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02 Tahoe throwing codes

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Old August 9th, 2009, 3:43 PM
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Default 02 Tahoe throwing codes
2002 Tahoe Z71 flex, changed failed fuel pump assembly last week and went on a highway trip, of about 300 miles and oil light came on. Checked oil and needed to add about 4 qts. No leaks, so i checked pvc and it was plugged. Changed pvc and drove back and oil level seems to be ok. But this is where it starts to throw a bunch of codes and is running rough.

P0178: Fuel Composition circuit low input
P0207: cly 7 injector
P0226 Throttle PetalSensor/ Switch problem
P0301 #1 misfire
P0302 #3 misfire

Trying to determine common denominator...any suggestions welcome.
Last edited by joatman; August 10th, 2009 at 8:09 AM. Reason: clarify fuel pump assembly changed
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Old August 9th, 2009, 10:19 PM
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Did you have the fuel filter changed when the pump was changed?
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Old August 9th, 2009, 10:38 PM
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Default fuel filter
No, but it was changed within the last year.
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Old August 12th, 2009, 8:45 AM
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Update, cleaned Throttle body and used injector cleaner in gas, after another highway trip the only code left is p0178, but running great.
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