Question about 2001 GMC Safari

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My van wont do over 35 mph

It shifts gear fine, once get to speed. gas pedal easily bogs down the engine. when i try to accelerate i hear a low whine from the engine. it has a harp time going up hills in 1st gear. new fuel pump new filter under drivers side.

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Check cat.converter for blockage

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

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SOURCE: 1995 GMC Safari Loses Power when accelerating hard, rough idle

your egr valve might be faulty bring it in to the auto parts to have it check out what your looking for is the 32 code on the OBD II scanner.

Posted on Sep 04, 2009

tragedy lok
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SOURCE: I have a 1999 gmc yukon 5.7 litre v8 4wd with

check the mass air flow,and the tps sensor

Posted on Nov 17, 2009

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