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am I wrong or are other people stupid?
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<blockquote data-quote="d_daffron" data-source="post: 547828" data-attributes="member: 4983"><p>Unless the EZ Tcu has a input that will allow you to tell it when you're in low range don't waste your money putting a GM sensor in your transfer case, it will not shift correctly when in low range. </p><p></p><p>Have you tried starting from scratch going through the setup process in the TCU? there are two speed sensors on a 4L80, make sure youre plugged in the rear speed sensor. </p><p></p><p>My guess would be something in the programming of the TCU. It doesnt have any way to know how fast you are actually going so it should shift the same in low range as it does in high range. The only difference would be the throttle position sensor because you wouldnt be applying as much throttle to accelerate in low range as you are in high range. Have you checked the throttle position sensor? Maybe a bad spot in the sensor?</p></blockquote><p></p>
[QUOTE="d_daffron, post: 547828, member: 4983"] Unless the EZ Tcu has a input that will allow you to tell it when you're in low range don't waste your money putting a GM sensor in your transfer case, it will not shift correctly when in low range. Have you tried starting from scratch going through the setup process in the TCU? there are two speed sensors on a 4L80, make sure youre plugged in the rear speed sensor. My guess would be something in the programming of the TCU. It doesnt have any way to know how fast you are actually going so it should shift the same in low range as it does in high range. The only difference would be the throttle position sensor because you wouldnt be applying as much throttle to accelerate in low range as you are in high range. Have you checked the throttle position sensor? Maybe a bad spot in the sensor? [/QUOTE]
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