SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1041 (ENGINE MECHANICAL - 6.6L (LB7) (INTRODUCTION))SPECIFICATIONSTHREAD REPAIR SPECIFICATIONSCYLINDER HEAD - TOP VIEW
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Cylinder Head - Top View

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Cylinder Head - Top View
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Cylinder Head - Top
GM734572Courtesy of GENERAL MOTORS CORP.
Cylinder Head - Top View

Service Hole Location Thread Size Drill Counterbore Tool Stop Collar Tap Driver Insert Drill Depth (Max) Tap Depth (Min)
mm (in) mm (in) - - - - - - - -
1 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
2 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
3 M 10 x 1.5 not serviced 26 1.02 21 0.827
4 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
5 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
6 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
7 M 10 x 1.5 not serviced 26 1.02 21 0.827
8 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
9 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
10 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
11 M 8 x 1.25 206 207 N/A 208 209 210 21 0.83 17 0.669
12 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
13 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
14 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
15 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
16 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
17 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
18 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
19 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
20 M 10 x 1.5 211 212 N/A 213 214 215 26 1.02 21 0.827
21 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
22 M 6 x 1.0 201 202 N/A 203 204 205 17 0.67 13 0.512
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.