DD letters on a '60-'66 Chevy/GMC VIN tag - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*LILRED66* · 01-24-2010, 10:31 AM

What do the two capital letters "DD" on the top portion of a factory VIN tag on a '60-'66 Chevy/GMC truck? Not all of mine have them, but several do. I have seen this on the VIN of many light-duty trucks, including C10, C20, C30, K10 & K20.

62 short step · 01-24-2010, 10:53 AM

Daily Driver! Sorry Tony i couldnt resist!

*LILRED66* · 01-24-2010, 12:07 PM

Funny...I was thinking Designated Driver. I have looked for this information before, to no avail. Maybe one of the '60-'66 Chevy/GMC truck experts will chime in soon. Thanks for your Sunday morning humor...I got a laugh out of it.

jchav62 · 01-24-2010, 02:28 PM

Quote:

Originally Posted by 62 short step

Daily Driver! Sorry Tony i couldnt resist!

That's exactly what I was thinking....

padresag · 01-24-2010, 03:14 PM

what model of truck is it on
ron

jonzcustomshop · 01-24-2010, 03:43 PM

mine is a 65 chev 1/2 ton long fleet..

*LILRED66* · 01-24-2010, 05:58 PM

Quote:

Originally Posted by padresag

what model of truck is it on
ron

Light-duty trucks, including C10, C20, C30, K10 & K20 models.

62gmc910 · 01-24-2010, 06:03 PM

Quote:

Originally Posted by LILRED66

Funny...I was thinking Designated Driver. I have looked for this information before, to no avail. Maybe one of the '60-'66 Chevy/GMC truck experts will chime in soon. Thanks for your Sunday morning humor...I got a laugh out of it.

and your what a newbie

I am wondering if it has to do with a truck built for a specific dealer???

*LILRED66* · 01-24-2010, 06:06 PM

Doubtful, since I have it on several trucks, that are from all over the country. Maybe it stands for Domestic Dealer, but I would like to know for sure.

mbgmike · 01-24-2010, 06:09 PM

I thought it stood for Double Duty. I could be wrong though. I had Cab and chassis trucks (64 and 65)from the utility companies and they all had the DD

When I bought them all the frame rails had to be extended on the rear and their was not one single bed bracket on them. in fact on one I had to drill the holes. I think they were used mainly for commercial trucks. Like ice cream vehicles,mile trucks, utility trucks etc.

Oh yeah and my 65 only came with one visor over the drivers side. None on passenger. Had the hole but never had one attached. I rode around and drove these trucks when I was young. I heard them called that but never really knew why. Seems like a regular truck

**DPowers** · 01-24-2010, 06:33 PM

Some info here:
http://www.autoevolution.com/news/ho...ates-4648.html

**DPowers** · 01-24-2010, 06:35 PM

Quote:

Originally Posted by DPowers

Some info here:
http://www.autoevolution.com/news/ho...ates-4648.html

If I am reading that correctly DD is 4 4
Which is North America United States

?????

62gmc910 · 01-24-2010, 06:46 PM

What I ment to say was that they may have been special order trucks not to one specific dealer (sometimes what you type is not what you were thinking)

mbgmike · 01-24-2010, 07:00 PM

Quote:

Originally Posted by DPowers

If I am reading that correctly DD is 4 4
Which is North America United States

?????

I don't think that applies to any of the older VIN numbers since they changed them. ALL the old parts manuals refered to the GM part and would say ie) (except Double Duty) which meant it did not fit.

Rich 5150 69 · 01-24-2010, 08:44 PM

My 64 c10 has the DD on it as well..!

LeftCoast32 · 01-24-2010, 09:48 PM

My 1966 has the DD and it was a special order K15 4X4 Cab & Chassis by the State of California. Dont know if this helps but there has to be a link and reason some have it and others dont.

protrash64 · 01-24-2010, 10:29 PM

....maybe it was the chick that made the vin tags.

*LILRED66* · 01-24-2010, 11:46 PM

Quote:

Originally Posted by mbgmike

I thought it stood for Double Duty. I could be wrong though. I had Cab and chassis trucks (64 and 65)from the utility companies and they all had the DD

When I bought them all the frame rails had to be extended on the rear and their was not one single bed bracket on them. in fact on one I had to drill the holes. I think they were used mainly for commercial trucks. Like ice cream vehicles,mile trucks, utility trucks etc.

