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The GM Genuine Parts 19381535 Headlamp, Instrument Panel Dimmer, and Dome Lamp Switch is a premium aftermarket replacement designed specifically for GM vehicles. Featuring a durable metal construction, 15-amp current rating, and plug-and-play compatibility, this switch delivers OEM-level fit, form, and function. Perfect for professional-grade reliability, it offers smooth dimmer control and is backed by a 12-month/12,000-mile warranty, making it the go-to choice for discerning drivers who demand quality and performance.





| ASIN | B078TTNLK1 |
| Actuator Type | Push Button |
| Best Sellers Rank | #71,236 in Automotive ( See Top 100 in Automotive ) #12 in Automotive Dimmer Switches |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Circuit Type | 1-way |
| Color | Black |
| Compatible Devices | GM vehicles |
| Compatible with Vehicle Type | Passenger Car, Truck, SUV, etc. |
| Connectivity Protocol | X-10 |
| Connector Type | Plug In |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | Touch |
| Current Rating | 15 A |
| Customer Reviews | 4.6 out of 5 stars 1,166 Reviews |
| Global Trade Identification Number | 00808709709497 |
| Included Components | Headlight / Instrument Panel Dimmer and Dome Light Switch |
| International Protection Rating | IP00 |
| Item Dimensions | 4 x 4 x 4 inches |
| Item Type Name | Headlight / Instrument Panel Dimmer and Dome Light Switch |
| Item Weight | 5.44 ounces |
| Manufacturer | ACDelco |
| Material Type | Metal |
| Model | 19381535 |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operating Voltage | 12 volts |
| Operation Mode | ON-OFF |
| Part Number | 19381535 |
| Switch Type | Dimmer Switch |
| Terminal | Through Hole |
| UPC | 808709709497 |
| Unit Count | 1 Count |
| Warranty Description | 12 Months / 12,000 Miles (Parts Only) |
C**.
Plug and play on 2004 GMC Sierra 2500HD, SLT trim.
Plugged right in and solved some odd voltage lighting issues I was having. GM Genuine and ACDelco are the only parts you should be using on these trucks. From 2003 and forward, everything is more voltage-sensitive than previous years with all CAN modules, etc.
L**N
OEM replacement
Fits a 2005 GMC Sierra. This is the same switch as the original one. It is lit up the same and dims and brightens the same. I recommend this part over the aftermarket ones. I tried a cheap switch and had to return it. This one is a little more pricey but is the exact replacement part. Worth buying OEM when it comes to electronics. Itโs very easy to replace this switch. You need to pull off the trim panel around the gages then release a couple of plastic clips. Everything snaps back together.
R**T
Perfect Fit
Fits perfectly, popped right in, and works great!! Excellent price too. Fast Shipping
T**Y
You guys are great
Part delivered quickly and on time and was placed in the right spot to be delivered, and the part itself fit perfectly and fixed the issue in my book you guys are great
S**M
It fixed my dimming dash lights. It squeaks like others said.
I bought this after reading the reviews about the color not matching, and the wheel squeeking. Both are true. It's a darker black. I don't stare at it all the time so I don't care. I care more about my instrument lights working. I wasn't able to adjust them any time they'd come on and sometimes rolling the adjustment a few times fixed it. Installing this fixed it and I wanted to buy AC Delco parts instead of knockoffs because it makes me feel better and helps me sleep at night knowing I used OEM parts. I also like spending money on things and this was a thing I spent money on. Side bonus was I discovered the entire unit lights up an my previous one didn't. I don't think it is GREEN like another person said. It's not 100% white compared to the other buttons in the area. I'm sure my local truck meet will point this out along with the paint peeling off my Duramax because GM went cheap on the primer 12+ years ago and the white paint flakes off. It dims the lights and works perfect. If you want ACDelco buy this. If you want cheap parts don't buy this because it's squeaky when you roll it super fast (How often are you adjusting the lights from 0-100-0-100% while driving?) and I got over it by not adjusting my lights all the time I'm driving. Amazon was SLIGHTLY cheaper than Rock Auto for next day shipping. I didn't want to wait so I paid Amazon prices. Rock Auto has lots of 5% coupons too. EDIT: 2/20/20 update. It is not squeeky. I can use this in my truck like normal and not even notice if there is a noise. Also, I can't tell you if it is too dark, or light, or off colored because I don't eyeball it daily. It DID fix my flickering instrument panel lights.
J**R
Hummer part
This fit well and works like the original one
D**S
Not available
Okay
K**A
I have another issue. Switch was fine.
Iโm sure the part worked fine but I ended up returning as there seems to be another electrical issue with my headlights.
T**F
Perfect
Works as it should, lighting was a bit more blue however it is now starting to fade to look original
R**9
ู ุทุงุจู
ู ู ุชุงุฒ
M**.
Bueno
Bueno ๐๐ป
F**.
Muy buen producto
La calidad del producto
R**L
Works as advertised
As good as OEM product
Trustpilot
4 days ago
5 days ago