Hi, I don't think you have a V-6 in that Envoy. I believe it is a 4.2L in-line 6 cyl. You might want to check that. Your Envoy is capable of pulling that trailer. I don't think the other poster is correct on the 6000 lb weight for a 22ft. Hi-Lo. That might be the GVW but I don't think it's that...