I had good service from GMPD also. I think the way they operate may have to do with shipping delays sometimes. I don't think they stock stuff themselves. I think they are an entity that takes the order, and then finds a dealer that has the part and then brokers the deal. The dealer gets maybe a little above wholesale for the part, GMPD takes a small cut for brokering the deal and buyer gets a deal better than retail. I think they might work that way because I order some stuff from them and it was shipped to be from a dealership somewhere out east.
1999 SSE. 108K. Cleared Corners, Mobile 1, Energy Suspension endlinks. Ported and Polished LIM, NGK TR-55 Sparkplugs, 180 drilled Intense stat, Flow matched injectors, Intense FWI, Intense PCM, MagnaFlow Cat.