TechPro GM1221121C Headlight Mounting Panel - Left

OE Quality 60-Day Returns

TechPro GM1221121C Headlight Mounting Panel - Left

Brand	TechPro GM1221121C
Position	Left
HEIGHT (In)	14
LENGTH (In)	28
WEIGHT (lbs)	7
WIDTH (In)	16
Fits	Chevrolet and GMC · 75 vehicles

OE reference. Cross-references GM 15798919 for the same application.

Left-side support. Provides a stable mounting point for the headlamp housing.

Body repair part. Used in exterior lighting and front-end panel restoration.

Cross-references 15798919 for the same application. See all 1.

$30.56Free shipping

In stock · usually ships same day before 1pm CST

Step 1 — Confirm fitment

Free return shipping if it doesn't fit when you check fitment here first.

Confirm position

Select your vehicle to confirm fitment

Verify this part fits before purchasing — free returns if it doesn't

Step 2 — Quantity

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all Headlight Mounting Panel options

Headlight Mounting Panel Overview

This TechPro headlight mounting panel, part number GM1221121C, is a direct-fit exterior lighting support component for the left side. It is built for applications that require a stable headlamp housing support on compatible Chevrolet and GMC trucks and SUVs.

Key Features

Headlight mounting panel for exterior lighting repair
Left-side fitment for confirmed applications
Dimensions: 28 in. length, 16 in. width, 14 in. height
Weight: 7 lbs.
TechPro part number GM1221121C for ordering and reference

Detailed Description

GM1221121C is a replacement headlight mounting panel used to secure and support the headlamp housing on the left side of the vehicle. Compatible With 1999-2002 Chevrolet Silverado 1500, left; 2001-2002 Chevrolet Silverado 1500 HD, left; 1999-2002 Chevrolet Silverado 2500, left; 2001-2002 Chevrolet Silverado 2500 HD, left; 2001-2002 Chevrolet Silverado 3500, left; 2000-2006 Chevrolet Suburban 1500, left; 2000-2006 Chevrolet Suburban 2500, left; 2000-2006 Chevrolet Tahoe, left; 1999-2006 GMC Sierra 1500, left; 2001-2002 GMC Sierra 1500 HD, left; 1999-2002 GMC Sierra 2500, left; 2001-2002 GMC Sierra 2500 HD, left; 2001-2002 GMC Sierra 3500, left; 2000-2006 GMC Yukon, left; 2000-2006 GMC Yukon XL 1500, left; 2000-2006 GMC Yukon XL 2500, left; and 2007 GMC Sierra 1500 Classic, left. This part cross-references GM OE 15798919 for the same application.

Common Repair Uses

Broken or bent headlamp housing support
Damage from front-end impact or collision repair
Misaligned headlight assembly mounting points
Corrosion or fatigue in the lighting support structure
Replacement during body panel restoration

Installation Notes and Tips

Verify left-side fitment against the vehicle’s trim and model year before installation. Compare the existing mounting points and headlamp housing support layout to confirm proper alignment with GM1221121C. Professional body repair procedures are recommended for accurate panel positioning and lighting alignment.

Quality Assurance

TechPro replacement body and lighting components are selected for application-specific fitment and serviceability on confirmed vehicles.