Oh yeah and my 65 only came with one visor over the drivers side. None on passenger. Had the hole but never had one attached. I rode around and drove these trucks when I was young. I heard them called that but never really knew why. Seems like a regular truck

All of the trucks I am referring to, have factory beds on them, with all the standard rear frame rail brackets, holes and bed stand-offs, so this is not the case. None of the rear frame rails have been extended.

Passenger side sun visors were an option and many trucks did not have them from the factory. The cab roof will have dimples from the factory, in the correct locations, in order to install an passenger side visor.

I am hopeful there is a reference to the DD in the GM literature, so we all know for sure.

*LILRED66* · 01-24-2010, 11:51 PM

I thought sure padresag or factorystock would know...are you guys out there? Do you know what the DD on the top portion of the Chevy light-duty trucks in '60-'66 means? Thanks for your help.

jgh64pkup · 01-25-2010, 12:37 AM

Quote:

Originally Posted by protrash64

....maybe it was the chick that made the vin tags.

i bet so

*LILRED66* · 01-25-2010, 11:48 PM

The mystery continues.

mbgmike · 01-26-2010, 06:06 PM

Quote:

Originally Posted by LILRED66

All of the trucks I am referring to, have factory beds on them, with all the standard rear frame rail brackets, holes and bed stand-offs, so this is not the case. None of the rear frame rails have been extended.

Passenger side sun visors were an option and many trucks did not have them from the factory. The cab roof will have dimples from the factory, in the correct locations, in order to install an passenger side visor.

I am hopeful there is a reference to the DD in the GM literature, so we all know for sure.

I was just refering to the trucks I owned not all the trucks. Like I said all the old parts manual called it "Double Duty"

mbgmike · 01-26-2010, 06:47 PM

There is a address you can go to at the Vintage Gm site and email a group of older GM retirees that volunteer to answer Questions about GM vehicles. I emailed them an I will post what they Reply

padresag · 01-26-2010, 11:23 PM

Quote:

Originally Posted by LILRED66

I thought sure padresag or factorystock would know...are you guys out there? Do you know what the DD on the top portion of the Chevy light-duty trucks in '60-'66 means? Thanks for your help.

I did answer elsewhere a comment. perhaps it could have been for a customer order and dated delivery. ones that went for dealer inventory didn't have it . could explain random showing
ron

*blackedoutharley* · 01-27-2010, 12:52 AM

My '65 C-10 LWB fleetside has it as well.

01-24-2010, 10:31 AM	#1
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	DD letters on a '60-'66 Chevy/GMC VIN tag What do the two capital letters "DD" on the top portion of a factory VIN tag on a '60-'66 Chevy/GMC truck? Not all of mine have them, but several do. I have seen this on the VIN of many light-duty trucks, including C10, C20, C30, K10 & K20. Last edited by LILRED66; 01-24-2010 at 05:57 PM.

01-24-2010, 10:53 AM	#2
62 short step Senior Member Join Date: Aug 2005 Location: Greenwell Springs, Louisiana Posts: 2,882	Re: DD letters on a '60-'66 Chevy/GMC VIN tag Daily Driver! Sorry Tony i couldnt resist! __________________ www.louisianaclassictruckclub.com 1965 c-10 86 chevy c/k 20

01-24-2010, 12:07 PM	#3
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: DD letters on a '60-'66 Chevy/GMC VIN tag Funny...I was thinking Designated Driver. I have looked for this information before, to no avail. Maybe one of the '60-'66 Chevy/GMC truck experts will chime in soon. Thanks for your Sunday morning humor...I got a laugh out of it.

01-24-2010, 03:14 PM	#5
padresag Registered User Join Date: Feb 2008 Location: Sidney,b.c. Posts: 4,425	Re: DD letters on a '60-'66 Chevy/GMC VIN tag what model of truck is it on ron

01-24-2010, 03:43 PM	#6
jonzcustomshop 1961 crewcab Join Date: Dec 2007 Location: missoula, mt Posts: 6,164	Re: DD letters on a '60-'66 Chevy/GMC VIN tag mine is a 65 chev 1/2 ton long fleet.. Attached Images __________________ 60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955

01-24-2010, 06:06 PM	#9
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: DD letters on a '60-'66 Chevy/GMC VIN tag Doubtful, since I have it on several trucks, that are from all over the country. Maybe it stands for Domestic Dealer, but I would like to know for sure.

