for a long time , the shifts still get slower, but not as slow as they used to. A trans cooler will be the final fix.

[Chadgervais]

Probably because it's not a common thing to have done in a shop,

A couple of them have radio ads saying they do shift kits. Thanks for the advice though. Oddly enough, usually it goes 1811 when its hot, but there have been a couple times my scangauge has read less than 180* and its done it. It definitely has firmer shifts when its cold (less than 100*)

[02NavyBlue]

A couple of them have radio ads saying they do shift kits. Thanks for the advice though. Oddly enough, usually it goes 1811 when its hot, but there have been a couple times my scangauge has read less than 180* and its done it. It definitely has firmer shifts when its cold (less than 100*)

Same here. On a cold morning it would shift almost instantly, to when hot, taking a half second in between shifts. I haven't gotten it to 200° since, but I've gotten close and it's not as bad as it was. I don't think it would throw a code anymore(Max adapt), but I want it to run cooler and perform better.

How's it look to you on difficulty?

[Chadgervais]

How's it look to you on difficulty?

More than I'm comfortable doing on my only car. Not to mention, I don't have a driveway, on street parking here. I would rather have it done by a shop, even though it would cost me more.

And to Anthony: This trans is/was well maintained. The fluid/filter was changed most recently at 175k by the old owner, he kept all the records. I believe this transmission has much more to give me, just needs those springs to be replaced.