Originally Posted by dbuzz77
both had trans coolers and the flow stopped because the coolers would not let the trans warm up. both were replaced under warranty. low and behold you have a bypass on your truck now.
Ever heard of cardboard,it makes a great Canuck winter front,if you don't have one.
I'm gonna out on a limb here,the cooler bypass went in for gas mileage more then anything.
Just how hard were you driving these while they were cold.
Did you let the vehicles have a decent warm-up/were they plugged in etc.
Got a few miles of cold weather driving under my belt,and the majority of cold weather tranny problems were by my stupidity more then anything
I've drove things at -50F,stick trannies wouldn't shift till you had a mile or 2 under your belt,auto's would groan and whine for a few minutes on start-up.
You didn't try to shift a stick till it warmed up some,and an auto you didn't boot it till it was warmed up some too,drive with the perverable "egg under the foot" when it's cold.
If you took 2 trannies out because of cold, i'm mighty suspicious of your cold weather driving habits and your cold weather preparation,just saying
Just for the record only some of the trucks have the cooler bypass.
Thanks TE,i sorta thought that'd be the principle they worked under.