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Related Medium and Heavy Trucks Questions
I discovered broken ground cable connecting to starter
i discovered broken ground cable connecting to starter causing volts to run high on 2012 peterbilt 389. during this time i have headlight issues driverside dim doesnt work on dim and on bright only on… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
65 satisfied customers
2005 International 4300, turn on heeadlamp's, lights are
2005 International 4300, turn on heeadlamp's, lights are normal on dims switch to high beams they become very dim… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
593 satisfied customers
I have a 2014 389 peterbilt and the low water light is on. I
I have a 2014 389 peterbilt and the low water light is on. I have plenty of water but can't get the computer to reset so I can finish my delivery. Any help? … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
65 satisfied customers
No low beam headlights on my 2014 peterbilt 389.Also can't
No low beam headlights on my 2014 peterbilt 389.Also can't find fuses for headlights … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
65 satisfied customers
I have a 2016 Peterbilt 389 with a PACCAR engine and my
I have a 2016 Peterbilt 389 with a PACCAR engine and my coolant temp is showing below 100 my transmission temp is below 150 and my oil temp is 150 and pressure is 70...I have been driving for a few ho… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
At idle my dash reads service engine light comes on, when
At idle my dash reads service engine light comes on , when driving it goes off , I called starlink and they said the code reads low fuel pressure below it's normal limits, is t hff at a sensor I will … read more
Bradey V
Bradey V
Certificate
2013 389 Peterbilt has a code saying fuel delivery pressure.
2013 389 Peterbilt has a code saying fuel delivery pressure … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a headlight fault. Only have low beam on left side
I have a headlight fault. Only have low beam on left side and only high beam on tight side. It's a 2016 389 peterbilt glider … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,882 satisfied customers
Low Coolant alarm but not losing any coolant; disconnected
Low Coolant alarm but not losing any coolant; disconnected sensor and still alarms; jumper. connection to still alarms; how do you check sensor? Truck not overheating. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
593 satisfied customers
2012 Peterbilt 389 shows low coolant & check engine when
2012 Peterbilt 389 shows low coolant & check engine when reservoir is full.Have changed sensor & connector to sensor. Same icons show. … read more
Drue Casey
Drue Casey
Heavy Duty Diesel Mechanic
Vocational, Technical or Trade School
GMC c7500 no dim lights, cannot locate the drl module.
GMC c7500 no dim lights, cannot locate the drl module … read more
Wayne Crawford
Wayne Crawford
4,052 satisfied customers
I have a 2012 Isx 15 600 hp in a Peterbilt 389, fuel pump
I have a 2012 Isx 15 600 hp in a Peterbilt 389, fuel pump went out took it to local shop they replaced but timing was out, it ran fine just check engine light and code was for mechanical timing. Took … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2011 Pete 389 and the gauge lights go out after a
I have a 2011 Pete 389 and the gauge lights go out after a few seconds of turning the ignition on and won't come back on … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,882 satisfied customers
Why do all the clearance lights come on and the headlights
Why do all the clearance lights come on and the headlights go to highbeam when just the headlight switch is switched on on my 03 peterbilt 379?… read more
William Herren
William Herren
A.A.S.
2 satisfied customers
I change the headlights on my 389 Peterbilt to the double
I change the headlights on my 389 Peterbilt to the double rectangle like the 379's have. I.m trying to get these HID Grand General lights to work for the low beam. They don't work on there own. It mak… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Hi I have a 2005 387 Peterbilt. With. No high beam. And no
Hi I have a 2005 387 Peterbilt. With. No high beam. And no reverse lights I tried a new turn signal switch and head light bulbs to no avail. Where can I get a wiring schematic? Also do the to 2 items … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
hi there.i have a 08 peterbilt 389. when driving the stop engine
hi there.i have a 08 peterbilt 389. when driving the stop engine light will come on and the truck loses power for a few seconds then goes back to normal. What is the problem?… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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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Meet the Experts:

Daniel Wilson

Daniel Wilson

14,882 satisfied customers

Owner at DJ Wilson

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I am ASE Master Truck Certified.

Wayne

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

Jeremy

Jeremy

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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

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Curtis B.

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cumminsdr

cumminsdr

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All types of Cummins applications

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Chris (aka-Moose)

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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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