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#1 (permalink) |
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Diesel Enthusiast
Join Date: Jun 2009
Posts: 24
iTrader Score: 0 reviews
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2003 2500hd w/bose speaker static/pops
Following a close encounter with lightning my driver side speaker pops and has static when key is in and no radio on, with radio all speakers seem to have static. The cd player needed repair so it was repaired and tested good, installed new bose amplifier, cleaned grounds on frame below driver door, replaced both batteries and cleaned cable ends and still problem exists. My latest thought is the ignition switch possibly bad but I'm getting tired of throwing parts at this thing, any ideas?
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2003 2500HD, 4x4, stock w/Predator, with Lance 845 on back. Pump rub at 99,000 Stepper motors at 120,000 Injectors at 122,000 |
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#2 (permalink) |
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Diesel Enthusiast
Join Date: Jun 2009
Posts: 24
iTrader Score: 0 reviews
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Well I have eliminated the speakers, the static is only on the driver side and swapping pass for driver speaker has no effect.
I have a Diablo Predator that reads engine codes, should it read chassis elecrtical codes too? should stealership be able to easilly diagnoss?
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2003 2500HD, 4x4, stock w/Predator, with Lance 845 on back. Pump rub at 99,000 Stepper motors at 120,000 Injectors at 122,000 |
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#3 (permalink) |
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Diesel Enthusiast
Join Date: Jun 2009
Posts: 24
iTrader Score: 0 reviews
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Well most of my hair has been pulled out along with the interior of my truck. Entire consol harness is exposed and can find no problems there, I think I eliminated the ign switch by pulling all the connectors and jumping the circuits which produces the same static pop as when the key is turned from on to run to start and back. I have a constant static hum when stereo is on, tried adding a ground from frame to harness ground but no change. The one puzzeling thing is the black/white stereo harness ground is good with no key but as soon as the key goes in the resistance goes to 5.0 and stays like that for about 10 seconds after the key is removed.
![]() Any idea besides the obvious of taking it to the dealer?
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2003 2500HD, 4x4, stock w/Predator, with Lance 845 on back. Pump rub at 99,000 Stepper motors at 120,000 Injectors at 122,000 |
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#4 (permalink) |
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Diesel Technician
Join Date: May 2005
Location: Lubbock, TX
Posts: 444
iTrader Score: 0 reviews
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Do you think you might be hearing the slow speed class 2 buss. Those would be the twisted pairs.
And do you hear the noise when in the CD mode? And I don't understand the 5? volts, ohms???
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testdrive
2003 Chevrolet Duramax Suburban K2500 powered by a 2007 LBZ Duramax Diesel 6SP Allison with Transgo JR mod Duramax Suburban Brotherhood member #7 Michelin XPS Traction LT235/85R16 EFI DSP5 tuned thanks to the help of thefermator |
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#5 (permalink) |
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Diesel Enthusiast
Join Date: Jun 2009
Posts: 24
iTrader Score: 0 reviews
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Not sure what I'm hearing? and I have not tried a cd yet. The Ground test reads .2 ohms from the stereo harness to the chassis ground post untill I insert the key, then goes to 5.0 ohms untill the key is removed and a 10 sec. wait then goes back to .2.
Just tried a cd and same static hum. I could almost live with the static hum but the popping when turning the key on and off is bad. The static noise is heard on all left side speakers with the driver door being the loudest. Thanks for the reply.
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2003 2500HD, 4x4, stock w/Predator, with Lance 845 on back. Pump rub at 99,000 Stepper motors at 120,000 Injectors at 122,000 |
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#6 (permalink) |
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Diesel Technician
Join Date: May 2005
Location: Lubbock, TX
Posts: 444
iTrader Score: 0 reviews
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I am going to say the pop is because the amp is turned on from the class 2 buss and it should not be. Can you try another radio just for test? Will it pop when turning on the key even with the radio turned off?
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testdrive
2003 Chevrolet Duramax Suburban K2500 powered by a 2007 LBZ Duramax Diesel 6SP Allison with Transgo JR mod Duramax Suburban Brotherhood member #7 Michelin XPS Traction LT235/85R16 EFI DSP5 tuned thanks to the help of thefermator |
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#7 (permalink) |
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Diesel Enthusiast
Join Date: Jun 2009
Posts: 24
iTrader Score: 0 reviews
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Pops and static come with the chimes so radio does not have to be on for it to occur. The way I have killed the sound was to pull the amp fuse and that is nice with no chimes and no popping and no static but the problem is there's no radio.
__________________
2003 2500HD, 4x4, stock w/Predator, with Lance 845 on back. Pump rub at 99,000 Stepper motors at 120,000 Injectors at 122,000 |
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#8 (permalink) |
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Diesel Technician
Join Date: May 2005
Location: Lubbock, TX
Posts: 444
iTrader Score: 0 reviews
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But, the chime originates in the head unit. Part of the head unit is alive at all times, the chimes. The radio has 12volts on it at all times and the turn on whether radio or chime is done by the Class 2 buss.
Still think it would be good to test with another radio.
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testdrive
2003 Chevrolet Duramax Suburban K2500 powered by a 2007 LBZ Duramax Diesel 6SP Allison with Transgo JR mod Duramax Suburban Brotherhood member #7 Michelin XPS Traction LT235/85R16 EFI DSP5 tuned thanks to the help of thefermator |
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#9 (permalink) |
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Diesel Enthusiast
Join Date: Jun 2009
Posts: 24
iTrader Score: 0 reviews
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I agree to test with another radio but I have no access to one and it would need to be unlocked at the dealer even so correct?
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2003 2500HD, 4x4, stock w/Predator, with Lance 845 on back. Pump rub at 99,000 Stepper motors at 120,000 Injectors at 122,000 |
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#10 (permalink) |
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Diesel Technician
Join Date: May 2005
Location: Lubbock, TX
Posts: 444
iTrader Score: 0 reviews
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If you just plug the test unit, it will say locked, but it also will be alive for chime maybe that would give the test needed. Most audio shop can program the radio, if needed.
I see the Bose radios for sale on the forum at times.
__________________
testdrive
2003 Chevrolet Duramax Suburban K2500 powered by a 2007 LBZ Duramax Diesel 6SP Allison with Transgo JR mod Duramax Suburban Brotherhood member #7 Michelin XPS Traction LT235/85R16 EFI DSP5 tuned thanks to the help of thefermator |
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