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What is it about the word “test” your not getting…it’s a test, not a way of driving the vehicle , the same way i test every truck that comes through my shop, or a transmission shop checks after a rebuild.

FYI, every automatic trans works the same way…so a google search on TCC will result in hundreds of responses.

That’s all normal behavior, your RPM’s won’t rise, you need to understand that the TCM gets input from TPS, CPS, TISS, TOSS…that’s why you keep your foot on the gas pedal and hit the brake pedal. The TCM knows by the fact you removed your foot off the gas via the TPS. You don’t have an...

The switch can be bad, out of adjustment, but your TCC does not unlock just because you take your foot off the throttle. Also, your TCM will generate a DTC if it’s either stuck locked, or stuck unlocked…pull codes from the TCM. you missed the point of my post, I pointed out the proper method to...

To test your TCC lockup, drive the truck down the road at 50mph, with your left foot, tap the brake pedal while keeping your right foot on the accelerator, upon tapping the brake, the rpm’s should spike u…