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I should preface my question with the fact that I know very
Hello. I should preface my question with the fact that I know very little about vehicles, so please forgive me in advance for my lack of knowledge or understanding. When I get into my 2003 GMC Envoy (… read more
MastertechRob
MastertechRob
Master level lead technician
230 satisfied customers
Does it have a carb or fuel inj. All is fine I'm working on
Does it have a carb or fuel inj JA: Have you noticed an increase in fuel consumption? And how does the GMC start—same as usual? Customer: All is fine I'm working on it need to know JA: What is t… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
21,409 satisfied customers
I need to know where the fuel injectors are located on my
Hello I need to know where the fuel injectors are located on my 2003 GMC envoy slt 4wd inline 6 engine … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
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Placed in park at store came out and everythinh locked. car
Placed in park at store came out and everythinh locked. car seems stuck in reverse. replaced battery but that not problem. … read more
Ricardo Hohl
Ricardo Hohl
Auto Motive Instructor
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The senser said it was coil and number 6 plug. I replaced them
the senser said it was coil and number 6 plug. I replaced them engine light went for a couple of days,now it has come back on. the tester says same thing number 6 plug and coil. any answer is apprecia… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
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2003 GMC Envoy SLT no fuel going thru lines rush judgement
2003 GMC Envoy SLT no fuel going thru lines rush judgement replaced pump now finds out no power at the fuel pump check fuses didn't see any blown what or where should I try next… read more
Dave Nova
Dave Nova
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Associate Degree
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I have a 2003 GMC Envoy I need a rradio codefor 2002 and boy
I have a 2003 GMC Envoy I need a rradio codefor 2002 and boy because I need to switch the radio out of the 2003 and put into 2002 radio in my GMC Envoy because it have a cold on the 2002 radio needed … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Envoy: I have a 2004 GMC Envoy with 4.2 L. inline 6 cyl.
I have a 2004 GMC Envoy with 4.2 L. inline 6 cyl. with spun bearings. Is there a better GM motor that will install without modifications that is compatible with the onboard computer? I have been told … read more
Eric
Eric
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N/A
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GM envoy: why does the low power light come on in my 2002 envoy
why does the low power light come on in my 2002 envoy with the straight 6 engine? it does this while driving and I stop and restart the engine and all is OK for a while, maybe a day.… read more
Roy
Roy
shop foreman
Associate Degree
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GMC Envoy SLT: 2002 gmc envoy fires once then stops seems to
2002 gmc envoy fires once then stops seems to happen when its hot outside sometimes it takes two to three hours to restart. I have changed throtle actuvator control input air sensor fuel pressure regu… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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GMC Envoy: 2005 GMC Envoy V6 - engine light came on and a
2005 GMC Envoy V6 - engine light came on and a misfire is felt during idle. code shows cylinder 6 not firing. I changed complete engine and problem not solved????… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,912 satisfied customers
GMC Envoy SLT: I have a 2005 GMC Envoy with a straight 6 cyl.
I have a 2005 GMC Envoy with a straight 6 cyl. After 20 or 30 minutes of driving, if I am driving 45 or 65 so the rpm's are around 1800, if I give it slight gas, the engine starts to cut and speed up … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
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GMC Envoy SLT: I have GMC Envoy 2007, fuel gage on the instrument
I have GMC Envoy 2007, fuel gage on the instrument panel doesn't work properly- when I start the engine the gage shows the right amount of gas, but after few minutes the arrow dropped to 0 point then … read more
Jerry
Jerry
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Vocational, Technical or Trade Scho
13,108 satisfied customers
GMC Envoy SLT FWD: I have a 2004 GMC Envoy SLT and Im familiar
I have a 2004 GMC Envoy SLT and I'm familiar with the whining noise when it first starts but, now the whining noise increases when I accelerate. What can that be? What is that whining noise coming fro… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
I have a 2002 GMC Envoy. Over the past few weeks I have noticed
I have a 2002 GMC Envoy. Over the past few weeks I have noticed a gas smell after I turn the car off. Also, the car usually takes 2 times to turn the engine over. Is this a fuel filter or pump issue?… read more
Pete
Pete
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General auto certifications
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GMC Envoy SLT: Cam, I have a 2002 GMC Envoy SLT, 6-cyl SUV.
Cam, I have a 2002 GMC Envoy SLT, 6-cyl SUV. Got 175K miles. Installed NEW Fuel Pump, New Fuel Filter, New Iridium Spark Plugs. However, the car has these issues: 1. Rough Idle ar Cold Start in the mo… read more
Randall C
Randall C
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Vocational, Technical or Trade Scho
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GMC ENVOY: Hello Peterpete, Regarding the 2002 GMC ENVOY SLT
Hello Peterpete, Regarding the 2002 GMC ENVOY SLT 4.6cyl SUV, there is still a problem with Check Engine Light. OBD-II Error code P0303, Cylinder-3 misfire detected. Just cleaned Fuel Tank, installed … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,453 satisfied customers
GMC Envoy SLT MY 2002 GMC ENVOY RANDOMLY KNOCKS WHEN I EITHER
MY 2002 GMC ENVOY RANDOMLY KNOCKS WHEN I EITHER START THE CAR, AM AT A RED LIGHT OR PULL INTO PARK. THE SOUND COMES RANDOMLY AND I AM UNABLE TO DUPLICATE IN FRONT OF THE MECHANIC. GMC DOESNT HAVE A CL… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,912 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,912 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

766 satisfied customers

16 years of experience

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

248 satisfied customers

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

Mike S.

Mike S.

ASE Certified Technician

241 satisfied customers

GMC N.A.I.S.E. Certified Auto-Mechanic

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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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