Posted by 53dc on December 24, 2012 at 02:46:17 from (188.8.131.52):
Hey all, my '02 duramax has just over 315,000 miles and recently started acting strange. Just driving around it will be fine but if I need to jump on it a bit like getting on interstate or pulling something it won't continue to accelerate once it hits about 2100 rpms. It will hit that rpm range and just lay down and flatten out almost like it has hit a governor or something. If I back out of it a bit it will shift, rpms drop, and will accelerate again until it reaches 2100 again. I just replaced the air filter. Anyone ever had this? Any ideas? Thanks.
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