1500 heavy half 14 bolt Qs:

[xXDatJustHappenedXx]

Unfortunately 8 lug

 

[TSALI137]

I read through this and I know it's an old post but maybe this will help someone else. Yes they can have LSD'S in the K2500/K1500 9.5 14bolts, and just to clarify yes it's the wider 4x4 axle. I'm installing one from a 1998 k2500 that had an OEM LSD instead of the Govlock posi. Also be aware that it's not just a simple 8 lug shaft to 6lug shaft and a new drum hub swap conversion. You WILL HAVE TO CHANGE EVERYTHING! 8 lug 9.5 14bolts have 13in brakes and drums. You have to change the backing plate as well as all the brake hardware and drums to 11.15x2.75 brakes. These are the parts you will need:

Yukon Gear & Axle (YA G15521928) 6-Lug Rear Axle for GM 9.5 Differential.

Dorman HW2324 Rear Drum Brake Hardware Kit w/Self Adjusters; 11.15 In. x 2.75 In. Brakes. OEM parts numbers 2324K; H2324.

ACDelco Gold 17473R Riveted Rear Drum Brake Shoe Set w/6lug wheels.

ACDelco Professional 18E292 Rear Drum Brake Wheel Cylinder w/7200lb GVW or 1500 with 11-5/32in Brakes.

Dorman 924-658 Rear Brake Dust Shield - 1 Pair. Quantity: 1; 11.15In. x 2.75 In. Brakes; Includes Both Sides; wo/Wheel Cylinder OEM numbers 15650129; 15650130.

Raybestos 2169R Professional Grade Brake Drum w/ 6 Lug Wheels 11 5/32" X 2 3/4" Brake Shoe.

ACDelco Professional 18E292 Rear Drum Brake Wheel Cylinder w/ 11 5/32" X 2 3/4" Brake Shoe, W/ 6 lug wheels or 7200lb GVW.

CTB95R42 1995-1998 Chevrolet/GMC Pickup Truck 3/4 Ton 4wd Factory Rear Axle Lines 2pc.OE Steel for Factory Brakes Only. Factory preformed Brake Line Set.
Dorman 919-225 Stainless Steel Brake Line Kit Compatible with Select Chevrolet / GMC Models (OE FIX) FITS 1997 CHEVY K1500 EXTENDED CAB 6.5' BED 141.5WB

*****ALSO BE PREPARED TO NOT HAVE AN EMERGENCY PARKING BRAKE! The powers to be, aka idiots at GM discontinued the 1500 6lug or 7200lb 6lug 2500 parking brake strut , lever and washer, OEM parts numbers 15704004, 15704003, 15154260, 15154259, and 5454797. They discontinued them here in the U.S. in 2010 and Canada in 2009.

The following is for a 97/98 to 2013 9.5 14bolt complete rebuild after purchasing everything listed above for 6lug conversion and with 3.73gears. I have also included some older axle parts numbers too.

Yukon (YG GM9.5-373) High Performance Ring and Pinion Gear Set for GM 9.5" Differential

Yukon Gear & Axle (YSPPN-033) Pinion Nut Washer for GM 7.2″ IFS, 7.5″, 7.625″, 7.6″ IFS, 8.5″, 8.6″ & 9.5″

Yukon Gear & Axle (YSPPN-018) Pinion Nut For GM 7.2" Ifs, 7.5", 7.6", 7.6" Ifs, 8.0", 8.25", 8.5", 8.6", 9.25" Ifs, 9.5" & Oldsmobile Dropouts. 1 1/4" Socket, 7/8" X 14 Thread.

Yukon Gear & Axle (YY STR-007) U-Joint Strap for GM 14-Bolt Truck Differential.. You will need to order 2 or use the OEM AC Delco kit that includes the bolts.
AC Delco Universal Joint Strap Kit 45U0508 1975 - 2010 Chevy GMC Truck.

Yukon Gear & Axle (YSPCC-008) C-Clip for GM 9.5 Differential.

Yukon Gear & Axle (YY GM15579602) Yoke for GM 9.5 Differential with a 1350 U/joint size. 3.625" snap ring span, 1.188" cap diameter.

FEL-PRO RDS 55387 Axle Hsg. Cover or Diff. Seal.

