| Subject: | Recommended Wheel Nut/Bolt Torque Specifications | 
| Models: | 2003 Passenger Cars and Light Duty Trucks | 
| 2003 HUMMER H1, H2 | 
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.
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  | 
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.  | ||||||