Replaces
About TRQ:
TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
This part fits 8 vehicles spanning 2001-2004.
| Year | Make | Model | Description |
|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 HD | Chevrolet Silverado 2500 HD V8 6.6L Turbo Diesel Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | Chevrolet | Silverado 2500 HD | Chevrolet Silverado 2500 HD V8 8.1L Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | Chevrolet | Silverado 3500 | Chevrolet Silverado 3500 V8 6.6L Turbo Diesel Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | Chevrolet | Silverado 3500 | Chevrolet Silverado 3500 V8 8.1L Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | GMC | Sierra 2500 HD | GMC Sierra 2500 HD V8 6.6L Turbo Diesel Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | GMC | Sierra 2500 HD | GMC Sierra 2500 HD V8 8.1L Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | GMC | Sierra 3500 | GMC Sierra 3500 V8 6.6L Turbo Diesel Neutral Safety Switch TRQ SWA41593 |
| 2001-2004 | GMC | Sierra 3500 | GMC Sierra 3500 V8 8.1L Neutral Safety Switch TRQ SWA41593 |
| Brand Label | Part Number |
|---|---|
| Dorman | 511-102 |
| Dorman - TECHoice | 511-102 |
| Standard Motor Products | NS365 |
| Chevrolet | 15179799 |
| Wells | 1S5161 |
| Wells | DR4138 |
| Standard Motor Products | NS54 |
| Standard Ignition | NS-365 |
| Wells | F409 |
| Wells | 521282 |
| Motorcraft | SW1391 |
| Carquest Premium Vehicle Solutions | SBA4482 |
| Motorcraft | SW2276 |
| Duralast | F441 |
| Autopart International | 98740 |
| Niehoff | FF2507 |
| Original Engine Management | 89013 |
| Niehoff | NS71091 |
| Autopart International | 1802-98740 |
| Wells | 53-31607 |
| Duralast | F409 |
| Airtex Engine Management | 1S5308 |
| General Motors | 29540479 |
This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
It did not work correctly on my Allison transmission. The gear selectors PRND321 were not calibrated correctly. I had to replace with a genuine Allison part.
Ordered this product installed it and nothing I thought ok must be the ignition switch $55 wasnt that either then I paid $175 to have a guy with a snap on scanner check it no codes couldnt figure it out I disconnected all plugs and cleaned them towed it to the shop $120 had them check it they charged $75 and said they think its the Nsbu so I went and got another Nsbu and boom trucks fixed driving perfectly I paid $425 plus had to buy a new switch for $250 I wont order anything from here again
This part seemed to fix my issue. May not know for sure until next winter as the problem with Range Shift Inhibited message was mostly on cold wet mornings and the weather has warmed up now here. It did surprisingly seem to make it shift much smoother than before. It wasnt that difficult to install and got me going again and the price was less than half what I could find at local parts store. Thanks again 1A Auto!
The install was straight forward. The part worked great for about a month, and had now failed, and is acting worse than the original part I replaced.
Transmission switch works great. Allison is happy once again!!!
FIT GREAT. TOOK ME ABOUT AN HOUR TO CHANGE OUT . IF YOU STUDY UP ON REPLACING THIS SWITCH THE 2 ELECTRICAL PLUGS TAKE THE MOST TIME. SWITCH WORKS GREAT 5 STAR.
Exactly what I needed for a fraction of the cost of the big box stores or local garages. Fixed the issues I was having. Easy to install. Thank you 1A auto
Switch fit perfectly. Easy to install and connect. Works exactly like it's supposed to. Solved my problem and got me back on the road.
Ordering this product was so easy ,and I recieved it on time....I was installed immediately and has been working perfectly
This part arrived very fast & it has worked very well. Good price!
SWA41593
1A Auto's house brand parts are manufactured by various aftermarket companies specifically for us and built to your vehicle's exact OEM specifications. Shipping to Canada is available for an additional fee. Thanks!
