background image

 

 

12 

 
6)

 

  Insert  nut  brackets  (176137)  inside  the 

crossmember  as  shown  in  illustration  16.    Align  nut 
brackets  over  the  drilled  holes  for  2WD  vehicles  and 
over the existing holes for 4WD vehicles. 
 
7)

 

 Apply thread lock and insert a 1.00” bolt with 

washer  (from  kit  860474)  through  the  slotted  hole  in 
bracket  176138.    Loosely  attach  bracket  to 
crossmember  by  threading  the  bolt  into  the  nut 
bracket.  Repeat for other side. 
 
8)

 

  Attach  the  aft  braces  to  the  installed  brackets 

with  the  hardware  from  kit  860474.    See  illustration 
16. 
 
9)

 

 Tighten the aft brace mounting bolts to 80 FT-

LBS then the bracket to crossmember bolts to 65 FT-
LBS. 
 
10)

 

 If applicable, cut the corner of the skid plate to 

avoid contact with the aft brace bracket.  Reinstall the 
transfer case skid plate. 
 
11)

 

  Install  front  wheels  and  lower  vehicle  to 

ground.  Tighten the lug nuts to 140 ft. lbs. 
 
12)

 

  Tighten  the  lower  control  arm  pivot  bolts  to 

107 ft. lbs.  Tighten the sway bar end link bolts to 22 
ft. lbs. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

REAR SUSPENSION 

 

A

DD

-A-L

EAF 

&

 

R

ISER 

B

LOCK 

I

NSTALLATION

 

 
1)

 

  Chock  front  wheels.    Raise  the  rear  of  the 

vehicle  and  support  the  frame  with  jack  stands.  
Remove the rear wheels. 
 

2)

 

  Support  the  rear  axle  assembly  with  a  floor 

jack.    Remove  both  rear  shock  absorbers.    Do  not 
reuse OEM shock absorbers. 
 
3)

 

 With the axle still being supported, remove the 

anchor plate, U-bolts, and spacer.  See illustration 17. 
 
4)

 

  Carefully  lower  the  rear  axle  and  remove  the 

original riser block.  Do not allow the axle to hang by 
any hoses or cables. 
 

 

Illus. 17 

 
5)

 

  Clamp  the  spring  assembly  securely  together 

with two C-clamps as shown in illustration 18. 
 

 

Illus. 18 

 
6)

 

 Loosen the nut and remove the center bolt.  If 

necessary,  hold  the  head  of  the  center  bolt  with 
locking pliers.  Do not remove the spring clips. 
7)

 

  Carefully  remove  the  C-clamps  and  set  the 

helper spring aside. 
 
8)

 

 Apply a small amount of grease to the top ends 

of Rancho Add-A-Leaf RS331. 
 
9)

 

  Place  the  Add-A-Leaf  under  the  spring  pack 

and  reinstall  the  helper  spring.    Temporarily,  secure 
the  assembly  together  with  a  3/8"  x  7.5"  bolt  and  nut 

Summary of Contents for RS6583B

Page 1: ...88583 Rev E Suspension System RS6583B 2013 2007 Chevrolet Silverado GMC Sierra 1500 88583 Rev E...

Page 2: ...Each hardware kit in this system contains fasteners of high strength and specific size Do not mix hardware kits or substitute a fastener of lesser strength See bolt identification table on page 2 G Co...

Page 3: ...D vehicle omit steps pertaining to the front axle assembly Also follow the specific 2WD steps for aft brace installation R Important information for the end user is contained in the consumer installer...

Page 4: ...4 RS6583B Suspension System...

Page 5: ...140 HHCS 2 M16 2 0 x 120 HHCS 2 M16 2 0 Stover Nut 4 M16 Washer 8 860547 Sway Bar Hardware Kit 1 M10 1 50 x 30 HHCS 4 P N DESCRIPTION QTY M10 1 50 x 60 HHCS 4 M10 1 50 x Nyloc Nut 4 M10 Washer 12 Loop...

Page 6: ...at the frame rail See illustration 2 Illus 2 NOTE For vehicles equipped with Electronic Suspension Control Autoride separate brake hose from sensor link bracket 2 Remove the brake caliper anchor bolts...

Page 7: ...metal 3 Reference mark the front drive shaft U joint to the differential yoke Remove the bolts and retainers from the yoke and slide the shaft rearward to disengage Tape the bearing cap assemblies and...

Page 8: ...t U joint to the differential yoke Tighten bolts to 22 ft lbs SUBFRAME INSTALLATION 1 Using a round file enlarge the inside corners of both lower control arm front brackets See illustration 7 Illus 7...

Page 9: ...lign flange marks and place the half shaft flange against the spacer Apply thread lock to bolts and attach the half shaft to the differential with the hardware from kit 860176 See illustration 10 Tigh...

Page 10: ...y bar to the lower control arms with the original end link assemblies BRAKE HOSE INSTALLATION 1 Install the brake rotor Apply thread lock and attach the caliper to the knuckle with the original mounti...

Page 11: ...3 Loosely attach the aft braces to subframe 176385B with the hardware from kit 860474 See illustration 16 NOTE Both aft braces should angle slightly outward from front to rear 4 If applicable remove...

Page 12: ...ighten the sway bar end link bolts to 22 ft lbs REAR SUSPENSION ADD A LEAF RISER BLOCK INSTALLATION 1 Chock front wheels Raise the rear of the vehicle and support the frame with jack stands Remove the...

Page 13: ...hole in the axle pad Place the new riser block 15080 on the axle pad with the taller end of the block in the rear and the top hole offset to the front See illustration 21 Illus 21 NOTE Ignore the up...

Page 14: ...1 and 2 for the other side 4 Install rear wheels and lower vehicle to ground Tighten lug nuts to 140 ft lbs BRAKE LINE BRACKET INSTALLATION 1 Attach the new brake line bracket 170014 to the rear diffe...

Page 15: ...r slip yoke insertion The slip yoke should be inserted a minimum of one inch into the transfer case and or transmission 3 Ensure that the vehicle brake system operates correctly If new brake hoses wer...

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