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Engine shut down and won't turn over. Had a po521 code. I
Engine shut down and won't turn over. Had a po521 code. I towed it home dumped the oil and it was very low. Looks like it blocked near the oil pump and filter. I've drained and refilled. Charged batte… read more
Ron
Ron
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Vocational, Technical or Trade Scho
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Had misfire code on cylinder 5, changed coil now it starts
Had misfire code on cylinder 5, changed coil now it starts fine for 30 seconds and then rpms drop almost dies. … read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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Engine light flashing with engine running rough and now it
engine light flashing with engine running rough and now it wont start … read more
Gary
Gary
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Vocational, Technical or Trade Scho
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Check JA: Sometimes things that you think will be really
Check engine started flashing on my 2009 GMC Sierra 5.3 … read more
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I have. 2000 GMC Sierra z71 Having trouble getting it to run
I have. 2000 GMC Sierra z71 Having trouble getting it to run Starts and stays on while idling but dies out when I Give it gas I replaced the fuel pump and filter Already… read more
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I have a 2008 GMC Sierra 2500hd, and I have been having
Hello There! I have a 2008 GMC Sierra 2500hd, and I have been having problems with a random misfire I ran the scanner and all I have is P0300 and I noticed that if I disconnect the Barometer air press… read more
BOBBYSS
BOBBYSS
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2003 GMC Yukon 5.3L sudden misfire, engine stutter, will not
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Dan
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GMC Envoy SLT: Check engine light blinks. stops when I let
Check engine light blinks. stops when I let up off the gas. brand new muffler and convertor.… read more
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GMC Yukon SLE: hello i have a 1996 gmc yukon. I was having
hello i have a 1996 gmc yukon. I was having rough idle and random misfires, I replaced the intake gasket and replaced the spider injectors with the mpi upgrade, I also replaced the maf sensor and map … read more
Virtual Wrench
Virtual Wrench
Owner of LJ Auto Repair 37 years
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GMC Sonoma 4x2: GMC SONOMA 2WD 4.3L p300 Random misfire. Replaced
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Gary
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Hello Cam. I have a 2000 Escalade with a random misfire code.
Hello Cam. I have a 2000 Escalade with a random misfire code. no obvious vacuum leaks etc. Is there a common issue that causes this around 120k? the plugs look fair and I will replace them and the wir… read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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gmc sierra 1500: I have a 99 GMC Sierra 1500 with a V6 and
I have a 99 GMC Sierra 1500 with a V6 and a standard transmission, 290,000 km on the engine. The truck is seriously hesitating and "lurching" when I am driving. It is particularly noticable at 2000 rp… read more
Gm Tech (Cam)
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GM k1500: 1998 GMC k1500 comoing back from a long journey engine
1998 GMC k1500 comoing back from a long journey engine light came on started flashing then went solid drove truck home seemed to burn a lot more fuel when i arrived home checked plugs, wires, distribu… read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
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gmc sonoma: Ive got a 99 gmc sonoma it gets terrible gas milage,i
I've got a 99 gmc sonoma it gets terrible gas milage,i can smell unburned gas when its idling,and yes i've replaced the fuel pump,and given it a tune up.it also is very stubborn to start. can someone … read more
Randall C
Randall C
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GMC Sonoma Pickup: I have a 00 GMC Sonoma with a 4.3 L v-6
I have a 00 GMC Sonoma with a 4.3 L v-6 that is reading random Misfire. It only stutters in first 15 min and when the air is damp Or just rained. If it is real dry outside it has no problems at all. I… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
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P0300 code. Replaced module, cap, rotor, plugs and wires as
P0300 code. Replaced module, cap, rotor, plugs and wires as well as coil and map sensor. NO vacuum leaks either. Checked and cleaned EGR and tested crank sensor. Problem still present. All wiring conn… read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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GMC Sierra: service soon light is flashing. engine running
service soon light is flashing. engine running rough idle. just changed o2 sensor driver side. 2005 sierra 2500 hd with 6L gasoline.… read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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i have a 96 gmc truck 5.7 engine, it gives me p300 misfire
i have a 96 gmc truck 5.7 engine, it gives me p300 misfire code. i have changed cap, rotor, camposition sensor, plugs, wires number four ingector. i have a scan tool and can see the misfire on the num… read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
High School or GED
14,660 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,823 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,589 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

675 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

285 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

230 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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