View 0 Photos View 0 Videos 2004 Allison 1000 RDS Transmission for a GMC C5500 $1,750 USD (USED) Allison 1000 RDS Assembly#: 6310385611 Input Lgth: AUTOMATIC Input Dia: AUTOMATIC Pilot Dia: AUTOMATIC ConditionUsedAssembly Number6310385611Fits To Make(s)GMCFits To Model(s)C5500Stock Number25927687 MLS Number14168295CategoryTransmissions Last Updated2/28/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info