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12-04-2010
"One final work, while the 3.4L is not designed as an interference engine, it has happened that when the timing belt breaks or slips, the pistons can hit the valves. ther is only .010" designed clearance between the valve at full lift and the piston at top dead center. That is how my GP was when I got it. 6 bent valves, timing belt broken." Quote from the article THE 3.4 DOHC 24 VALVE
Ao if it happened during low RPM normal driving Id say you're fine
http://www.streetfire.net/video/2001...ynp_208097.htm
12-04-2010
According to this link ,, it looks like I may be ok
GM Timing Belt & Timing Chain Replacement
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