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Old 06-20-2013, 10:43 PM   #9
mlee's Avatar
Drives: 2018 Silverado
Join Date: Oct 2008
Location: Conroe, TX
Posts: 32,521
Originally Posted by Candr3535 View Post
I am pretty sure it's standard. In all SS 1LE, ZL1 models...
Optional on the SS.

The 1LE and ZL1 also have a different transmission.
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