XDP Xpressor OER Series Reman GT3788VA Replacement Turbocharger XD553The XDP Xpressor Turbo (Remanufactured Stock Replacement) XD553 is a direct fit replacement for the failed turbo in your 2004. 5 2005 GM 6. 6L Duramax LLY. Issues such as a lack of lubrication, oil contamination, worn seals, excessive temperatures, and over speeding can slowly cause damage to the turbo in your Chevy or GMC truck. Signs of turbocharger failure can include a loss of power, decrease in fuel economy, noisy operation, excessive smoke,