[Big Daddy Bear]

This is the Hollander Interchange V.I.N. decoder for 1996 GMC trucks. As you can see the V.I.N. you listed breaks down as:

1=United States
G=General Motors
T=GMC truck, complete vehicle
E=6001-7000 GVWR
K=Conventional cab 4x4
1=1500 Sonoma
9=Extended cab/van
M=8-305 (5.0L) S.F.I. Chevy
0=Check digit
T=1996
E=Assembly plant

Hope this helps you figure out what you have.