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I have a po452 code and I've changed the sensor, gas cap,
I have a po452 code and I've changed the sensor, gas cap, upper filler neck, canister vent, and the perge solenoid. I double checked the wiring on the sensor and it's ok but I'm still getting the same… read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
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Have 98 Chevy Suburban, 5.7L, 1500 4 wheel drive, was
Have 98 Chevy Suburban, 5.7L, 1500***** was running rough so changed spark plugs, new wires, new egr valve. Ran fine for a few days then it started skipping. Turn it off restart and sometimes it's fin… read more
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1999 chevy 5.7 vortec. I'm getting a po171 code from my
1999 chevy 5.7 vortec. I'm getting a po171 code from my reader. The truck runs good at times but out of no where it will start looping and/or surging. … read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
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I have a 2005 Chevy Avalanche, Keep getting 0171 and 0174
PO171 and PO174 - Both sides running Lean, I also get random misfires and now I am also getting Throttle position sensor codes that "reduce Engine Power" replaced that sensor 2 years ago and it's been fine until now. I have replaced the entire exhaust, O2 sensors, Map and MAF sensors. replaced the intake manifold gaskets. Checked all lines for vacuum leaks and could not find any. I replaced the PCM lastnight and I am still getting the same issues … read more
Gary
Gary
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Vocational, Technical or Trade Scho
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Getting the p0305 code and can't make it go away. Sorry. I
Sorry. I can't get rid of the problem. I have reset it around 30 times now. History. truck was running great until both heads cracked. I was not driving it at the time so I do not know details of that. I replaced the heads. After reassembly I was getting a crank sensor error. Timing appeared to be advanced around 12 degrees. I adjusted the distributor and moved it one tooth in both directions and the timing would not change. I replaced the crank sensor and that error went away and the P0305 code came up. I have replaced the spark plugs, spark plug wires, complete distributor assembly, and all 4 O2 sensors. Oh yeah, the timing is still firing at the same point as before. Thoughts? … read more
Gary
Gary
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Vocational, Technical or Trade Scho
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I'm ***** *****. I have a 99 GMC throwing a P1345 and an
Customer: I'm ***** *****. I have a 99 GMC throwing a P1345 and an evap code. I figure the evap code is probably the gas cap that is most likely the wrong one for the truck. But the timing code has me… read more
Gary
Gary
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Chevrolet Silverado 2500: 01 chevy 2500hd 6.0 finished plowing
01 chevy 2500hd 6.0 finished plowing and went up the hill slow down to turn and the truck started skipping and no power pulled the codes po171 po174 po300 smoked engine found intake leak fix that prob… read more
Gary
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cam/crank code, have changed both sensors and light is still
cam/crank code, have changed both sensors and light is still on - 1999 chevy 1500 - 5.7 vortec… read more
Tim's Auto Repair
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2003 Tahoe: warmed..the spark plugs (ac plugs..fuel filter..maf
2003 Tahoe 5.3 flex fuel with 146,000 miles on it. At times in the morning during a cold start the engine will idle rough until it is warmed up and then run smooth. I replaced the spark plugs (ac plug… read more
Pete
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p300: Avalanche..100k miles has code po171, po174..fuel filter..stalls
'02 Avalanche w/little over 100k miles has code PO171, PO174, and PO300. Started with fuel filter as i had experienced that problem previously. Idle improved but engine falls flat when you punch it an… read more
GM Tech (Cam)
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Vocational, Technical or Trade Scho
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2007 chevy: four wheel drive..traction control..check engine light
ok ive got two questions on same vehicle, 2007 chevy half ton p/u , with 34000 miles, automatic with four wheel drive, 5.3 engine. 1st question, why is my service stabilitrac and service traction cont… read more
Ted G.
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99 Suburban: 000 miles..5.7 engine..intake gaskets due to coolant leak
99 Suburban with 99,000 miles. Has a 5.7 engine. I just replaced the intake gaskets due to coolant leak. I've done several of these intake gasket jobs and the trucks always start right up with no prob… read more
GM Tech (Cam)
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Vocational, Technical or Trade Scho
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200 GMC: the fuel pump drove vehicle for a week..low voltage
I have a 200 GMC jimmy 4.3L. to make a long story short I replaced the fuel pump drove vehicle for a week then had the battery go out (low voltage yet started). At that time I started getting instrume… read more
Ted G.
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98 Chevy: Cab pickup with a 305 vortec engine..runs fine..pulling
I have a 98 Chevy Silverado Ext. Cab pickup with a 305 vortec engine. It has 166,000 miles and runs fine unless you are pulling a load. At such time, if I accelerate under a load and hold steady on th… read more
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1998 Chevy: 1500 with a 5.7..misfire code..cap..cant find..problem.
I have a 1998 Chevy K-1500 with a 5.7 and auto trans.The last few years i have been setting a engine misfire code mostly when i try to pull my rv. I have changed the plugs,wires,cap,bug,and recently h… read more
Sam C
Sam C
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Almost a liberal arts!
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1998 chevy blazer: a hill, the engine light comes..Misfire..map sensor
my 1998 chevy blazer "dies" whenever i go up a hill, the engine light comes on and the code is usually "general Misfire", my mechanic has changed all filter, plugs, wires, map sensor, fuel pipe, fixed… read more
Carhelp4u
Carhelp4u
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96 chevy: rough idle..map sensor..fuel pressure regulator..voltage
96 chevy k1500 rough idle after start up ses light on, now truck wont start. Have replaced map sensor,fuel pump, fuel pressure regulator, intake gaskets. found code's po300 random misfire, po108 map v… read more
PARTSPRO4779
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2001 Chevy: 6.0 has trouble idleing..cold weather..lean..misfire code
2001 Chevy 2500hd 6.0 has trouble idleing in cold weather until it's warm then it's fine.Show lean code in bank 1 and 2. Also misfire code… read more
Virtual Wrench
Virtual Wrench
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Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

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GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

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Tim's Auto Repair

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Dave Nova

Dave Nova

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ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

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Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

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Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Jerry Newton

Jerry Newton

Chevy Technician

2,804 satisfied customers

ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

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