Medium and Heavy Trucks

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I have a 2008 335 peterbilt truck and lost turn signals and
I have a 2008 335 peterbilt truck and lost turn signals and 4-ways I have checked all fuses all ok I do not know where the flasher is located but another thing I do not get any lights on dash for turn… read more
BrentR718
BrentR718
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AAS Agriculture Engineering Technology
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We have a 2007 Peterbilt 335 with the C7 cat engine, all 4
We have a 2007 Peterbilt 335 with the C7 cat engine, all 4 of the batteries were stolen and we are trying to re-install batteries but not have a diagram of how the batteries should be. Vin#:**********… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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Sleeper blower fan not working in 2009 70” Peterbilt. Has
Sleeper blower fan not working in 2009 70” Peterbilt. Has power, replaced rheostat, can ground the blower motor and blows on high only. Swapped out temp control unit no change. Installed new relay, no… read more
Daniel Wilson
Daniel Wilson
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2007 peterbilt 335 locking diff inop. 2007 peterbilt 335.
i dont see the switch nor the circuit on the schematics… read more
Wayne
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Need help with my blower motor. 1999 379 PETERBILT. Cab
Need help with my blower motor. 1999 379 PETERBILT. Cab blower and controls work. Bunk blower, doesn't not work. There is power to the blower but can't figure out why it won't turn on. … read more
james Roberts
james Roberts
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I Have 2007 Cat C7 I lost # 6 blowing white smoke I pulled
I Have 2007 Cat C7 I lost # 6 blowing white smoke I pulled the injector when i went to vac out the cylinder bore there looks like alot of coolant was in the cylinder … read more
Cat Man
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I'm trying to change the mirror cover on my 587 peterbilt
I'm trying to change the mirror cover on my 587 peterbilt but how do you get to the screws on the back side of the mirror … read more
Wayne
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The turn signals and hazards arnt working. Can I give you
The turn signals and hazards arnt working JA: What's the make/model/year of your truck? Engine type? Customer: Can I give you the vin? JA: Are you fixing your truck yourself? What have you tried so fa… read more
Chris (aka-Moose)
Chris (aka-Moose)
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2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally brought in bc of loss of power & heavy smoke...replaced injectors (all 6), replaced #2 piston & sleeve, machine shop checked heads but no m… read more
cumminsdr
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I do have a peterbilt 2011 386, im trying to install
Hi. I do have a peterbilt 2011 386, im trying to install mirror's aftermarket turn signals and running lights on both sides. Can you help me to find the power source. Thanks … read more
Wayne
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Heated mirrors dont work on 1997 T800 kenworth. The switch
Heated mirrors dont work on 1997 T800 kenworth. The switch in dash has 2 spades on the back. Theres also 2 wires hanging loose in dash also, one says low mirror heat and other says high mirror heat. B… read more
Daniel Wilson
Daniel Wilson
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Just bought 07 379, dome lites don't work and power mirror
just bought 07 379, dome lites don't work and power mirror also . fuses good, heat does work om mirror … read more
Daniel Wilson
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2004 Peterbilt 335, #2NPLHZ6XX5M863292, Cummins #45423439.
2004 Peterbilt 335, #2NPLHZ6XX5M863292, Cummins #45423439. Fan clutch will not engage when temperature rises. It can be engaged by the override switch or by running the A/C. A one wire Temp. sensor wa… read more
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My signal lights and 4 way flashers are not working. Where
My signal lights and 4 way flashers are not working. Where is the flasher located? It says behind the instrument panel but I can not locate it.… read more
Daniel Wilson
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Constant problems with regeneration right now it regents for
Constant problems with regeneration right now it regents for 1hour off 1hour truck still has plenty of power 2010 peterbilt model 335 cummins motor… read more
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2006 peterbilt 335 with cummins isc 315 has low power in the
2006 peterbilt 335 with cummins isc 315 has low power in the morning, gradually gets better throughout the day. show code for low fuel pressure intermittently and small amount of oil leaking from wher… read more
cumminsdr
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Im trying to add a moto mirror to my 07 386 pete. I found the
Im trying to add a moto mirror to my 07 386 pete. I found the wires in the dash for the power mirror. But I can not figure out which way to connect the wires. There are 3 wires labeled mirr motor. Whi… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

Jeremy

Certified Truck/Bus Technician

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

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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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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