2000 Chevrolet Blazer Took Truck Autozone Code Told Gas Cap Replaced Cap Days

2000 CHEVROLET BLAZER
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i took my truck to autozone, the code told me it was my gas cap, i replaced the gas cap. a few days later reverse went out, then my 3rd and 2nd gears went out. So i replaced the transmission. it still wasnt shifting and the speedometer wasnt working, so we got a dierent transmission and the same problem occurs. So i am stuck as to what is wrong with my truck. With replacing 2 different transmissions and the speed sensor, what is the problem?
Oct 19, 2012 at 3:49 PM
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KHLOW2008
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Retrieve the trouble codes again and post EXACT codes here so we can understand the problem.
Oct 19, 2012 at 4:55 PM
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