Sound system, delete (SEO)

Years 2002, 2005–06 Models 2 Factory citations 3

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Also described as Radio delete (SEO)

Documented applications

Silverado — GMT800 (1999–2007)

2005–2006 Factory-verified

GM Heritage factory kit — 2005 Chevrolet Silverado 1500, p.196.
GM Heritage factory kit — 2006 Chevrolet Silverado, p.261.

Tahoe — GMT800 (2000–2006)

2002 Factory-verified

known only from the 2003 Tahoe Special Service Vehicle kit change notes (p.177), which list "SEO (9R3) Radio delete" among the 2003 deletions, so it was offered for 2002; no 2002 page prints it and no other year is claimed

GM Heritage factory kit — 2003 Chevrolet Tahoe, p.177.

This page aggregates every documented appearance of 9R3 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.