High CCC One Value Low Settlement Offer – a first for me

TL;DR: Insurance offered me 60% of the value of my vehicle per their own CCC One report and I'm unsure of how to proceed other than sending back their own report.

I'm in the process of a total vehicle loss claim due to hail damage. The insurance company (GEICO), provided a CCC One report with a valuation for the vehicle (2007 Escalade EXT, good condition, low miles) at roughly $10,200. That value seems fair me. My gut estimate would have been slightly lower based on miles/age/condition. The insurance company is offering a settlement amount of roughly $6,000.

I've looked around and can't seem to find an instance of this scenario occurring. The usual strategy of insurance companies is to provide a CCC One valuation that is slightly low and base the settlement offer off that. It seems unusual for a company to provide a settlement offer this far below the CCC One valuation. How should I proceed? It seems like they provided me all the documentation I need for a higher counteroffer. Should I just send back the CCC One valuation they provided and counteroffer with that?[](javascript://nop)