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P0171 and p0174 2001 gmc 4.8L runs and starts fine fuel pump
P0171 and p0174 2001 gmc 4.8L runs and starts fine fuel pump pressure54 ignition on engine off. Tried propane and smoke tests found nothing. 315000 mis … read more
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I got 99 camaro 3.8 v6 and throwing a po174,i replace my
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Chevrolet: 2004 chevy 1500 350 engine 166'000 miles. I get
2004 chevy 1500 350 engine 166'000 miles. I get codes PO171 and PO174 The fuel pump was replaced about 5000 miles ago, the air cleaner is new. where do I go from here… read more
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2000 Silverado 5.3 do I have to remove the valve covers to
2000 Silverado 5.3 do I have to remove the valve covers to do intake manifold gaskets. Getting lean codes for both banks and it idles a little rough?… read more
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2007 GMC: 000 miles..injectors..msd coil packs..exhaust..aftermarket
I have a 2007 GMC new body style with 30,000 miles on it. Its a 4.8 with 48 lbs injectors,msd coil packs,headers,and full gibson exhaust. Got an aftermarket high flow fuel pump brand new its the secon… read more
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2003 Chevy Silverado 1500: 4x4..rev..an O2 sensor (2-2..passenger side
The yellow engine block light comes on in my 2003 Chevy Silverado 1500 4.8liter 4x4. Scanner reading yield PO171 and PO174 or too lean banks 1 & 2.The truck will rev to 2,200rpm on the cold (zero degr… read more
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2005 Chevy Express 1500: 000 miles..check engine light..fuel pressure
I have a 2005 Chevy Express 1500 5.3 I have 164,000 miles on it. My check engine light is on codes read PO53, PO174, PO171. I changed my oxygen sensors, just did my intake manifold gaskets, new fuel p… read more
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2005 Chevy: v8..My check engine light came on the codes..PO171
I have a 2005 Chevy Express Van 1500 5.3 v8. My check engine light came on the codes are P053 PO171 PO174. I checked all my fuses and replaced all my sensors. What is the problem? Optional Information… read more
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2005 Chevy: v8..My check engine light came..sensors
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97 Grand Prix: po171..o2 sensor..rough when accelerating
97 Grand Prix GTP Got po131 ans po171 a week ago. Replaced the upstream o2 sensor. Next day, car began to run just as before the o2 sensor replacement: rough when accelerating. Car seems to be ok unti… read more
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chevy taho: 45k..air flow sensor reset it was ok..light came back
03 chevy taho 45k miles 5.3 auto has code po101 replaced the air flow sensor reset it was ok for two days the light came back on codes po171&po174 cleared them then the po101 came back any help would … read more
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2003 GMC: rough..engine light came..multiple cylinders misfires..O2
I have a 2003 GMC Sierra 4x4 pickup truck (5.3L) It started idleing rough and then the ck engine light came on. It said there were multiple cylinders misfires and that Sensor 1 Bank 1 O2 Fuel sensor i… read more
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2002 chevy suburban: a check engine light on..rough..run fine..warmed
I have a 2002 chevy suburban with a check engine light on. I pulled the codes and they are PO300, PO171, and PO174. The engine runs very rough in the morning when the engine is cold and seems to run f… read more
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P300: 2003 silverado codes po171,po174..slip..cruise
2003 silverado codes po171,po174,po300 and transmission seems to slip at cruise speed.do these codes also affect transmission? and what is most common fix for these codes.… read more
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Chevy: express van..3500 6.0 eng check eng light is on and it
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2001 chevy blazer: engine light..filters o2 sensors..complete exaust
I have a 2001 chevy blazer. It keeps setting engine light off with code po171 ,po174, po300. I have new wires plugs filters o2 sensors as well as complete exaust but light still is coming on. What can… read more
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i have a gmc sierra 2002 and trouble codes po171, and po174 ...
i have a gmc sierra 2002 and trouble codes po171, and po174 is coming up .. we have replaced the catalyic converter .. we want to know what we could check next ?… read more
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