(Used) 1998 GM/Chev (HD) (AT), TRANSMISSION ASSEMBLY- Model: Gm Hydramatic, Serial Number: 39790, Part Number: 24208421, Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921