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#1
11-11-2005, 09:11 PM
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4x4 howling
A few days ago it snowed here in Edmonton so I thought it was the perfect time to try out my 4 wheel drive. I put it in 4HI and was on my way but when i started going over 40 km/h a howling noise started coming out of my front differential and the faster i would go the louder it would get. I took it to the dealer because i thought that the differential oil needed to be changed so he did that and he also took it apart to see if anything was broken but said there was nothing. It still howls tho and i dunno wuts wrong. Did anyone else ever experiece this?? Any suggestions on what might be wrong or is this common on Silverado 4x4s?
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 NEW - 2004 Chevrolet Silverado 5.3L RCSB Z71 Hooker AeroChamber - Black Bear Tune - Welds - 33" Mickey Thompsons 01 Silverado 4.8L ECSB 4x4 True Flow - Magnaflow - Black Bear Tune - 35" BFG A/T - 4.56 Auburn SOLD  83 Sierra RCSB 2wd 350 Under construction 
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#2
11-11-2005, 09:22 PM
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Re: 4x4 howling
GM has been having problems with the front diff's and the transfer case. There is a tsb concerning this. Something to do with the bearings in the diff, and/or the clutches in the transfer case.
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ASE Certified Automotive Technician ASE Certified Service Consultant ASE Certified Parts Specialist Employed at an Independent Shop Vehicles: 2005 Silverado LS Crewcab 4X4 1979 GMC 4X4 Jimmy 1977 Chevrolet C20
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#3
11-14-2005, 01:13 AM
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Re: Re: 4x4 howling
Quote:
__________________
NEW - 2004 Chevrolet Silverado 5.3L RCSB Z71 Hooker AeroChamber - Black Bear Tune - Welds - 33" Mickey Thompsons 01 Silverado 4.8L ECSB 4x4 True Flow - Magnaflow - Black Bear Tune - 35" BFG A/T - 4.56 Auburn SOLD 83 Sierra RCSB 2wd 350 Under construction
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#4
11-16-2005, 08:13 AM
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Re: 4x4 howling
Mine does it too, posted here about it way back and evertone said it is normal. My '98 Z71 did'nt do it, nor did my '04 duramax, but this '99 Z71 does, 75k miles, everthing works fine, just some noise in 4x4--even switched to synthetic lubes all around!
Z400, how you like that magnaflow? been lookin real hard at that system for my truck.
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#5
11-16-2005, 05:48 PM
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Re: 4x4 howling
I like my magnaflow a lot bcz its not loud and annoying like some other brands. At idle its nice and quiet so at a red light i can still shake all the cars around me with my bass and when u get on the gas it has a nice "big truck" growl!
__________________
NEW - 2004 Chevrolet Silverado 5.3L RCSB Z71 Hooker AeroChamber - Black Bear Tune - Welds - 33" Mickey Thompsons 01 Silverado 4.8L ECSB 4x4 True Flow - Magnaflow - Black Bear Tune - 35" BFG A/T - 4.56 Auburn SOLD 83 Sierra RCSB 2wd 350 Under construction
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#6
11-16-2005, 05:49 PM
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Re: Re: 4x4 howling
Quote:
__________________
NEW - 2004 Chevrolet Silverado 5.3L RCSB Z71 Hooker AeroChamber - Black Bear Tune - Welds - 33" Mickey Thompsons 01 Silverado 4.8L ECSB 4x4 True Flow - Magnaflow - Black Bear Tune - 35" BFG A/T - 4.56 Auburn SOLD 83 Sierra RCSB 2wd 350 Under construction
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