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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1439 (ENGINE MECHANICAL - 5.3L (LM4))SPECIFICATIONSTHREAD REPAIR SPECIFICATIONSENGINE BLOCK - LEFT SIDE VIEW
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Engine Block - Left Side View

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Engine Block - Left Side View
WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Block Bolt Holes - Left Side View
GM1457205Courtesy of GENERAL MOTORS CORP.
Engine Block - Left Side View

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth - Maximum mm (in) Tap Depth - Maximum mm (in)
J 42385
1 M28 x 1.25 N/A N/A N/A N/A N/A N/A N/A
2 M8 x 1.25 210 206 207 208 209 28.5 (1.122) 23.0 (0.905)
3 M8 x 1.25 210 206 207 208 209 21.5 (0.846) 16.0 (0.629)
4 M10 x 1.25 215 211 212 213 214 29.0 (1.141) 23.0 (0.905)
5 M10 x 1.5 215 211 212 213 214 27.0 (1.062) 21.5 (0.846)
6 M16 x 1.5 N/A N/A N/A N/A N/A N/A N/A
7 M11 x 2.0 First
Design		 108 105 N/A 106 107 124.0 (4.88) 115.0 (4.52)
7 M11 x 2.0 Second
Design		 108 105 N/A 106 107 69.0 (2.72) 60.0 (2.36)
8 M11 x 2.0 108 105 N/A 106 107 69.0 (2.72) 60.0 (2.36)
  • Bolt holes 7, second design, and 8 have a 30 mm (1.18 in) counterbore included in the 69.0 mm (2.72 in) drill depth. Use sleeve J 42385-315 with the drill and tap.
  • Bolt holes 7, first design, have a 85 mm (3.34 in) counterbore included in the 124.0 mm (4.88 in) drill depth.
RENDER: 1.0x

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  • • You are missing required tools, torque specs, or safe lifting equipment.
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