Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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  #1  
Old 03-05-2009, 08:11 PM
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My truck batteries went dead so I boosted it off and it happened again a couple days later. So I replaced the batteries, problem solved so I thought. Now I have no inside lights, headlights(has park lights), dash lights, gauges, or radio. I checked all fuses and relays, there good, and i cant find a reset switch. Does it have a safety mode? Any Ideas, I would appreciate it.
 
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Old 03-05-2009, 08:29 PM
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Are there any relays under the hood on that truck? Ford has a relay/fuse block under the hood on the driver side, might check that. Sounds like a fuse to me. I had a similar problem on my bronco when i was changing the wire loom but i think it was cause i was drinkin and playin with wires!
 
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Old 03-05-2009, 10:09 PM
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Yea i replaced all relays and fuses, under dash and under the hood just to be safe and still nothing.
 

Last edited by KuNtRy BoY; 03-06-2009 at 07:33 AM.
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Old 03-05-2009, 11:17 PM
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i know on a dodge there is a huge like 120A fusible link under the hood that caused this problem, i hate to beat the check the fuses thing but its weird that you dont have any headlights or dash lights
 
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Old 03-06-2009, 07:32 AM
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Yea I no the radio and power windows and locks dont work either. Im stumped cause all the fuses and relays are new and I rechecked all of them again and there fine.
 
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Old 03-06-2009, 09:25 AM
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Do you have an alarm on the truck? Sounds like all the functions an alarm are hooked up to, maybe jump starting it fried something. Shouldn't, but maybe it did.
 
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Old 03-06-2009, 10:52 AM
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maybe there is a short somewhere
 
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Old 03-06-2009, 08:38 PM
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you connect the batteries and disconnected them in the correct order ya?
 
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Old 03-06-2009, 09:39 PM
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I took it to the shop today and they cant find a short and cant pick up any codes either. It all worked fine until I changed the batteries. WTF!!!
 
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Old 03-13-2009, 06:40 PM
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Well the shop figured it out. When they installed my aftermarket stereo, to keep the door ding you have to put in an aftermarket dinger. The one that they put in shorted out, took it out problem solved. Been in the shop all week for that, sux huh?
 


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