crew cab with the 4:10 ratio comes with the same tranny or do they have different gearing in the transmission to accomodate the 4:10 rear?

 

Same transmission, just could have a different gear ratio

 

cheaperrooter,

For the 2013 Silverado 2500 Crew Cab Standard Box with the 4:10 ratio the MYD 6-Speed Automatic Transmission the gear ratios are as follows:

<table align="center" border="1" cellpadding="2" cellspacing="0" width="90%"> <tbody> <tr> <td class="contenthead" colspan="2" align="center">MYD 6-SPEED AUTOMATIC TRANSMISSSION
</td></tr> <tr> <td align="left" valign="top" width="50%">Transmission model</td> <td align="center" valign="top" width="50%">AUTOMATIC 6-SPEED HYDRA-MATIC 6L90</td></tr> <tr> <td align="left" valign="top" width="50%">RPO Code</td> <td align="center" valign="top" width="50%">MYD</td></tr> <tr> <td align="left" valign="top" width="50%">GEAR RATIOS</td> <td align="center" valign="top" width="50%"> </td></tr> <tr> <td align="left" valign="top" width="50%"> First </td> <td align="center" valign="top" width="50%">4.03</td></tr> <tr> <td align="left" valign="top" width="50%"> Second </td> <td align="center" valign="top" width="50%">2.36</td></tr> <tr> <td align="left" valign="top" width="50%"> Third </td> <td align="center" valign="top" width="50%">1.53</td></tr> <tr> <td align="left" valign="top" width="50%"> Fourth </td> <td align="center" valign="top" width="50%">1.15</td></tr> <tr> <td align="left" valign="top" width="50%"> Fifth </td> <td align="center" valign="top" width="50%">0.85</td></tr> <tr> <td align="left" valign="top" width="50%"> Sixth </td> <td align="center" valign="top" width="50%">0.67</td></tr> <tr> <td align="left" valign="top" width="50%"> Reverse </td> <td align="center" valign="top" width="50%">3.06</td></tr> <tr> <td align="left" valign="top" width="50%">TORQUE CONVERTER</td> <td align="center" valign="top" width="50%"> </td></tr> <tr> <td align="left" valign="top" width="50%"> Size (in./mm.) </td> <td align="center" valign="top" width="50%">11.81/299.974</td></tr> <tr> <td align="left" valign="top" width="50%">Maximum Engine Torque (lb-ft/N-m)</td> <td align="center" valign="top" width="50%">531/716.85</td></tr> <tr> <td align="left" valign="top" width="50%">LUBRICANT CAPACITY (pints/litre)</td> <td align="center" valign="top" width="50%"> </td></tr> <tr> <td align="left" valign="top" width="50%"> Refill </td> <td align="center" valign="top" width="50%">27.47/12.998804</td></tr> <tr> <td align="left" valign="top" width="50%">MAX GVW(lbs/kg)</td> <td align="center" valign="top" width="50%">15000/6804</td></tr> <tr> <td align="left" valign="top" width="50%">MAX GCWR(lbs/kg)</td> <td align="center" valign="top" width="50%">21000/9525.6</td></tr></tbody></table>
Hope this helps. If you need any more assistance please just let us know.

Erica Tiffany
Chevrolet Customer Service