Doug_Scott

I purchased VCIM number 20827036 off of ebay for $199. Installed it into my 2010 Sierra SL, it goes behind the panel that has the ashtry in it. After it was in, I had the red light for OnStar, but the bluetooth worked straight away. I pressed the emergency button on the mirror, and told the operator that it was the only button that worked and about the red light, she passed me on to techsupport. Techsupport had me on the phone for about 15 minutes while they did some stuff, but the red light remained. The techshupport guy applogized for taking so long, and gave me 100 minutes of phone credit to compensate. He also said I needed to go to the dealer to get it finished. Booked an appt with my dealer, and took it in on that day and left it. They called about 2 hours later and said it was all done, but it would not be fully working until the next day. I went in to get the truck expecting to pay about $75, but it was no charge. Next day (actually today) I tried Onstar, the light was green and it connected to the operator, but she said there was still something not activated properly, and passed me on to tech support. Tech support took another 15 min to get it fixed, and they did fix it, Onstar works, green light and all. The tech support guy applogized for the long wait, extended my OnStar another 3 months no charge, and gave me another 130 minutes of phone credit. All in all, I got a total of 230 minutes of phone time, and 3 months free service, and I did not even have to complain. Biggest surprise was the no charge from the dealer though.

So basically the same as the current Nevada\Cheyenne editions. Note that rare does not always mean desireable. You could get a 67 Camaro with bench seat and column shift, it is rare simply because it was not desireable.

It may be self explanitory, but I noticed that the term "noob" has been used in about 7 or 8 posts in this very thread, but is not on the list... ironic?

That's not true. I don't have an external cooler. Driving down the highway, my trans runs about 80 to 90 degrees hotter than the outside temperature. 100 degree day, my trans is at 185. The engine may be at 210 degrees, but the coolant in the radiator isn't that hot unless the engine is really working. Your thermostat will start to open at 210 degrees, not be wide open at that temp. I monitor my tranny temps with a scanguage II. I think you are confusing the fan switch with the thermostat. When did GM switch from the 195 degree one? The fan may come on at 210 degrees, but the thermostat was opened at 195 degrees. You are also comparing temps at two different locations. The trans will be the same temp as the rad normally. Normally means that you are not running the torque convertor at stall speed (not locked up, but engine is running faster than the input shaft of transmission). Once the convertor is locked up, very little heat is generated by the trans. Your scangauge is reading the trans temp from the vehicles computer, the same thing that feeds the information to DIC and is exactly as accurate. My point was that there is no way 200 degrees is considerd high for a trans. If you can explain why that is, go for it.

Given that trans fluid uses the engine radiator to cool it (assuming no external cooler), your trans at best will run the same temp as the engine. If the rad is 200 degrees, so is trans fluid. Also remember that engines can and do run at 230 degrees in some situations, so will the trans. The rad cap will increase the boiling point of coolant 4 degrees for every pound of pressure, so a 15 pound rad cap (pretty much the norm) will keep coolant from boiling untill 272 degrees.