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I'm getting ready to do my fuel pressure check and I need to
I'm getting ready to do my fuel pressure check and I need to know what the pressure should be when I'm going up a hill it will sometimes pull to heal other times it will act like it want to pull the h… read more
Ron
Ron
Automotive Tech
Vocational, Technical or Trade Scho
37,476 satisfied customers
In Texas. just looking for possible solutions to why my 2003
hello. I'm Mark in Texas. just looking for possible solutions to why my 2003 GMC Sierra Denali has started having reduced engine power mode fails over the last year. bought it new and only happened a … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
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The past 8 weeks or so, my 2004 1500 4x4 has been not
The past 8 weeks or so, my 2004 1500 4x4 has been not dropping into first gear upon start up. If I drive for 50 feet or so, using only 2nd or 3rd (the only gears available), shut it off, restart, put … read more
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Gary
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Vocational, Technical or Trade Scho
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My check engine light was on. It would go off when the
My check engine light was on. It would go off when the temperature got above about 70 degrees. I went to get an inspection (Texas) and it came on during the inspection. The guy at the station said it … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
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The check engine light comes on periodically while the motor
The check engine light comes on periodically while the motor is idling. The scan code says the tps is out of range. The truck still runs fine but I am unable to remote start the truck due to the fact … read more
Dan
Dan
Dealership Technician
Associate Degree
2,195 satisfied customers
2008 gmc sierra 4.8 setting 4 codes P0191 P069E P0172 P0175.
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I experienced a problem last night in which my 2009 gmc
hello I experienced a problem last night in which my 2009 gmc sierra would go into a reduced power mode and i would have to pull over and shut it off and wait maybe 5 mins for it to reset..initially t… read more
GM Bob
GM Bob
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Crank no start and low pressure in intake 11 GMC Acadia. Yes
Crank no start and low pressure in intake 11 GMC Acadia. … read more
Chad Farhat
Chad Farhat
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I'm having a problem with my 2004 gmc sierra 5.3 2wd it
I'm having a problem with my 2004 gmc sierra 5.3 2wd it started running poorly couple days ago threw a couple codes p0641 and p0101. I drove the truck today and it died on me would not restart? Also w… read more
Dan
Dan
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GMC Envoy SLT: 2006 envoy slt throwing code p0171. adding 29%
2006 envoy slt throwing code p0171. adding 29% fuel and idling bad on cold start up. after badly running for the first few minutes the motor will snap to running perfect and not have any issues after.… read more
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Dan
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GM Acadia SLT AWD: Hi,I have a problem in my Acadia 2009
Hi, I have a problem in my Acadia 2009 SLT AWD I was driving outof the parking of a shopping mall, once I got "engine power reduced" message with a loss of power. Quickly I parked the car, and check t… read more
Gary
Gary
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Vocational, Technical or Trade Scho
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GMC Sierrra 1500: I have a 2003 gmc sierra 1500 z71with the
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Dave Nova
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GMC Sierra: I have a 2004 GMC Sierra SLE 5.3L 4x4 that I am
I have a 2004 GMC Sierra SLE 5.3L 4x4 that I am having an intermittent issue with. The problem is the truck goes into reduced power mode when using certain electrical systems(high beams, brake lights,… read more
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Dave Nova
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GMC Canyon: Hi I have a 2006 canyon it is throw in the p1516
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I have recently purchased a 2009 GMC Sierra 3500HD with the Duramax diesel. It has around 134,000 miles on it of which I have put around 6,000 miles. I was pulling my trailer down interstate the other… read more
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Chris (aka-Moose)
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GMC K1500 Sierra 4x4 crew cab: I have a 2008 GM Sierra 1500
I have a 2008 GM Sierra 1500 5.3. When I'm driving on the highway at approximately 67 70 miles an hour the engine goes into the v4 mode and you hear are louder than normal noise in the exhaust does GM… read more
Doug
Doug
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GMC Sierra 1500 HD Classic SLT: I have an 03 sierra 1500HD
I have an 03 sierra 1500HD and it threw a knock sensor code about a month ago. It went off after a week. The last time I drove it was a couple of days ago and everything was fine. I went out to my pic… read more
Pete
Pete
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General auto certifications
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first thing in morning i start my 2003 envoy it starts rpm
first thing in morning i start my 2003 envoy it starts rpm says 900 but sounds like its running on 4 cyl step on gas it only goes 5 miles per hour even with pedal to the floor.. lite on dash says redu… read more
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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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