04 LB7 vin check need LINK to verify injector

Hi,
Looking to buy a 04 2500HD LB7 and need to get help on the dealer work done, in respect to Injector upgrade. We live in remote Alaska and dealer is not close by. Carfax was no help, second owner not sure. Truck has 124k on it.
VIN 1GCHK23184F112562

Thanks for any info or leads, dagerb:confused:

GM will have records for any warranty or non-warranty service work performed at a GM service center. They won't know about any service work performed at a non-GM facility.

If no one here offers a VIN check, you should be able to persuade a GM service manager near you to do a check. Offer him $20 for his time.

Jim