Registration says 2007, VIN says 2006 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tinkering · 12-30-2020, 02:05 AM

My friend's GMC Sierra says 2007 on his registration but my free VIN search says 2006. How to tell for sure? Will being right on the cusp of generations cause me trouble with parts etc.?

EVRLET · 12-30-2020, 02:35 AM

As for parts, they have what they call Classics. I believe that was for the first half of 2007 and the trucks were part of the 1999-2006 year group. The last half of 2007 had the trucks that were part of the 2007-2013 year group. Just look at your front end design. If the Sierra looks like the 1999-2006 Sierras, then you’re in the Classic category.

Since 2007 was the transition year and if you know you’re in the Classic category, I would just search and buy parts for a 2006 Sierra.

**Palf70Step** · 12-30-2020, 08:15 AM

Yeah the free VIN services don't distinguish on the split years. I also had an 07 ( chevy in my case ) classic, that VIN search said was 06.

**hatzie** · 12-30-2020, 10:41 AM

2007 classic T800 was an odd model. There are more than a few parts that are specific to that year truck.

Look at the compliance sticker on the LH doorjamb or door for the actual build date... MM/YY.
Usually a model year runs from August of the year prior to July of the actual stated model year. August - December 2004 and January to July 2005 builds were 2005 model year. My 2005 was September 2004 build IIRC.

2007 was really weird since, I believe, they built T800 and T900 trucks from August 2006 through at least May of 2007. I might be wrong about the start of T900 production... it might've been delayed somewhat and the T800 might've been built right through July.
Keith Seymore might be able to say since he worked at GM in that timeframe.

71gmcC15 · 01-12-2021, 05:35 PM

I'm a proud owner of an 07 classic. It was built in July 2006. The owners manual and window sticker call it a Sierra classic. When ordering parts I just say 06. Although most parts stores will have it listed as 07 then model sierra classic. Thare are some thing that are 06 07 only like the seat harness plugs. Same wireing differt pin out and plug. The best way to say it is 06 and half. Then 07 up. Kida like 64 and half mustangs. I bet there titled as 65s. I aslo have 99 tahoe classic. It's fun owning carry over years. Haha

**BigBird05** · 01-12-2021, 09:05 PM

GM changed all of that starting month data. The 3rd week of July is the start of production. SOP. The last day of June is the end of production. With a lot of variations.

12-30-2020, 02:05 AM	#1
tinkering Registered User Join Date: Oct 2012 Location: BC AB Posts: 1	Registration says 2007, VIN says 2006 My friend's GMC Sierra says 2007 on his registration but my free VIN search says 2006. How to tell for sure? Will being right on the cusp of generations cause me trouble with parts etc.?

12-30-2020, 02:35 AM	#2
EVRLET Registered User Join Date: Aug 2015 Location: Las Vegas NV Posts: 354	Re: Registration says 2007, VIN says 2006 As for parts, they have what they call Classics. I believe that was for the first half of 2007 and the trucks were part of the 1999-2006 year group. The last half of 2007 had the trucks that were part of the 2007-2013 year group. Just look at your front end design. If the Sierra looks like the 1999-2006 Sierras, then you’re in the Classic category. Since 2007 was the transition year and if you know you’re in the Classic category, I would just search and buy parts for a 2006 Sierra. __________________ Customization is what you want it to look like -- not what other people think it should look like

12-30-2020, 08:15 AM	#3
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,608	Re: Registration says 2007, VIN says 2006 Yeah the free VIN services don't distinguish on the split years. I also had an 07 ( chevy in my case ) classic, that VIN search said was 06. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

12-30-2020, 10:41 AM	#4
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,912	Re: Registration says 2007, VIN says 2006 2007 classic T800 was an odd model. There are more than a few parts that are specific to that year truck. Look at the compliance sticker on the LH doorjamb or door for the actual build date... MM/YY. Usually a model year runs from August of the year prior to July of the actual stated model year. August - December 2004 and January to July 2005 builds were 2005 model year. My 2005 was September 2004 build IIRC. 2007 was really weird since, I believe, they built T800 and T900 trucks from August 2006 through at least May of 2007. I might be wrong about the start of T900 production... it might've been delayed somewhat and the T800 might've been built right through July. Keith Seymore might be able to say since he worked at GM in that timeframe. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 12-30-2020 at 05:57 PM.

01-12-2021, 05:35 PM	#5
71gmcC15 Registered User Join Date: Feb 2018 Location: Doland SD Posts: 836	Re: Registration says 2007, VIN says 2006 I'm a proud owner of an 07 classic. It was built in July 2006. The owners manual and window sticker call it a Sierra classic. When ordering parts I just say 06. Although most parts stores will have it listed as 07 then model sierra classic. Thare are some thing that are 06 07 only like the seat harness plugs. Same wireing differt pin out and plug. The best way to say it is 06 and half. Then 07 up. Kida like 64 and half mustangs. I bet there titled as 65s. I aslo have 99 tahoe classic. It's fun owning carry over years. Haha __________________ ( second times the charm) 71 gmc c15 307 sbc 373 rear gears positrac sm 465 trans. ( not listed on spid but is original ) 94 chevy k1500 350 tbi 373 rear gears 4l60e one wheel peel. Gutless 07 gmc sierra classic rcsb 4.3 lt 5 speed w/t 04 chevy Silverado 1500 ext cab 5.3 4l60e. 81 chevy Scottsdale k10 muncie sm465 Np208 10 bolt 8.2 ( Old Green)

01-12-2021, 09:05 PM	#6
BigBird05 Senior Member Join Date: Aug 2019 Location: Cheraw Posts: 1,305	Re: Registration says 2007, VIN says 2006 GM changed all of that starting month data. The 3rd week of July is the start of production. SOP. The last day of June is the end of production. With a lot of variations.

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