Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
I have a 2007 peterbilt 379 when I turn lights on and low
I have a 2007 peterbilt 379 when I turn lights on hi and low both on can not switch to low only then 3 seconds in high goes out and will not switch on thinking it is tripping spade breakers in fuse bo… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I have a 2004 Peterbilt 379. When the marker light switch is
I have a 2004 Peterbilt 379. When the marker light switch is turned on, cruise control shuts off along with it. Some of the marker lights will blink with the blinker as well.Also, the clearance lights… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
2007 peterbilt 379 blowing fuse when I turn key on no dash
2007 peterbilt 379 blowing fuse when I turn key on no dash lights or gauges … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
1992 pete 379. No turn signals, 4ways, or brake lights
1992 pete 379. No turn signals, 4ways, or brake lights working. Flasher inside dash can be heard clicking. Left tail light works. Right does not but comes on solid when right turn signal used. Indicat… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 1996 peterbilt 379 that the AC is not working. it
I have a 1996 peterbilt 379 that the AC is not working. it seems like the system is fully charged but the compressor will not engage .I checked all fuses and relays all are fine. the switches on the a… read more
TimothyC1019
TimothyC1019
Lead Diesel Mechanic
High School diploma
I have a 2005 379 peterbilt i just bought and i have found
I have a 2005 379 peterbilt i just bought and i have found that the dash lights on the driver side dash do not work cause of no power but the dash panel on the right has working dash lights . I have c… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
17,959 satisfied customers
I have a 98 379 that the fan wont kick on after an inframe
I have a 98 379 that the fan wont kick on after an inframe new water pump, thermostats, new sensors. On the computer it says fan is constantly on … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
604 satisfied customers
Lost power to my headlight and marker light switch on 2007
lost power to my headlight and marker light switch on 2007 379 pete … read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
1,636 satisfied customers
Have 1992 379 peterbilt shop ecently replace old wiring.
Have 1992 379 peterbilt shop ecently replace old wiring. Everything dash signal all work but started down road everything goes out all dash everything trailer lights. Could it be ground or … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I have a 2004 C-15 Acert Single turbo conversion Peterbilt
I have a 2004 C-15 Acert Single turbo conversion Peterbilt 379. Recently I have been getting a vibration in the truck. It is most prevalent under load and in gears 16th to 18th. Engine runs rough at R… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 99 379 peterbilt that is throwing a # 25 code. It​
I have a 99 379 peterbilt that is throwing a # 25 code . It​ has a series 60 Detroit. What is causing it to throw that code #? … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
604 satisfied customers
Yesterday my speedometer, odometer, voltage gauge and
Yesterday my speedometer, odometer, voltage gauge and instrument light cluster stopped working. Checked fuses and relays in fuse box as well as relay directly behind gauges. Could not resolve the prob… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have zero power to my fuel pump I have checked fuses and
I have zero power to my fuel pump I have checked fuses and grounds I installed 3 new batterys and since then I have zero power to fuel pump 475 cummins 2004 peterbilt 379… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I have a 2011 389 pete it has no power to the washer motor.
I have a 2011 389 pete it has no power to the washer motor. Havea wireing schematic looking for # ***** wire from turn stick module but icant find the module anywhere.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have an 07 Peterbilt 379 why do my headlights go out on
I have an 07 Peterbilt 379 why do my headlights go out on the driver side when I switch to highbeam and low beam works until I turn it until turn on highbeam them nothing on driver side? I tried a new… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
17,959 satisfied customers
My 1996 379 I have no power when I turn key switch on, but
My 1996 379 I have no power when I turn key switch on, but I have all my lights batteries are charged. My volt meter was going from 13 volt down to below 10 volts gauge jumping back and forth. Now not… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 2004 peterbilt that has lost all the interior lights
I have a 2004 peterbilt that has lost all the interior lights and radio do you have an idea where the problem could be at?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
17,959 satisfied customers
I have a 2007 Peterbilt 379 and I have lost my power to my
I have a 2007 Peterbilt 379 and I have lost my power to my marker lights. Fuse seems to be good help… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

6,062 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,353 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

17,959 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 satisfied customers

24 years of experience diagnosing & repairing

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x