Smartfix,
Here is the option codes my dealer gave me when I ordered. It's also in their computer when they special order a truck. This was for a Chevy.
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<H2>RPO Codes - Chevrolet Truck Silverado 2500HD</H2></TD></TR>
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<TD colSpan=2><SELECT onchange="if(this.optionsselectedIndex.value) location.href=(this.optionsselectedIndex.value)" name=page target="_blank" target="_blank"><OPTION ed value="#A">A - H<OPTION value="#I">I - P<OPTION value="#Q">Q - Z</></TD></TR>
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<TD align=middle width="8%">Option
Code</TD>
<TD>Description</TD></TR>
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<TD class=content width="20%"><A name=""></A>
<CENTER>**2 </CENTER></TD>
<TD class=content width="80%">Seat trim, leather</TD></TR>
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<CENTER>**C </CENTER></TD>
<TD class=content width="80%">Seat trim, cloth</TD></TR>
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<CENTER>**D </CENTER></TD>
<TD class=content width="80%">Seat trim, Custom Cloth</TD></TR>
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<TD class=content width="20%"><A name=""></A>
<CENTER>**V </CENTER></TD>
<TD class=content width="80%">Seat trim, vinyl</TD></TR>
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<CENTER>5B5 </CENTER></TD>
<TD class=content width="80%">Power windows and mirrors (MSRP = $738.00) with Regular Cab and Extended Cab Models C/K25903 and C/K25953 (MSRP = $815.00) with Crew Cab Models C/K25943</TD></TR>
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<CENTER>5G2 </CENTER></TD>
<TD class=content width="80%">Wheels, painted White (MSRP = $45.00)</TD></TR>
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<CENTER>5G4 </CENTER></TD>
<TD class=content width="80%">Provision for cab roof-mounted lamp (MSRP = $103.00)</TD></TR>
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<CENTER>5M7 </CENTER></TD>
<TD class=content width="80%">Provisions for speedometer calibration (MSRP = $2.00)Upfitter option</TD></TR>
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<CENTER>5Q1 </CENTER></TD>
<TD class=content width="80%">Tail Lamp delete (MSRP = -$27.00 Credit)</TD></TR>
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<CENTER>5V1 </CENTER></TD>
<TD class=content width="80%">Carrier with spare wheel - no tire (MSRP = $82.00)</TD></TR>
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<CENTER>5X7 </CENTER></TD>
<TD class=content width="80%">Provision for body mounted warning lamp (MSRP = $98.00)Provides an instrument panel mounted switch and heavy duty electrical relay with hook-up terminal in the engine compartment for a body upfitter to connect a body mounted warning or emergency lamp. 40 amp nominal rating.</TD></TR>
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<CENTER>5Y0 </CENTER></TD>
<TD class=content width="80%">Provision for body mounted lamp with hook-up wiring (MSRP = $88.00)Provides an instrument panel mounted switch and electrical hook-up behind the cab for a body upfitter to connect a body mounted warning or emergency lamp. 21 amp nominal rating.</TD></TR>
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<CENTER>5Z4 </CENTER></TD>
<TD class=content width="80%">Spare wheel and tire delete (MSRP = -$110.00 Credit)</TD></TR>
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<CENTER>6C7 </CENTER></TD>
<TD class=content width="80%">Console, roof with reading lamps (MSRP = $55.00)</TD></TR>
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<CENTER>6P3 </CENTER></TD>
<TD class=content width="80%">Camper Mirrors, remote control, power extendable, non heated (MSRP = $238.00)Alternative mirrors replacing mirrors that are standard wi