4L80-E ?'s
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True Car Nut
Joined: Feb 2006
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From: Somewhere different on the globe every month....
4L80-E ?'*
Hi Everyone!! 
I took a 97 K3500 crew cab, long bed, vortec 5700, out for a test drive today. It has 75,xxx miles on her.
At full throtle,about 4500 rpm'*, ~70 mph, it felt like the torque converter locked up, while at WOT.
Does this sound like it may be a problem? I checked the fluid before we left; it is nice and red. The oil looks good too, but that is a side note, lol.
Is the way the TC locked up something to be concerned about?
Thank you!!
Cheetah
I took a 97 K3500 crew cab, long bed, vortec 5700, out for a test drive today. It has 75,xxx miles on her.
At full throtle,about 4500 rpm'*, ~70 mph, it felt like the torque converter locked up, while at WOT.
Does this sound like it may be a problem? I checked the fluid before we left; it is nice and red. The oil looks good too, but that is a side note, lol.
Is the way the TC locked up something to be concerned about?
Thank you!!
Cheetah