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Old 02-17-2005, 09:14 AM
remmans remmans is offline
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Re: 4T80E downshifting or will not shift

I replaced the Speed Sensor, shift solenoids & the TCC when I had the tranny out. After I replaced the Alternator because it was charging at 17.2 volts it seemed to shift fine but I only took it the car for about 10 miles with no problems. The Alternator still shows that it is charging at 16.2 volts? I think I am going to take the alternator that I took out and get it tested. Does anybody think it might be the BCM that would be doing this? For some reason I am thinking my problem is not done with yet! I am going to take it for a few more trips before I consider this car road ready
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