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| 01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect |
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06-30-2008, 07:15 PM
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eBay Motors
#1 (permalink)
| | Senior Member
Join Date: Jun 2008
Posts: 135
|  Gear Wine Sound
Hi Guys I Have Only Had My Truck For 2 Days Now, When Slowly Driven Through The Wal Mart Parkn Lot I Can Hear Like A Gear Wine Noise Like At 3-6 Mph Is That Nornmal?
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2004 CHEVY LB7 2500HD, CREW CAB, SB. EDGE JUICE WITH ATTITUDE, AFE STG. 2, PPE BOOST VALVE, FASS 95, 4 INCH SILVERLINE, PPE SLEEVES, TOYO MT`S | 
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06-30-2008, 09:53 PM
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eBay Motors
#2 (permalink)
| | Super Moderator
Join Date: Aug 2005 Location: Alaska
Posts: 1,659
| yes, it is normal as long as you have an allison....which you do...that is the famous allison whine.
__________________ 2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7
4" turbo back MBRP exhaust
TST Powermax Programmer, Diablosport Predator
285/75-16 BFG T/A KOs, Eagle Alloys Series 187
Clifford 2 way remote start, High Idle, Bilsteins
Extang Classic Platinum Tonneau Cover
AFE Magnum Force Stage 2 Proguard 7 intake Kennedy Diesel Merchant Automotive My Photos | |
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06-30-2008, 10:20 PM
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eBay Motors
#3 (permalink)
| | Senior Member
Join Date: Jun 2008
Posts: 135
| Im just getting use to it i guess im used to the trannys in my dodges, it doesnt coast to a stop it feels like it downshiftsto a vert low gear, i guess!
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2004 CHEVY LB7 2500HD, CREW CAB, SB. EDGE JUICE WITH ATTITUDE, AFE STG. 2, PPE BOOST VALVE, FASS 95, 4 INCH SILVERLINE, PPE SLEEVES, TOYO MT`S | |
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06-30-2008, 11:37 PM
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eBay Motors
#4 (permalink)
| | Super Man Moderator Points: 10,685, Level: 44 |
Join Date: Oct 2006 Location: Irwin PA
Posts: 3,168
| How many miles are on it? did you check the trans fluid? Is it burnt? Either way you might want to look into getting the fluid and both filters changed.
The allisons are known to whine like ob_1jr said. The down shifting your feeling is also normal. It should really only do alot when the truck is loaded. The allison is designed to down shift and slow thje truck down instead of using extra braking. There first time I noticed it is when I was hauling a skid steer with a trailer that had junk hydro brakes. I was driving and had to stop for a sudden red light. I thought I was going to sail through it. I jammed the brakes and the allsion down shifted. Very cool!
__________________ Jason 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 4 Kicker 10in Subs & Punch 250amp in 2 custom boxs. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 285/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake  | |
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07-01-2008, 05:53 PM
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eBay Motors
#5 (permalink)
| | BigDaddyDiesel
Join Date: Apr 2008 Location: Galax, Virginia
Posts: 553
| I did not know the allison would do that in these trucks!!!
cool!!! | |
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TRUCK ONE: '03 GMC Sierra 2500HD 4X4 Ext. Cab Short Bed LB7, K&N Intk AFE Fltr, 4in exhaust, Banks Six-gun w/ power PDA and Speed Loader, FASS Fuel System, 6-Spd Manual Tranny w/ Custom Ceramic Dual Disk Clutch By: South Bend
, Pyro and Boost Gauges in the A-Pillar
THE WIFE"S VEHICLE: 2008 Kia Sportage, Fully loaded... 