01-24-2010, 06:09 PM	#10
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: DD letters on a '60-'66 Chevy/GMC VIN tag I thought it stood for Double Duty. I could be wrong though. I had Cab and chassis trucks (64 and 65)from the utility companies and they all had the DD When I bought them all the frame rails had to be extended on the rear and their was not one single bed bracket on them. in fact on one I had to drill the holes. I think they were used mainly for commercial trucks. Like ice cream vehicles,mile trucks, utility trucks etc. Oh yeah and my 65 only came with one visor over the drivers side. None on passenger. Had the hole but never had one attached. I rode around and drove these trucks when I was young. I heard them called that but never really knew why. Seems like a regular truck Last edited by mbgmike; 01-24-2010 at 06:23 PM.

01-24-2010, 06:33 PM	#11
DPowers One foot in front of the other Join Date: Aug 2008 Location: Parrottsville, TN Posts: 5,454	Re: DD letters on a '60-'66 Chevy/GMC VIN tag Some info here: http://www.autoevolution.com/news/ho...ates-4648.html

01-24-2010, 06:46 PM	#13
62gmc910 Registered User Join Date: Nov 2009 Location: Cremona AB Canada Posts: 370	Re: DD letters on a '60-'66 Chevy/GMC VIN tag What I ment to say was that they may have been special order trucks not to one specific dealer (sometimes what you type is not what you were thinking) __________________ 62 GMC 910 short fleetside 454 super t10 14 bolt w/gov lock 70s c20 front discs (built in the 80s) 65 GMC 930 dualwheel 292 4spd all origonal 39k mi(my sons truck) 63 GMC 950 camperized school bus, (Gus the bus) 350 4speed 2 speed rear 64 GMC 950 "spare" bus 283? 4speed detroit locker 53 GMC 1ton dual wheel bus 78 GMC c25 short course off road race truck(son's truck) 355 th400 14 bolt (www.wheel2wheel.ca) 88 Peterbilt 379 longhood (hauls race truck)

01-24-2010, 08:44 PM	#15
Rich 5150 69 Registered User Join Date: Nov 2009 Location: Galt, Calif Posts: 2,437	Re: DD letters on a '60-'66 Chevy/GMC VIN tag My 64 c10 has the DD on it as well..! __________________ `64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip

01-24-2010, 09:48 PM	#16
LeftCoast32 Custom Builder Join Date: Jun 2003 Location: Carlsbad, California Posts: 908	Re: DD letters on a '60-'66 Chevy/GMC VIN tag My 1966 has the DD and it was a special order K15 4X4 Cab & Chassis by the State of California. Dont know if this helps but there has to be a link and reason some have it and others dont. __________________ 1932 Chevy Roadster Car and Pick-Up - http://67-72chevytrucks.com/vboard/s...d.php?t=465709 1966 K20 Factory 4X4 - http://67-72chevytrucks.com/vboard/s...d.php?t=455484 (Sold) 1972 K5 Blazer (Sold) - http://67-72chevytrucks.com/vboard/s...ad.php?t=87530 2007 TrailBlazer SS - http://67-72chevytrucks.com/vboard/s...34#post4706534

01-24-2010, 10:29 PM	#17
protrash64 Resistance is Futile Join Date: Dec 2006 Location: Mesa,Arizona Posts: 3,520	Re: DD letters on a '60-'66 Chevy/GMC VIN tag ....maybe it was the chick that made the vin tags. __________________ 64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device

01-24-2010, 11:51 PM	#19
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: DD letters on a '60-'66 Chevy/GMC VIN tag I thought sure padresag or factorystock would know...are you guys out there? Do you know what the DD on the top portion of the Chevy light-duty trucks in '60-'66 means? Thanks for your help.

01-25-2010, 11:48 PM	#21
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: DD letters on a '60-'66 Chevy/GMC VIN tag The mystery continues.

01-26-2010, 06:47 PM	#23
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: DD letters on a '60-'66 Chevy/GMC VIN tag There is a address you can go to at the Vintage Gm site and email a group of older GM retirees that volunteer to answer Questions about GM vehicles. I emailed them an I will post what they Reply



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01-27-2010, 12:52 AM	#25
blackedoutharley Account Suspended Join Date: Jul 2007 Location: Plumas Lake, Ca. Posts: 1,009	Re: DD letters on a '60-'66 Chevy/GMC VIN tag My '65 C-10 LWB fleetside has it as well.

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