Certified Aftermarket – Tested and verified to meet OEM specifications, providing a reliable option for OEM replacement parts.
1999-2007 CHEVROLET / GMC Headlamp mounting panel CAPA OEM# 15798920 PL# GM1221122C
OEM Part Number: 15798920
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1999-2002 | CHEVROLET | SILVERADO 1500 | all | headlamp housing support; right side |
| 2001-2002 | CHEVROLET | SILVERADO 1500 HD | all | headlamp housing support; right side |
| 1999-2002 | CHEVROLET | SILVERADO 2500 | all | headlamp housing support; right side |
| 2001-2002 | CHEVROLET | SILVERADO 2500 HD | all | headlamp housing support; right side |
| 2001-2002 | CHEVROLET | SILVERADO 3500 | all | headlamp housing support; right side |
| 2000-2006 | CHEVROLET | SUBURBAN 1500 | all | headlamp housing support; right side |
| 2000-2006 | CHEVROLET | SUBURBAN 2500 | all | headlamp housing support; right side |
| 2000-2006 | CHEVROLET | TAHOE | all | headlamp housing support; right side; except Z71 |
| 1999-2002 | GMC | SIERRA 1500 | all | headlamp housing support; right side |
| 2003-2006 | GMC | SIERRA 1500 | DENALI | headlamp housing support; right side |
| 2007-2007 | GMC | SIERRA 1500 CLASSIC | DENALI | headlamp housing support; right side |
| 2001-2002 | GMC | SIERRA 1500 HD | all | headlamp housing support; right side |
| 1999-2002 | GMC | SIERRA 2500 | all | headlamp housing support; right side |
| 2001-2002 | GMC | SIERRA 2500 HD | all | headlamp housing support; right side |
| 2001-2002 | GMC | SIERRA 3500 | all | headlamp housing support; right side |
| 2000-2006 | GMC | YUKON | all | headlamp housing support; right side; except Denali |
| 2000-2006 | GMC | YUKON XL 1500 | all | headlamp housing support; right side |
| 2000-2006 | GMC | YUKON XL 2500 | all | headlamp housing support; right side |
We recommend obtaining your paint code from your vehicle rather than calling the dealer since they might give you the wrong paint code.
Details
The GM1221122C Headlamp mounting panel is a replacement part designed for CHEVROLET SILVERADO 1500, CHEVROLET SILVERADO 1500 HD, CHEVROLET SILVERADO 2500, CHEVROLET SILVERADO 2500 HD, CHEVROLET SILVERADO 3500, CHEVROLET SUBURBAN 1500, CHEVROLET SUBURBAN 2500, CHEVROLET TAHOE, GMC SIERRA 1500, GMC SIERRA 1500, GMC SIERRA 1500 CLASSIC, GMC SIERRA 1500 HD, GMC SIERRA 2500, GMC SIERRA 2500 HD, GMC SIERRA 3500, GMC YUKON, GMC YUKON XL 1500, GMC YUKON XL 2500 vehicles from model years 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007.
- Compatible Years: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Vehicle Fitment:
- CHEVROLET SILVERADO 1500 1999-2002
- CHEVROLET SILVERADO 1500 HD 2001-2002
- CHEVROLET SILVERADO 2500 1999-2002
- CHEVROLET SILVERADO 2500 HD 2001-2002
- CHEVROLET SILVERADO 3500 2001-2002
- CHEVROLET SUBURBAN 1500 2000-2006
- CHEVROLET SUBURBAN 2500 2000-2006
- CHEVROLET TAHOE 2000-2006
- GMC SIERRA 1500 2003-2006
- GMC SIERRA 1500 1999-2002
- GMC SIERRA 1500 CLASSIC 2007-2007
- GMC SIERRA 1500 HD 2001-2002
- GMC SIERRA 2500 1999-2002
- GMC SIERRA 2500 HD 2001-2002
- GMC SIERRA 3500 2001-2002
- GMC YUKON 2000-2006
- GMC YUKON XL 1500 2000-2006
- GMC YUKON XL 2500 2000-2006
- Replacement Type: Designed to replace the original component with proper dimensions and fitment
- Quality Standard: Manufactured to OEM-style specifications to support accurate alignment and installation
Please Note: Confirm the OEM Part Numbers with your vehicle manufacturer before purchasing to ensure the correct application.
Shipping and Returns
Shipping
Once your order is shipped, the estimated delivery times are as follows:
- Painted Parts: Delivered within 10–15 business days
- Non-Painted Parts: Delivered within 5–10 business days
Read our full shipping policy here.
Returns
Painted parts can be canceled within 24 hours for a full refund. Other parts can be canceled within 12 hours. After that, restocking fees may apply.
Returns are accepted within 30 days of delivery. Parts must be unused, in original packaging, and returned at the buyer’s expense unless we made an error.
All returns and cancellations must be approved by our team. Start a request through our website or contact us at 630-458-0082.
Report any shipping damage within 2 business days of delivery. Refunds are issued after inspection.
Read our returns and cancellation policy here.

























