TrailBlazer 2WD L6-4.2L VIN S (2003)
20. Remove the J 44221.
21. The dark lines (1) on the chain should be aligned with the marks on the sprockets as shown.
22. Install the top chain guide.
23. Add Threadlock GM P/N 12345496 on the top chain guide bolt threads.
24. Install the top chain guide bolts.
Tighten the top chain guide bolts to 10 Nm (89 ft. lbs.).
25. Install the engine front cover.
26. Install the camshaft cover.
