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I have a 2003 Peterbilt 379 cab and it keeps burning out the
I have a 2003 Peterbilt 379 cab and it keeps burning out the brake light switch … read more
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Kent Van Wagner
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2006 Peterbilt 379. All Accessory Power intermittent power
2006 Peterbilt 379. All Accessory Power intermittent power issue … read more
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Andy
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Vocational, Technical or Trade School
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I have a 2003 Peterbilt 379, with a 12.7 liter detriot. my
I have a 2003 Peterbilt 379, with a 12.7 liter detriot. my engine fan stays on and the engine fan light stays on , and the toggle switch in the dash will not turn it off. … read more
Daniel Wilson
Daniel Wilson
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02 379 peterbilt with clearance light trouble. Last 6 of vin
Yes checked relays and plug that goes from firewall to trailer … read more
timdieseltech
timdieseltech
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Speedometer doesn't work only works part of time but doesn't
Speedometer doesn't work only works part of time but doesn't read right I think short wire … read more
Cat Man
Cat Man
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I have a 2000 Peterbilt 379 that the speedometer quit
I have a 2000 Peterbilt 379 that the speedometer quit working a couple weeks ago. My mechanic said it has power to the back of the speedometer head that the head is probably bad. Just replaced the spe… read more
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Cat Man
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Left turn signal wont work on a 2007 Peterbilt. 2007
left turn signal wont work on a 2007 Peterbilt JA: What's the make/model/year of your truck? Engine type? Customer: 2007 Peterbilt 357 with C13 cat twin turbo JA: Are you fixing your truck yourself? W… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 2003 peterbilt 379 truck that wont start. the
hi, I have a 2003 peterbilt 379 truck that wont start. the engine turns over fine. I can plug in my scan tool and read the fault codes ( none found), I tested the ignition switch(ok), when you turn th… read more
Daniel Wilson
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Right side turn signal won't come on JA: We'll do all we can
Worked yesterday and today won't work no right side blinker on trk or trl indicater light doesn't even light up and right side won't work when 4 way flashers are on … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a problem with a peterbilt tractor right blinker dies
I have a problem with a peterbilt tractor right blinker dies work when lights off when head lights and marker lights go on it stops blinking can i get some help please… read more
Daniel Wilson
Daniel Wilson
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3,164 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
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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
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2000 peterbilt 379 electrical issue no power to my tail light
2000 peterbilt 379 electrical issue no power to my tail light breaker, no tail light headlight working but stuck on high beam if I splice into wire for the park lights and provide juice I have lights … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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I have a 2013 Peterbilt 389 that keeps blowing out its tail
I have a 2013 Peterbilt 389 that keeps blowing out its tail lights. Hazards, light signals, brake lights work fine. But I cant run my truck after dark because of running tail lights wont work. If I ho… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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My 06 379 Peterbilt the dim lights, dash lights, & all trl
My 06 379 Peterbilt the dim lights, dash lights, & all trl markers intermintally all go out but still have high beams. Does not blow fuse no power at fuse.comes in and out. Then works fine for a week … read more
Expert
Expert
On my 2003 peterbilt 379 when I put my lights on high beam
On my 2003 peterbilt 379 when I put my lights on high beam I've got high beam only on driver side and low beam on passenger side. I've replaced turn signal/dimmer switch. Same results.… read more
JCTech
JCTech
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Vocational, Technical or Trade Scho
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On a 2007 peterbilt wat wires do I need to disconnect from
On a 2007 peterbilt wat wires do I need to disconnect from the headlight switch so jus the headlights com on an not the marker lights .… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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peterbilt 379: have a 1999 379 peterbilt the high beams are
have a 1999 379 peterbilt the high beams are staying on, i have replaced the signal stat and checked all the headlight bulbs for a short, dont have a wire diagram so i don't know where to start lookin… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,164 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

3,164 satisfied customers

Owner at DJ Wilson

Cat Man

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I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

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cumminsdr

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Curtis B.

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dieseldan55

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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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