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2005 GMC Sierra 2500 HD SLE 6.6L Excessive Emissions, Poor Idle Quality, Hesitation VIN: 1GTHK23255
Thanks to all who replied. Brad was right about the egr solenoid. Two others suggested the plunger as the EGR was reading both open and closed codes. That was my thoughts too The back pressure in the exhaust was less than two pounds The egr cooler wasn't ... Trouble codes: P0101, PP040, PP140.
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