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Related Medium and Heavy Trucks Questions
Here. I have a GMC 2006 T7500 with starting issue, no glow
I have a GMC 2006 T7500 with starting issue, no glow plug when it start. … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
184 satisfied customers
2006 GMC T7500 Isuzu Motor will not accelerate when you push
2006 GMC T7500 Isuzu Motor will not accelerate when you push down on pedal. It can take up to 10 seconds before it responds.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
2007 7.8 gmc t7500. 15 Fahrenheit. Hesitation after stopping
2007 7.8 gmc t7500. 15 Fahrenheit. Hesitation after stopping then slowly builds power again. Exhaust brake works 30% at best … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
184 satisfied customers
I have a 1999 gmc T7500 with a cat 3126. Started the other
I have a 1999 gmc T7500 with a cat 3126. Started the other day and ran for a second then died. I've discovwewd that there is no power to my shutoff on my high pressure oil pump as well no power to hea… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
No headlight on 2000 gmc t7500 LOOKING for headlight wiring
no headlight on 2000 gmc t7500 LOOKING for headlight wiring diagram to check the system … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,284 satisfied customers
I have an 04 gmc t7500 that had a bad ac clutch we replaced
i have an 04 gmc t7500 that had a bad ac clutch we replaced the compressor but it wont turn on unless i jump it i have no wiring diag to go by can you help me… read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
184 satisfied customers
Cat Man. I have a 2002 GMC T7500 with a 3126 serial #
Hi Cat Man. I have a 2002 GMC T7500 with a 3126 serial # CKM24716 in it. Could you please tell me where the tach signal comes from? Or the pick up for the tach signal. Thanks… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I have a 2003 gmc t7500 cabover truck. i changed the foot
i have a 2003 gmc t7500 cabover truck. i changed the foot valve for the brakes and now it doesn't work. i made a diagram for all the air lines but i must have got one switched anyway … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,284 satisfied customers
Gmc t7500 relay box under stereo shuts on off over the road
hey gmc t7500 relay box under stereo shuts on off over the road and shut down truck intermittently … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,284 satisfied customers
I have a 2000 GMC T7500 with a cat 3126, no start. I have no
I have a 2000 GMC T7500 with a cat 3126, no start. I have no check engine light when key is turned on, and I have no power at pin 70. The two battery pins show power, not sure where pin 70 gets its po… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
I am working on a 1998 Gmc T7500 Truck with a V8-6.0L
I am working on a 1998 Gmc T7500 Truck with a V8-6.0L engine. Cylinder heads were removed together with pistons.I need the reassembly torque specifications for the heads and connecting rods. Thanks fo… read more
Curtis B.
Curtis B.
Retired service manager
Associate Degree
3,486 satisfied customers
Cat man got 98 3126 in a gmc t7500 truck that starts and
hey cat man got 98 3126 in a gmc t7500 truck that starts and runs fine but goes into limp mode and only revs to 1700 unless u shut off and restart, it only has a obd2 connector and doesnt want to comu… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
2005 gmc t7500. Lights won't turn on. Brake lights, turn signal
2005 gmc t7500. Lights won't turn on. Brake lights, turn signal and back up lights work. Is this a fuse problem and if so, which one needs to be replaced. Looked at fuses in dash. They all look good.… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
GMC T7500: I have a 2008 GMC T7500 truck. I am having issues
I have a 2008 GMC T7500 truck. I am having issues with the a/c system. The a/c compressor clutch is staying engaged all the time, even when the key is off. It's running the batteries down and it has d… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,284 satisfied customers
i have a 2005 gmc t7500 with an 6hk1 isuzu diesel engine that
i have a 2005 gmc t7500 with an 6hk1 isuzu diesel engine that blew the heater hose that comes out of the waterpump. we replaced it and two miles later it blew again. we bypassed and have been running … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,284 satisfied customers
GMC Truck: We have a 1999 GMC T7500 automatic truck that the
We have a 1999 GMC T7500 automatic truck that the starter has gone on it. Can we start it with a tow?… read more
diesel-tech
diesel-tech
Owner of landrys truck repair llc
136 satisfied customers
I have a GMC T7500 truck with R.H. outer headlite problem ,HI
I have a GMC T7500 truck with R.H. outer headlite problem ,HI beam won' t come on inner HI beam works fine as do left side,bulb is new. Also daytime running lites work fine. IIII ooo… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

3,632 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,965 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

3,400 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

4,284 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

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All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

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16 years of experience

dieseldan55

dieseldan55

Contractor

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Road Service mechanic for Volvo Construction.

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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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