This part fits 75 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Submodel	Position	Notes
2007	GMC	Sierra 1500 Classic	Denali	Left	headlamp housing support
2006	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2006	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2006	Chevrolet	Tahoe	LT	Left	headlamp housing support
2006	GMC	Sierra 1500	Denali	Left	headlamp housing support
2006	GMC	Yukon	SLT	Left	headlamp housing support
2006	GMC	Yukon XL 1500	—	Left	headlamp housing support
2006	GMC	Yukon XL 2500	—	Left	headlamp housing support
2005	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2005	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2005	Chevrolet	Tahoe	LT	Left	headlamp housing support
2005	GMC	Sierra 1500	Denali	Left	headlamp housing support
2005	GMC	Yukon	SLT	Left	headlamp housing support
2005	GMC	Yukon XL 1500	—	Left	headlamp housing support
2005	GMC	Yukon XL 2500	—	Left	headlamp housing support
2004	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2004	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2004	Chevrolet	Tahoe	LT	Left	headlamp housing support
2004	GMC	Sierra 1500	Denali	Left	headlamp housing support
2004	GMC	Yukon	SLT	Left	headlamp housing support
2004	GMC	Yukon XL 1500	—	Left	headlamp housing support
2004	GMC	Yukon XL 2500	—	Left	headlamp housing support
2003	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2003	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2003	Chevrolet	Tahoe	LT	Left	headlamp housing support
2003	GMC	Sierra 1500	Denali	Left	headlamp housing support
2003	GMC	Yukon	SLT	Left	headlamp housing support
2003	GMC	Yukon XL 1500	—	Left	headlamp housing support
2003	GMC	Yukon XL 2500	—	Left	headlamp housing support
2002	Chevrolet	Silverado 1500	—	Left	headlamp housing support
2002	Chevrolet	Silverado 1500 HD	—	Left	headlamp housing support
2002	Chevrolet	Silverado 2500	—	Left	headlamp housing support
2002	Chevrolet	Silverado 2500 HD	—	Left	headlamp housing support
2002	Chevrolet	Silverado 3500	—	Left	headlamp housing support
2002	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2002	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2002	Chevrolet	Tahoe	LT	Left	headlamp housing support
2002	GMC	Sierra 1500	—	Left	headlamp housing support
2002	GMC	Sierra 1500 HD	—	Left	headlamp housing support
2002	GMC	Sierra 2500	—	Left	headlamp housing support
2002	GMC	Sierra 2500 HD	—	Left	headlamp housing support
2002	GMC	Sierra 3500	—	Left	headlamp housing support
2002	GMC	Yukon	SLT	Left	headlamp housing support
2002	GMC	Yukon XL 1500	—	Left	headlamp housing support
2002	GMC	Yukon XL 2500	—	Left	headlamp housing support
2001	Chevrolet	Silverado 1500	—	Left	headlamp housing support
2001	Chevrolet	Silverado 1500 HD	—	Left	headlamp housing support
2001	Chevrolet	Silverado 2500	—	Left	headlamp housing support
2001	Chevrolet	Silverado 2500 HD	—	Left	headlamp housing support
2001	Chevrolet	Silverado 3500	—	Left	headlamp housing support
2001	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2001	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2001	Chevrolet	Tahoe	LT	Left	headlamp housing support
2001	GMC	Sierra 1500	—	Left	headlamp housing support
2001	GMC	Sierra 1500 HD	—	Left	headlamp housing support
2001	GMC	Sierra 2500	—	Left	headlamp housing support
2001	GMC	Sierra 2500 HD	—	Left	headlamp housing support
2001	GMC	Sierra 3500	—	Left	headlamp housing support
2001	GMC	Yukon	SLT	Left	headlamp housing support
2001	GMC	Yukon XL 1500	—	Left	headlamp housing support
2001	GMC	Yukon XL 2500	—	Left	headlamp housing support
2000	Chevrolet	Silverado 1500	—	Left	headlamp housing support
2000	Chevrolet	Silverado 2500	—	Left	headlamp housing support
2000	Chevrolet	Suburban 1500	—	Left	headlamp housing support
2000	Chevrolet	Suburban 2500	—	Left	headlamp housing support
2000	Chevrolet	Tahoe	Limited	Left	headlamp housing support
2000	GMC	Sierra 1500	—	Left	headlamp housing support
2000	GMC	Sierra 2500	—	Left	headlamp housing support
2000	GMC	Yukon	SLT	Left	headlamp housing support
2000	GMC	Yukon XL 1500	—	Left	headlamp housing support
2000	GMC	Yukon XL 2500	—	Left	headlamp housing support
1999	Chevrolet	Silverado 1500	—	Left	headlamp housing support
1999	Chevrolet	Silverado 2500	—	Left	headlamp housing support
1999	GMC	Sierra 1500	—	Left	headlamp housing support
1999	GMC	Sierra 2500	—	Left	headlamp housing support
No rows match your filter.

Directly replaces or cross-references 1 part number

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

15798919