★★★★★
May 31, 2026
Key switch
Excellent product
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 28 vehicles spanning 1998-2005.
| Year | Make | Model | Description |
|---|---|---|---|
| 2002-2003 | Cadillac | Escalade | Cadillac Escalade Ignition Lock Cylinder TRQ ILA41518 |
| 2003 | Cadillac | Escalade ESV | Cadillac Escalade ESV Ignition Lock Cylinder TRQ ILA41518 |
| 2002-2003 | Cadillac | Escalade EXT | Cadillac Escalade EXT Ignition Lock Cylinder TRQ ILA41518 |
| 1998-2005 | Chevrolet | Astro | Chevrolet Astro Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2002 | Chevrolet | Blazer | Chevrolet Blazer Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2005 | Chevrolet | Express 1500 Van | Chevrolet Express 1500 Van Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2005 | Chevrolet | Express 2500 Van | Chevrolet Express 2500 Van Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2005 | Chevrolet | Express 3500 Van | Chevrolet Express 3500 Van Ignition Lock Cylinder TRQ ILA41518 |
| 1998-2001 | Chevrolet | S10 Pickup | Chevrolet S10 Pickup Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2002 | Chevrolet | Silverado 1500 | Chevrolet Silverado 1500 Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2002 | Chevrolet | Silverado 2500 | Chevrolet Silverado 2500 Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 2001-2002 | Chevrolet | Silverado 2500 HD | Chevrolet Silverado 2500 HD Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 2001-2002 | Chevrolet | Silverado 3500 | Chevrolet Silverado 3500 Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 2000-2003 | Chevrolet | Suburban 1500 | Chevrolet Suburban 1500 Ignition Lock Cylinder TRQ ILA41518 |
| 2000-2003 | Chevrolet | Suburban 2500 | Chevrolet Suburban 2500 Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2003 | Chevrolet | Tahoe | Chevrolet Tahoe Ignition Lock Cylinder TRQ ILA41518 |
| 1998-2001 | GMC | Jimmy | GMC Jimmy Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2002 | GMC | S-15 Sonoma | GMC S-15 Sonoma Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1998-2005 | GMC | Safari | GMC Safari Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2005 | GMC | Savana 1500 Van | GMC Savana 1500 Van Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2005 | GMC | Savana 2500 Van | GMC Savana 2500 Van Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2005 | GMC | Savana 3500 Van | GMC Savana 3500 Van Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2000 | GMC | Sierra 1500 | GMC Sierra 1500 Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2002 | GMC | Sierra 2500 | GMC Sierra 2500 Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 2001-2002 | GMC | Sierra 2500 HD | GMC Sierra 2500 HD Automatic Transmission Ignition Lock Cylinder TRQ ILA41518 |
| 1999-2003 | GMC | Yukon | GMC Yukon Ignition Lock Cylinder TRQ ILA41518 |
| 2000-2003 | GMC | Yukon XL 1500 | GMC Yukon XL 1500 Ignition Lock Cylinder TRQ ILA41518 |
| 2000-2003 | GMC | Yukon XL 2500 | GMC Yukon XL 2500 Ignition Lock Cylinder TRQ ILA41518 |
| Brand Label | Part Number |
|---|---|
| Wells | 4H1051 |
| Chevrolet | 12472980 |
| Wells | LS1012C |
| Standard Motor Products | US287L |
| Standard Ignition | US-287L |
| General Motors | 15815961 |
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.
Excellent product
Easy install, works great!
The 1AIMX00157-Chevrolet GMC Cadillac Ignition Lock Cylinder TRQ ILA41518 is a great product overall with easy installation. Looks and feels like good quality. I installed it on my 1999 Chevy s10 because my old original ignition would stick and it wouldn't turn over so my truck could start. Now that It's replaced it works smoothly like it came off the showroom floor.
Fit like a glove just like every part I purchase. now my key don't come while ignition is on. If your is coming out from being wore out this part is for you .if you have a passlock problem I highly suggest replace this first . Just make sure your ignition switch gear is in the right place.
The item worked perfectly. Initially, I bought one from Amazon (admittedly a little cheaper) however this one triggered the security system and forced me to return it. This one worked perfectly!
Great product worked perfectly
nice
Great and easy to install
Awesome
Nice,easy to install
ILA41518
You're going to have to get it to turn to get the cylinder out and then once you replace it with the new unit it should work
Yes, this will still be able to work.
This part will not fit your vehicle, but we may have a part that is listed to fit. Please enter your vehicle's year make and model in the search bar at the top of the page. This will display parts guaranteed to fit your vehicle. Just be sure to verify all of the information shown in the Vehicle Fit tab before ordering.
Our parts are exact replacements for your vehicle's OEM parts. As long as your year, make, and model match up with our listing, these parts will directly fit and function like the originals.
Ineed housing for 99s10 ingnition lock housing #26049134
This will not come with the set to recode the lock and you may need to contact the dealership for procedure information when installing. Please do not hesitate to contact us with any further questions.
Thank you for the inquiry. You will need to use the keys that come with this kit.
