2003 Corvette: Service Bulletin: Info - Recommended Wheel Nut/Bolt Torque Specifications

Subject: Info - Recommended Wheel Nut/Bolt Torque Specifications
Model and Year:
Table 1: 2003 Passenger Cars Table 2: 2003 Light Duty Trucks
Source: Chevrolet Service Bulletin
Bulletin Number: 02-03-10-008 - (12/17/2002)

This bulletin is being issued to list the recommended wheel nut/bolt torque specifications for passenger cars and light duty trucks for the 2003 model year.

2003 Passenger Cars

Vehicle	Fasteners		Bolt Circle Diameter (mm)	Lugwrench Hex Size	Service Torque
Number	Size	N·m	lb ft
J	5	M12 x 1.5	100	19 mm	140	100
B, C, D, G, H, K, N, U Van, W	5	M12 x 1.5	115	19 mm	140	100
Corvette	5	M12 x 1.5	120.65	19 mm	140	100
Pontiac Vibe	5	M12 x 1.5	100	21 mm	103	76

2003 Light Duty Trucks

Vehicle and Application	Fasteners		Bolt Circle Diameter (mm)	Lugwrench Hex Size	Service Torque
Number	Size	N·m	lb ft
S/T (All)	5	M12 x 1.5	120.65	19 mm	140	100
GMT360/370 (All)	6	M12 x 1.5	127	19 mm	140	100
M/L (All)	6	M14 x 1.5	139.7	22 mm	190	140
G/H10 (All)	6	M14 x 1.5	139.7	22 mm	190	140
G20, 30 (All)	8	M14 x 1.5	165.1	22 mm	190	140
C/K 15 (All Except 1500HD)	6	M14 x 1.5	139.7	22 mm	190	140
C/K 1500HD, 25, 35 & 36 (Including Dual Wheels)	8	M14 x 1.5	165.1	22 mm	190	140
HUMMER H1	8	9/16-18	165.1	7/8 in	190	140
HUMMER H2	8	M14 x 1.5	165.1	22 mm	190	140
Tracker (All)	5	M12 x 1.25	139.7	19 mm	95	69
* -- Dual wheel trucks - torque specifications apply to front and rear wheels.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those 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 a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.