Confused - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RJ100 · 02-27-2019, 11:45 AM

My GMC Yukon is titled 1999. But it has the 1998 body style. I am having trouble getting the right parts for it. I also want a service manual for it but don't know what to order. Please, any help is appreciated . Thanks

JWall · 02-27-2019, 11:49 AM

Quote:

Originally Posted by RJ100

My GMC Yukon is titled 1999. But it has the 1998 body style. I am having trouble getting the right parts for it. I also want a service manual for it but don't know what to order. Please, any help is appreciated . Thanks

If it was me I would order parts for a 1998 Yukon.
99 being a switchover year in bodystyles creates confusion.

My buddy had a 2000 1-ton truck (98 bodystyle) & we always ordered parts for a 98 to eliminate confusion.

Deer_hunter_088 · 02-27-2019, 12:01 PM

the yukons and suburban ran the obs body style until 1999 or 2001 iirc. they were the same from 1995 till the cut off, if I were you I would order for a 98 Yukon, as they should be the same parts.

**Palf70Step** · 02-27-2019, 03:03 PM

I had a similar issue when I had my 2007 OBS Silverado, another crossover year. I just ordered for the 2006 Model. Worked fine

SCOTI · 02-27-2019, 06:34 PM

Quote:

Originally Posted by Deer_hunter_088

the yukons and suburban ran the obs body style until 1999 or 2001 iirc. they were the same from 1995 till the cut off, if I were you I would order for a 98 Yukon, as they should be the same parts.

And crew cabs.

Troy Sr · 02-27-2019, 06:39 PM

I had a 1999 Tahoe, it was an early model, mid year the body style changed, I always told the parts store it was a "1999 early model" and never got the wrong parts. I can't say this about a Yukon but I would guess it's the same.

RJ100 · 02-28-2019, 05:23 PM

I want to thank everyone for the information. What a great board and great members.

**hatzie** · 03-03-2019, 09:58 AM

The 2000 C2500's can be GMT400 chassis as well...
My 2000 C2500 GMC C2500 work truck has a 6.5L diesel.

I don't think any of the SUVs were T800 series til 2001 or 2002.

Try explaining this to the 18hour per week counter kid at O'Riley or AutoZone or ... Tell them you have a 2000 with a diesel and they key in the dirytmax.

Tom · 03-07-2019, 04:08 PM

Quote:

Originally Posted by Palf70Step

I had a similar issue when I had my 2007 OBS Silverado, another crossover year. I just ordered for the 2006 Model. Worked fine

Huh? 88-98's have always been OBS. 99+ gen was NBS.

**Palf70Step** · 03-07-2019, 04:12 PM

Quote:

Originally Posted by Tom

Huh? 88-98's have always been OBS. 99+ gen was NBS.

I was just using my experience as an example Tom, even though it was from a different year group. They reused OBS (sometime called classic) /NBS naming convention again for the 2007 year when they changed models mid year. Did not mean to cause confusion.

**hatzie** · 03-07-2019, 04:18 PM

Quote:

Originally Posted by Tom

Huh? 88-98's have always been OBS. 99+ gen was NBS.

That's the exact uninformed reaction I get when buying 6.5L diesel parts for my 2000 GMC C2500.

Some RV squares continued through 1991 in the SUV, 20, & 30 series. After GM started building the T400 trucks for 1988.
Some of the T400's continued through 2001. GM started building T800 trucks for 1999.
2007 is a tighter transition but GM built T800 & T900 trucks for the 2007 model year.

Gunner41 · 03-08-2019, 12:13 AM

Good question. Im wondering if you put in the VIN to the auto parts stores (Autozone etc.) what would come back???? Hmmm

rpmerf · 03-08-2019, 11:31 AM

My father has the same problem. 1999 Sierra Classic. Everywhere you look says it should have a 5.3, but it has a 5.0. Just order parts for a 98.

Tom · 03-08-2019, 02:17 PM

Quote:

Originally Posted by hatzie

That's the exact uninformed reaction I get when buying 6.5L diesel parts for my 2000 GMC C2500..

Nothing uninformed about my statement. Yes, some OBS body styles continued after 98, they certainly did not make it to 2007. Do you also get upset when people assume a vortec 5.7L uses CPI since mexico has a TBI version?

Palf70Step, no worries. Confusion is allowed at times haha.

**hatzie** · 03-08-2019, 02:43 PM

Quote:

Originally Posted by Tom

Nothing uninformed about my statement. Yes, some OBS body styles continued after 98, they certainly did not make it to 2007.

