Transmission temperature
CF Active Member
Joined: Feb 2007
Posts: 178
Likes: 2
From: Phoenix, AZ
RE: Transmission temperature
I have the "optional" factory trans cooler with 3:73 gears and just drove from Phoenix north thru Nevada and Idaho in some pretty warm temps (115+) towing a 3500 lb trailer and a few pretty long grades on the way and the highest the temp ever got was 213 degrees. Normally it ran under 190 degrees all the time.
CF Junior Member
Joined: Jun 2007
Posts: 41
Likes: 0
From:
RE: Transmission temperature
Made a trip today to Virginia Beach area my tranny temps were 208-210 running 70 MPH on semi flat roads not towing a trailer with one passenger....is this thing running a little warm?
Administrator
Joined: Apr 2006
Posts: 11,329
Likes: 193
From: KC, MO area
RE: Transmission temperature
ZX: Could one install the factory aux. cooler easily or would it involve cutting some hard lines? Also does the aux. cooler employ some kind of thermostat to prevent slushing the tranny fluid in extreme cold climates?
CF Addict
Joined: Aug 2006
Posts: 2,424
Likes: 4
From:
RE: Transmission temperature
The aux cooler is pretty easy to install and does not involve cutting oil lines.
The cooler does not employ a thermo bypass valve, it is recommended that it be completely bypassed or removed in extremely cold weather.
The new Dexron fuids offer very good performance in cold weather as well.
The cooler does not employ a thermo bypass valve, it is recommended that it be completely bypassed or removed in extremely cold weather.
The new Dexron fuids offer very good performance in cold weather as well.
CF Addict
Joined: Aug 2006
Posts: 2,424
Likes: 4
From:
RE: Transmission temperature
ORIGINAL: genestoy
I have the "optional" factory trans cooler with 3:73 gears and just drove from Phoenix north thru Nevada and Idaho in some pretty warm temps (115+) towing a 3500 lb trailer and a few pretty long grades on the way and the highest the temp ever got was 213 degrees. Normally it ran under 190 degrees all the time.
I have the "optional" factory trans cooler with 3:73 gears and just drove from Phoenix north thru Nevada and Idaho in some pretty warm temps (115+) towing a 3500 lb trailer and a few pretty long grades on the way and the highest the temp ever got was 213 degrees. Normally it ran under 190 degrees all the time.
No such "option" offered with either a 2WD or any 3.73 equipped 2007 Tahoe.
The vehicle must be a 4X4 with 4.10 gear ratio to come from the factory with the optional KNP Aux Transmission Cooler.
Did you have this unit installed?
CF Senior Member
Joined: Jan 2007
Posts: 424
Likes: 2
From:
RE: Transmission temperature
ORIGINAL: ZX1100F1
The aux cooler is pretty easy to install and does not involve cutting oil lines.
The cooler does not employ a thermo bypass valve, it is recommended that it be completely bypassed or removed in extremely cold weather.
The new Dexron fuids offer very good performance in cold weather as well.
The aux cooler is pretty easy to install and does not involve cutting oil lines.
The cooler does not employ a thermo bypass valve, it is recommended that it be completely bypassed or removed in extremely cold weather.
The new Dexron fuids offer very good performance in cold weather as well.
CF Addict
Joined: Aug 2006
Posts: 2,424
Likes: 4
From:
RE: Transmission temperature
Generally speaking if you operate in the lower 48 then you are not affected.
Extreme cold is typically in reference to the Arctic region were synthetic arctic ATF fluids are recommended.
Extreme cold is typically in reference to the Arctic region were synthetic arctic ATF fluids are recommended.
