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Open Roads Forum  >  Tow Vehicles  > 99 Suburban Rear End This Topic Is Closed  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  bigjimb1 • View posts Colorado Springs, CO, USA New Member Joined: 08/10/2003 View Profile Posted: 08/12/03 09:28am Link  |  Print  |  Notify Moderator Have a 99 Suburban, 3.73 rear end, 5.7L gas engine. Done a little internet searching, but can't find out if there is an RPO code or how I determine if I have the 8.5" or 9.5" - Is there a code which will tell me this? Bigdog • View posts silverdale wa. Senior Member Joined: 06/28/2002 View Profile Good Sam RV Club Offline Posted: 08/12/03 10:44am Link  |  Print  |  Notify Moderator Take your serial number and go to your local dealer and they can get the equipment list for your vehicle. That tells you everything that was installed on it AT MANUFACTURE time...... GO COUGARS 2001 Ford 7.3L PSD Excursion Ride Rite air bags AFE Stage 1 4"MBRP exh Hellwig rear sway bar DP Tuner 2005 Keystone COUGAR 304BHS Tekonsha Prodigy 1200 Equalizer hitch 2000 Thomas school bus (RETIRED !!! ) BenK • View posts SF BayArea Senior Member Joined: 04/18/2002 View Profile Posted: 08/12/03 10:57am Link  |  Print  |  Notify Moderator There aren't that many different diff pumpkin shapes for each manufacturer. Once you know what to look for, you can ID them just by looking at the pumpkin...generally speaking...as there's always exceptions to the rule... Here's two hot links to sites that has diff pumpkin profiles. Best is the K5 site. We usually refer to the diff by the number of bolts holding on the cover (there's some overlap...as some has two different with same number of bolts). Colorado K5 diff profile ID ...going private and membership only, so save the info to your disk. PowerTrax pumpkin gasket outline ...shows the bolt numbers and gasket profile. -Ben Picture of my rig 1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner... 1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad... 1998 Mazda B2500 (1/2 ton) pickup, 2nd owner... Praise Dyno Brake equiped and all have "nose bleed" braking! Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)... Sold the boat (looking for another): Trophy with twin 150's... 51 cylinders in household, what's yours?... Al in SoCal • View posts Hemet, CA Senior Member Joined: 06/25/2002 View Profile Offline Posted: 08/12/03 12:43pm Link  |  Print  |  Notify Moderator If you have a C/K1500, then it's a Corporate 10 bolt semi float 8.5" ring gear. If you have the C/K 2500, you have the 8 lug version of the Corporate 14 Bolt Semi-Float, 9.5" ring gear. By the way, I Have seen the Corporate 14 Bolt semi float 6 Lug version in certain Z-71 1/2 ton pickup's and the early 90's SS454 short bed pickup had a 5 lug version of this 14 bolt semi float axle. I just wished they would have put them in our 4X4 versions of the Suburban, seeing how we have the same GVWR (7200#) of a light duty 3/4 ton (C/K2500 - 6 lug version) pickup. It would save a lot of overheating pumpkins. Al in SoCal '04 Chevy Suburban C1500 w/ 5.3L, 3.73, P265/70R17 Bridgestone Dueller H/T tires pulling a Sandpiper by Forest River T23FBLT w/ slide out couch This Topic Is Closed  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Open Roads Forum  >  Tow Vehicles  > 99 Suburban Rear End

Search:   Advanced Search Search only in Tow Vehicles

Jump to Forum Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Technical Support  - Tech Issues Locations  - RV Parks, National Parks, Stat...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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