How do you replace the nsbu switch on a Duramax?
How do you replace the nsbu switch on a Duramax?
Remove the 2 bolts that attach the NSBU switch (the front driveshaft will get in the way a bit but you should be able to access the bolt with the socket) and pull off the old NSBU switch. There’ll be some resistance when you pull it off.
Why does the nsbu need to be replaced?
Why does the NSBU need to be replaced? – due to road salt/water/debris getting into the switch via the switch hub and contaminates and corrodes the internals. The crap gets kicked up onto the switch on all left hand turns which affects the operation of the transmission because transmission shifts and functions are controlled by this switch.
What are the DIC codes for the nsbu switch?
– following DIC codes MAY suggest the NSBU as the culprit: P0700, P0708, P0847, P0872, P0875, P1711 and P1713. – no engagement even though your shifter is in D or R (like you were in neutral)…this was my situation (and I received a SEL (service engine light) code P0700). – you will only have forward motion in 3rd gear or reverse.
Where is the nsbu switch located on an Allison Transmission?
What is a NSBU switch? – acronym for “Neutral Start Back Up”. Sometimes also referred to as a PNP (“Park Neutral Position”) switch. Where is the NSBU switch located? – driver’s side of the Allison transmission.
How big is the nsbu switch on a Duramax?
Slide the new NSBU switch over the selector shaft. The metal clip (neutral assurance bracket) on the switch helps to ensure the switch is properly aligned to the shaft. For the geeks out there, the bolts should be tightened to 18-21 lb ft.
When do I need to replace the nsbu switch?
– 2001-2004 Allison NSBU Switch (LB7). Part no. 29540479. Has 2 electrical connectors on the switch. – 2004-2005 Allison NSBU Switch (LLY). Part no. 29541852. Has 1 electrical connection on the switch. Why should I replace the switch as opposed to taking it to my dealership?
What is a NSBU switch? – acronym for “Neutral Start Back Up”. Sometimes also referred to as a PNP (“Park Neutral Position”) switch. Where is the NSBU switch located? – driver’s side of the Allison transmission.
What makes the nsbu stay in the neutral position?
The new switch also has a thin metal clip called a Neutral Assurance Bracket to ensure that the NSBU remains in the neutral position. DO NOT REMOVE UNTIL THE NEW SWITCH HAS BEEN INSTALLED.
