" name=forward 	Document ID# 1666635 		

Subject:	Revised Wheel Alignment Specifications #05-03-07-006 - (05/31/2005)	

Models:	2005 Chevrolet Silverado	

	2005 GMC Sierra	

This bulletin is being issued to revise the Wheel Alignment Specifications in the Wheel Alignment sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
 Wheel Alignment Specifications  Truck Line	Model	Caster L-R		Cross Caster, L-R	Camber	Cross Camber, L-R	Toe	Steering Wheel Angle	
Important: Caster is relative to frame. The caster values must be compensated for the measured frame angle. Frame angle is positive when higher in the rear and negative when lower in the rear. Refer to Front Caster and Camber Adjustment. 									
C1500	Silverado, Sierra w/16" Tires Reg, Ext Cab or Crew Cab	3.75° ± 1.00°	4.00° ± 1.00°	- 0.25° ± 0.50°	+0.25° ± 0.50°	0.00° ± 0.50°	+0.10° ± 0.20°	- 1.0° ± 3.5°	
C/K 1500	Silverado, Sierra w/17" Tires Reg, Ext Cab or Crew Cab	3.85° ± 1.00°	4.00° ± 1.00°	- 0.15° ± 0.50°	+0.25° ± 0.50°	0.00° ± 0.50°	+0.10° ± 0.20°	- 1.0° ± 3.5°	
C1500HD	Silverado, Sierra w/16" Tires Crew Cab	4.50° ± 1.00°	4.75° ± 1.00°	-0.25° ± 0.50°	+0.25° ± 0.50°	0.00° ± 0.50°	+0.10° ± 0.20°	-1.0° ± 3.5°	
K1500	Silverado, Sierra w/16" Tires Reg, Ext Cab or Crew Cab	3.80° ± 1.00°	4.10° ± 1.00°	- 0.30° ± 0.50°	+0.25° ± 0.50°	0.00° ± 0.50°	+0.10° ± 0.20°	- 1.0° ± 3.5°	
K1500	Silverado, Sierra w/17" Tires Reg, Ext Cab or Crew Cab	3.60° ± 1.00°	4.30° ± 1.00°	-0.70° ± 0.50°	+0.25° ± 0.50°	0.00°± 0.50°	+0.10° ± 0.20°	- 1.0° ± 3.5°	
K1500	Sierra Denali w/20" Tires	3.50° ± 1.00°	4.50° ± 1.00°	-1.00° ± 0.50°	- 0.25° ± 0.50°	0.00° ± 0.50°	+0.10° ± 0.20°	- 1.0° ± 3.5°	
C1500/K 1500	Silverado/Silverado SS/Sierra, w/20" Tires	4.10° ± 1.00°	5.10° ± 1.00°	-1.00° ± 0.50°	-0.10° ± 0.50°	0.00° ± 0.50°	+0.10° ± 0.20°	- 1.0° ± 3.5°	
K1500HD	Silverado, Sierra Crew Cab	4.25° ± 1.00°	4.50° ± 1.00°	-0.25° ± 0.50°	+0.25° ± 0.50° 	0.00° ± 0.50° 	+0.10° ± 0.20°	- 1.0° ± 3.5°	
C2500LD	Silverado, Sierra  Reg or Ext Cab	4.50° ± 1.00°	4.75° ± 1.00°	-0.25° ± 0.50°	+0.25° ± 0.50°	0.00° ± 0.50° 	+0.10° ± 0.20°	- 1.0° ± 3.5°	
K2500LD	Silverado, Sierra  Reg, Ext Cab or Crew Cab	4.25° ± 1.00°	4.50° ± 1.00°	-0.25° ± 0.50°	+0.25° ± 0.50° 	0.00° ± 0.50°	+0.10° ± 0.20°	-1.0° ± 3.5°	
C2500HD	Silverado, Sierra Reg, Ext Cab or Crew Cab	4.25° ± 1.00°	4.50° ± 1.00°	-0.25° ± 0.50°	+0.25° ± 0.50° 	0.00° ± 0.50° 	+0.10° ± 0.20°	-1.0° ± 3.5°	
K2500HD	Silverado, Sierra Reg, Ext Cab or Crew Cab	4.25° ± 1.00°	4.50° ± 1.00°	-0.25° ± 0.50°	+0.25° ± 0.50° 	0.00° ± 0.50° 	+0.10° ± 0.20°	-1.0° ± 3.5°	
C3500/3600	Silverado, Sierra  Reg, Ext Cab or Crew Cab	4.25° ± 1.00°	4.50° ± 1.00°	-0.25° ± 0.50° 	+0.25° ± 0.50° 	0.00° ± 0.50° 	+0.10° ± 0.20° 	-1.0° ± 3.5° 	
K3500/3600	Silverado, Sierra w/Dually Reg, Ext Cab or Crew Cab	4.25° ± 1.00° 	4.50° ± 1.00° 	-0.25° ± 0.50° 	+0.25° ± 0.50° 	0.00° ± 0.50° 	+0.10° ± 0.20° 	-1.0° ± 3.5° 	
K3500/3600	Silverado, Sierra Non-Dually Reg, Ext Cab	4.50° ± 1.00° 	5.00° ± 1.00° 	-0.50° ± 0.50°	+0.25° ± 0.50° 	0.00° ± 0.50° 	+0.10° ± 0.20° 	-1.0° ± 3.5° 	
C/K 1500	Silverado, Sierra with Rear Wheel Steering -- Values are for the rear of the vehicle.	-- 	-- 	-- 	-0.50° ± 0.50° 	-- 	0.00° ± 0.20° 	-1.0° ± 3.5°  Thrust Angle 0.00° ± 0.15° 	

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. 		WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION 	
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