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2500HD/3500 HD Trucks & Drivetrain Discussion Forum for the 2001 & newer 2500HD/3500 Trucks, Transmissions & Drivetrain

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Old 01-13-2003, 09:05 PM
TUFF TUFF is offline
Join Date: Sep 2002
Location: West Mansfield, Ohio
Posts: 20

I just installed the new tan switch on my 01, all of the lights are coming on in the dash, but I only have third and reverse. What the .....?
94 1500 Chevy 6.5TD<br />BD down pipe, no cat, 3.5\" dual stacks. Air box mods,Cowl Hood, 3\" body lift on 33\'s
Old 01-13-2003, 10:02 PM
SteveO SteveO is offline
Join Date: Oct 2001
Location: Mooresville, NC
Posts: 211


Was the Transmission in "Neutral" when you actually put the NSBU on? If not you installed it incorrectly.. If you look at the side of the trans w/out the NSBU on you will see that the Selector shaft has a Neutral position imprinted into the side of the Main Trans case Clue: It's Just above the selector shaft..

The trans HAS to be in NEUTRAL to install the NSBU..

You left the Metal strap on until both bolts were tight?

You double checked to be sure it was plugged in correctly?
2004 Chevrolet 4x4 2500HD CC LB, LB7, AFE Intake, KD 5" Exhaust, KD Twin Lift pumps w/Billet Pickup, 6" Lift 35" MT on 20" ION Forged wheels.
Sold to Dad> 2001 Chevrolet 2500HD 4x4, Crew Cab, LB, LT, LB7-Duramax Diesel/Allison 1000 Series, Autometer Boost/EGT Gauges, AFE Intake, KD 5" Exhaust, Edge w/Attitude, 285/75-16 Brigestone Dueler AT's, B&W Turnover Ball.
Diesel Page member #330
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