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Courtesy of GENERAL MOTORS CORP. 7. Install the J 44221 to the rear of the camshafts. See Special Tools. Fig. 156: Releasing Timing Chain Tension 8. Release the tension on the timing chain by moving the tensioner shoe in. CAUTION: Refer to Camshaft Holding Tool Caution .
2007 Hummer H3 2007 ENGINE Engine Mechanical - 3.7L - H3
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