SKU: 4242755138

Merchant Automotive 10499 Allison NSBU Switch with Connector Repair Kit 01-04 6.6L GM Duramax LB7

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Description

Merchant Automotive 10499 Allison NSBU Switch with Connector Repair Kit 01-04 6.6L GM Duramax LB7One of the most common problems with the Allison transmission is failure of the Neutral Safety Back Up switch. SYMPTOMS: No start condition Gear shift indicator on dash not following properly Trans stuck in limp mode or fail safe DTC's set indicating pressure switch codes How does it work and why does it cause my transmission not to shift? The vehicle is equipped with a column type shift selector. In addition to the column shifter, another component

One of the most common problems with the Allison transmission is failure of the Neutral Safety Back Up switch.

SYMPTOMS:
  • No start condition
  • Gear shift indicator on dash not following properly
  • Trans stuck in limp mode or fail safe
  • DTC's set indicating pressure switch codes


How does it work and why does it cause my transmission not to shift?
The vehicle is equipped with a column type shift selector. In addition to the column shifter, another component associated with the shift selector is the Neutral Safety Back Up (NSBU) switch mounted on the selector shaft of the transmission. The NSBU switch transmits selector position information to the TCM. The NSBU switch mounts directly onto the transmission housing, from the outside, and detects the angular position of the shift selector shaft. This position is communicated to the TCM so that certain vehicle control functions can be coordinated with the position of the shift controls. The neutral signal output of the NSBU switch is typically used as confirmation that the transmission is in NEUTRAL or PARK before the engine starter is engaged.

The reason that PSM codes may set is that the NSBU switch and the internal PSM switch "look at each other" and "compare readings" Basically, the NSBU switch lets the TCM know what gear position that you, the driver, have selected. The PSM has the job of telling the TCM what gear the transmission is in based on hydraulic inputs. If the data received from the PSM and the NSBU do not agree, the above mentioned trouble codes may set. The NSBU is subject to water contamination and will allow the switch to give faulty readings.

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SKU: 4242755138

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Reviewed in the United States on January 1, 2026
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Looks better in pictures!
Color: Venus - Large Antique
Item looks better in pictures. Head is much smaller than the rest of the body. Very distorted!
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Reviewed in the United States on March 9, 2024
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Beautiful nice sized statue
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Reviewed in the United States on July 29, 2025
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Amazon Customer
San Leandro, US
★★★★★ 5
Excellent gentle creamy light foaming non-active cleanser - better than PC!
Size: 5 Fl Oz (Pack of 1)
Oh my goodness I LOVE this cleanser! I already have and use Remedy deep moisturizing cream in the white bottle- it is an excellent basic, no actives, hydrating moisturizer that is perfect for post laser or if you have any flare ups and cannot use actives. Oily skin will not like it, it is too moisturizing and it will not absorb fast enough for you. Their lighter version will be better for you. My HG lip balm is remedy- it is like lip silk, stays nicely balmy and last for about an hour then dries down and my lips are still moisturized and I am not searching for my lip balm to rehydrate—- exactly what I want in a lip balm, especially after wearing a lip color that dried me out. My other HG lip balm is Mario b and perlier. For reference I greatly dislike Sara h and lanege. Ok so now you know what I like and what I do not like so you can better understand what I think of the product and how this might work out for you. This cleanser is perfect for both oily and dry because of how it goes from a cream to LIGHTLY foaming. I use PC ultra hydrating cream cleanser for years because it so creamy and leaves my skin soft, but I do need to cleanse 2x if I wore heavier makeup and/or sunscreen that day because it does not foam at all—- which is a very good thing for those with dry skin. The foaming agent can be too drying for many w/ dry skin. That cleanser has also went sky high in price to nearly double what it was 5 years ago. Here comes this new remedy cleanser, my new HG! Remedy has somehow found a happy sweet spot with just enough foam to get at the sunscreen and mascara, but is still nice and creamy that leaves my skin soft! It is also half the price of PC, which it should be because there aren’t any expensive actives in this to drive up the price! This is a GOOD thing in your cleanser. You do not need actives in your cleanser unless you are going to leave the cleanser on your skin for at least 10-15 min. Very rarely do I have time for that- I gotta get in and get moving. I’ll spend that time on my post shower skincare and hair are and maybe a quiet cup of coffee. This is hands down one of the best cleanser I have ever used. Someone mentioned they used the remedy cleaning balm first and then this cleanser it was fantastic together—- ty for that tip! I will be trying that!
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Reviewed in the United States on February 18, 2026
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Lexington, US
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Amazing Product and amazing price.
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