They were wrong. My car is proof of that. I have the stock cooler and another aftermarket. I'll end up replacing BOTH with a much larger thermostat controlled unit before winter.

where did u mount the other tranny cooler at and how did u run it?

My aftermarket cooler is mounted right in front of my stock cooler. Through one, then then other, then the radiator.

A second tranny cooler?

are you pulling a horse trailer with that car???

i have always heard that the stock cooler was enough and not to waste money on it. there are alot of other mods that i would spend my money on before a tranny cooler - some kind of cold air intake for example.

Let'* not confuse the 4T65 with the 4T60. Most 4T60'* will reach twice the mileage as a 4T65, and the final 'take down' is usually heat-related. Not so for the 4T65.

It'* a known fact that under most conditions, a tranny cooler can extend the life of the trans, especially on a modded car. This is particularly true for the 92-96 Bonnevilles with the 4T60E.

Research on the 4T65 seems to point to the LACK of need for a tranny cooler. Kennginn has a 92. He will benefit from it.

A second cooler won't hurt at all unless you're into weight reduction, even then you'll save yourself maybe .001 seconds try a good K&N air filter for bang for your buck, just make %100 sure everything else is squared away before you star jacking the boost levels. But all and all I would say the best advice / question was already posted by BonneMeMN. What do you want with the car? Street-Strip? Quicker or balls-out fast? The first mod is the plan of what you are doing. It will save you time and money, and will keep you from doing things twice when not necessary

Willwren,

that is good info. it is a shame that the stock equipment doesn't do the best job, only what it "needs" too. I have put tranny coolers on my trucks before, but i did not consider it for a car until i was really racing it.

Are you running the temperature cut out? the equipment that bypasses the cooler until the fluid reaches 180 deg? i have heard that over-cooling is almost as bad for a tranny as over-heating. i ran a by-pass on my pick-up and it worked great. you could tell when the cooler was engaged - the temp on the fluid would drop to 180 almost instantly.

I'll be running a cutout by winter.

What sucks isn't the 4T60'* heat problem. What sucks is that most 4T65'* (supposed to be improved) typically only last half that before their major malfunction.