I was commenting about the somewhat fuzzy nature of the year transitions and the fact that they can't always be neatly pinned down.

T400 trucks are not just 88-98 and squarebodies are not just 73-87.

2007 is a year with both T800 & T900 production. No mention of T400 in that sentence.

Not sure where the grey market Central American trucks got into the act... I made no mention of them. Apparently you need to beware buying parts for those but that shouldn't be a shock.

What's mildly annoying is that I have to play weird games with the parts guys lest they sell me the wrong ones and sometimes they argue with me about selling me the parts I need.

BTW GM continued to change things... some 1998 parts are not the right fit on a 2000 T400.

rickpilgrim · 03-29-2019, 03:59 PM

I have a 2000 K3500 crew cab short box that is old body style and the new to us 99 C3500 crew cab long box that is also GMT400 style both are 7.4/4L80E trucks and yesterday I found out the 99 C3500 uses 99-07 upper ball joints and 88-98 lower ball joints. So much for easy part finding, bring old parts along to O Reilly’s

02-27-2019, 11:45 AM	#1
RJ100 Registered User Join Date: May 2005 Location: roanoke wv Posts: 60	Confused My GMC Yukon is titled 1999. But it has the 1998 body style. I am having trouble getting the right parts for it. I also want a service manual for it but don't know what to order. Please, any help is appreciated . Thanks

02-27-2019, 12:01 PM	#3
Deer_hunter_088 Registered User Join Date: Aug 2016 Location: Mount Carmel Illinois Posts: 1,321	Re: Confused the yukons and suburban ran the obs body style until 1999 or 2001 iirc. they were the same from 1995 till the cut off, if I were you I would order for a 98 Yukon, as they should be the same parts. __________________ 1994 k1500, Oldredz71(ext shorty 4x4 6 in lift) 1998 S10ZR2 2005 Silverado 2500hd(tow pig) Made in the USA, just like my trucks

02-27-2019, 03:03 PM	#4
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,746	Re: Confused I had a similar issue when I had my 2007 OBS Silverado, another crossover year. I just ordered for the 2006 Model. Worked fine __________________ 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!

02-27-2019, 06:39 PM	#6
Troy Sr Registered User Join Date: Nov 2013 Location: Antioch, Ca. Posts: 448	Re: Confused I had a 1999 Tahoe, it was an early model, mid year the body style changed, I always told the parts store it was a "1999 early model" and never got the wrong parts. I can't say this about a Yukon but I would guess it's the same. __________________ Take Care Troy

02-28-2019, 05:23 PM	#7
RJ100 Registered User Join Date: May 2005 Location: roanoke wv Posts: 60	Re: Confused I want to thank everyone for the information. What a great board and great members.

03-03-2019, 09:58 AM	#8
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,925	Re: Confused The 2000 C2500's can be GMT400 chassis as well... My 2000 C2500 GMC C2500 work truck has a 6.5L diesel. I don't think any of the SUVs were T800 series til 2001 or 2002. Try explaining this to the 18hour per week counter kid at O'Riley or AutoZone or ... Tell them you have a 2000 with a diesel and they key in the dirytmax. __________________ 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; 03-03-2019 at 10:10 AM.

03-08-2019, 12:13 AM	#12
Gunner41 Registered User Join Date: May 2011 Location: San Jose, Ca Posts: 93	Re: Confused Good question. Im wondering if you put in the VIN to the auto parts stores (Autozone etc.) what would come back???? Hmmm

03-08-2019, 11:31 AM	#13
rpmerf Registered User Join Date: Feb 2011 Location: Parkville, MD Posts: 1,024	Re: Confused My father has the same problem. 1999 Sierra Classic. Everywhere you look says it should have a 5.3, but it has a 5.0. Just order parts for a 98. __________________ 1970 C20 Custom Camper - 350, TH350 1997 GMC Suburban 1994 Acura Integra GSR 1987 Dodge Daytona Shelby Z

03-29-2019, 03:59 PM	#16
rickpilgrim Registered User Join Date: Apr 2011 Location: Wausau, WI Posts: 591	Re: Confused I have a 2000 K3500 crew cab short box that is old body style and the new to us 99 C3500 crew cab long box that is also GMT400 style both are 7.4/4L80E trucks and yesterday I found out the 99 C3500 uses 99-07 upper ball joints and 88-98 lower ball joints. So much for easy part finding, bring old parts along to O Reilly’s



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