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2006 Peterbilt 379. All Accessory Power intermittent power
2006 Peterbilt 379. All Accessory Power intermittent power issue … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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I need a wiring diagram for the Charge start system in a
I need a wiring diagram for the Charge start system in a 2001 Peterbilt 379 with c16 … read more
Wayne
Wayne
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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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Vocational, Technical or Trade Scho
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Left turn signal wont work on a 2007 Peterbilt. 2007
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Daniel Wilson
Daniel Wilson
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3406 cat engine in 379 peterbilt needs rebuilt. was
3406 cat engine in 379 peterbilt needs rebuilt. was wondering if anyone can help me figure out which one i have because it does not appear to be the arriginal engine and all the plates are not on the … read more
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Cruise not working, 2001 379 peterbilt cat 6nz, traced wires
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Cat Man
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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
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Right side turn signal won't come on JA: We'll do all we can
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Daniel Wilson
Daniel Wilson
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How do you access the back up light switch to replace on a
how do you access the back up light switch to replace on a 2006 peterbilt 379 manual transmission?… read more
Daniel Wilson
Daniel Wilson
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Working on a 1998 peterbilt model need head lights gh beam
working on a 1998 peterbilt model need head lights high beam wiring sechematic … read more
Daniel Wilson
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I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e 40 pin. What do I need for the cab. I have the harness from the ecm to the firewall from a donor truck. … read more
Daniel Wilson
Daniel Wilson
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1994 Peterbilt 379 with 60 series Detroit diesel- The brake
1994 Peterbilt 379 with 60 series Detroit diesel- The brake lights only come on if I step on the brakes real hard. If I am using the brakes to slow down not stepping on them hard, they do not come one… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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I have 2007 Peterbilt 379 with a C13 Cat engine that has the
I have 2007 Peterbilt 379 with a C13 Cat engine that has the fuel turned up to far. we are planning to do an overhaul and i'm wondering if turning the fuel back down a bit is a difficult task can you … read more
Cat Man
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2000 Peterbilt 379 i have several leak in my cab. I have fixed
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kwpetetech
kwpetetech
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05 Peterbilt 379, can someone tell me where the brake pedal
05 Peterbilt 379, can someone tell me where the brake pedal position switch is located. I know the approximate located is around the steering column. Can some point me in the exact location of the swi… read more
Expert
Expert
i am trying to replace the leafs on my air ride suspension,
i am trying to replace the leafs on my air ride suspension, my problem is we cannt get the new u bolts in, the frame rail is in the way, how do you install the new u bolts? what steps must we take to … read more
Jim
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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
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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
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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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