I need to know the tightening sequence for my cylinder head bolts?

2009 GMC SIERRA
200,000 MILES • 4.3L • V6 • 2WD • AUTOMATIC
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SAMPLES98
  • MEMBER
  • 1 POST
I can’t find the tightening sequence for my specific make and model anywhere online. My engine has 13 bolts per head.
Feb 13, 2026 at 9:47 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,367 POSTS
Let me know if you can't read the numbers in the fourth image. You can copy and paste it into a typing program such as MS Word, where it can be expanded, or I can put some larger callouts on it for you.

The special tool they're referring to is: J 45059 - Angle Meter. You may be able to borrow a comparable tool from an auto parts store that rents or borrows tools. Let me know if you don't know what they're referring to for the procedure.
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Feb 13, 2026 at 11:20 AM
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