I don't have the part number handy but I will get it. Standby.

Drove the truck today and the vibration is gone so that cured it. Seemed like it took forever for the hubs to unlock each time though. Possibly due to cold I guess.

 

Forward calls it a solenoid vacuum valve. Part number is F81Z9H465BA

 

OK thanks will look up

<table width="100%" align="center" style="border: 1px solid rgb(230, 228, 229);" border="0" cellspacing="0" cellpadding="5"><tbody><tr><td align="center" class="savings" colspan="2">Part Number was superceded!</td></tr><tr><td class="titletext" colspan="2">Quick Order</td></tr><tr><td nowrap="">Old Part Number</td><td align="right">F81Z9H465BA</td></tr><tr><td nowrap="">New Part Number</td><td align="right">7C3Z9H465A </td></tr><tr><td>Part Name</td><td align="right">VALVE ASY </td></tr><tr><td>MSRP</td><td align="right">$84.08</td></tr><tr><td>Core</td><td align="right">$0.00</td></tr><tr><td>Online Price</td><td align="right">$52.97</td></tr></tbody></table>