TrailBlazer 4WD L6-4.2L VIN S (2002)
6. Install the top chain guide.
7. Add threadlocker to the top chain guide bolt threads. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.
8. Install the top chain guide bolts. Tighten the top chain guide bolts to 10 Nm (89 lb in).
9. Install the camshaft cover. Refer to Camshaft Cover Replacement.