The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

bmacdona · 05-05-2010, 10:46 AM

The drivers side cowl vent was dropped for '51, so this would be a 50 or earlier.

Hope this helps!

From the Wikipedia page:

Early 1949 - Gas tank now mounted upright behind seat in cab; filler neck aft of passenger door handle. New serial number codes: GP 1/2 ton, GR 3/4 ton, & GS 1 ton.

Late 1949 - Hood side emblems no longer read "Thriftmaster" or "Loadmaster", but are now numbers that designate cargo capacity: 3100 on 1/2 ton, 3600 on 3/4 ton, 3800 on 1 ton. Serial number codes remain the same as on early 1949.

1950 - Telescopic shock absorbers replace lever-action type. Last year for driver's side cowl vent, its handle is now flat steel, not maroon knob as in previous years. New serial number codes: HP 1/2 ton, HR 3/4 ton, & HS 1 ton.

1951 - Doors now have vent windows. Mid-year change from 9-board bed to 8 boards per bed. Last year for 80 MPH speedometer, chrome window handle knobs, and chrome wiper knob. New serial number codes: JP 1/2 ton, JR 3/4 ton, & JS 1 ton.

05-05-2010, 10:46 AM	#10
bmacdona Registered User Join Date: Dec 2009 Location: Olympia, WA Posts: 28	Re: vin locations for ADs The drivers side cowl vent was dropped for '51, so this would be a 50 or earlier. Hope this helps! From the Wikipedia page: Early 1949 - Gas tank now mounted upright behind seat in cab; filler neck aft of passenger door handle. New serial number codes: GP 1/2 ton, GR 3/4 ton, & GS 1 ton. Late 1949 - Hood side emblems no longer read "Thriftmaster" or "Loadmaster", but are now numbers that designate cargo capacity: 3100 on 1/2 ton, 3600 on 3/4 ton, 3800 on 1 ton. Serial number codes remain the same as on early 1949. 1950 - Telescopic shock absorbers replace lever-action type. Last year for driver's side cowl vent, its handle is now flat steel, not maroon knob as in previous years. New serial number codes: HP 1/2 ton, HR 3/4 ton, & HS 1 ton. 1951 - Doors now have vent windows. Mid-year change from 9-board bed to 8 boards per bed. Last year for 80 MPH speedometer, chrome window handle knobs, and chrome wiper knob. New serial number codes: JP 1/2 ton, JR 3/4 ton, & JS 1 ton.