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You can if the 99 is the new body design / nother words the 99 body will look like the 2003 body. In LATE 1999 chevy REDESIGNED all there engines and transmissions and NOTHING will interchange from 1999 down to late 1999 and up.

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โˆ™ 2011-09-11 23:02:16
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Q: Can you use a 1999 Chevy Silverado transmission in a 2003 Chevy Silverado?
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