GM Genuine Parts 12471479 Rear Axle Housing Drain Plug, Black.

Yukon Gear & Axle (YP C5-GM9.5) Steel Cover for GM 9.5 Differential.
You will need a m20x1. 5 drain plug such as Mishimoto MMODP Magnetic Oil Drain Plug M20 x 1.5, Black.

Eaton eat914a538 9.5 in. detroit truetrac with 33 spline for gm.

Yukon Gear & Axle (SK SSGM9.5) Super Carrier Shim Kit for 9.5 Differential.

Yukon Gear & Axle (YK GM9.5-B) Master Overhaul Kit for GM 9.5 Semi-Float Differential with Triple Lip Seal.
79-97 9.5 you will need (YK GM9.5-A).

National R-1561-TV Wheel Bearing, 2ea.

National 710105 Wheel Seal, 2ea.

Dorman 610-325 Rear M14-1.50 Serrated Wheel Stud - 15.88mm Knurl, 49mm Length for Select Chevrolet/GMC Models - 12ea.

Set of 24, 14mmx1.5 OEM Factory Wheel Lug Nuts Replacement for Sliverado Sierra 1500 Yukon Avalanche Suburban Express 1500 C1500 K1500 Escalade Traverse Yukon M14x1.5 Studs 6 Lug Wheel.

ATS SPRINGS BT8-227CKChevy Leaf Spring Upper and Lower Saddle & Ubolt Kit - 5/8" x 12-1/2"
ATS SPRINGS BT-DN5/8Leaf Spring U-Bolt Deep Nut Kit 5/8"-18, Grade 8.

Make your own dummy pinion set up bearings:
ACDelco Gold / Timken HM88649 Pinion Bearing Tapered Roller Bearing outer pinion.
Timken Tapered Roller Bearing Cone - HM804846, inner pinion bearings.

I know this is long, but hopefully it will help someone else in the future.

 

[someotherguy]

I read through this and I know it's an old post but maybe this will help someone else. Yes they can have LSD'S in the K2500/K1500 9.5 14bolts, and just to clarify yes it's the wider 4x4 axle. I'm installing one from a 1998 k2500 that had an OEM LSD instead of the Govlock posi.

Interesting. Supporting info for this claim?

Richard

 

[TylerZ281500]

Interesting. Supporting info for this claim?

Richard

heavily doubt the statement. GM probably wouldn't be sourcing extra carriers for very specific trucks and then not carry that over elsewhere. but I've also seen weirder

 

[df2x4]

I don't doubt the possibility that an axle pulled from a donor truck had some sort of posi/LSD carrier installed, but I do seriously doubt that it was GM who installed that carrier.

 

[shovelbill]

I don't doubt the possibility that an axle pulled from a donor truck had some sort of posi/LSD carrier installed, but I do seriously doubt that it was GM who installed that carrier.

Dealer installed?

 

[df2x4]

Dealer installed?

I was thinking more along the lines of a previous owner doing the install, but I suppose that's possible too.

 

[GoToGuy]

Without knowing what it came out of and the RPO code, it wasn't late model as GM only does the gov lok now.

 

[Schurkey]

Yes they can have LSD'S in the K2500/K1500 9.5 14bolts, and just to clarify yes it's the wider 4x4 axle. I'm installing one from a 1998 k2500 that had an OEM LSD instead of the Govlock posi.

If GM installed some other differential, there'd be repair info in the service manual.

My '88 and '97 service manuals have info on "open" and "Gov-Lock" differentials.

I'm thinking that someone else put the limited-slip differential into that axle.

 

[someotherguy]

If GM installed some other differential, there'd be repair info in the service manual.

My '88 and '97 service manuals have info on "open" and "Gov-Lock" differentials.

I'm thinking that someone else put the limited-slip differential into that axle.

Yeah, my tone was one of disbelief but I know it doesn't translate well in text.

Calling the Gov-Loc a posi is also a big red flag to me. It's a locker.

TSALI137 laid out a bunch of info and I'm not dissing the guy, but I suspect he's wrong about anything coming stock in a GMT400 differential other than open, or Gov-Loc.

By the way in Texas, not having a parking brake will fail you on the state inspection.

Richard