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The General Motors GM 20904439 Trailer Brake Continue Relay Assembly is a high-quality OEM part designed for Chevrolet, Buick, GMC, and Cadillac vehicles. Engineered with precision, this relay assembly features a screw connector and silver contacts for reliable performance. Weighing just 4.2 ounces and measuring 4.4 x 3 x 1.2 inches, it is easy to install and integrates seamlessly into your vehicle's braking system. Backed by GM's rigorous testing standards, this part ensures durability and functionality for your automotive needs.
| Connector Type | Screw |
| Contact Material | Silver |
| Contact Type | Online_sales |
| Mounting Type | None" or "PCB Mount |
| Brand | GM Parts |
| Operation Mode | Automatic |
| UPC | 707773710814 |
| Global Trade Identification Number | 00707773710814 |
| Manufacturer | ACDelco |
| Model | 20904439 |
| Item Weight | 4.2 ounces |
| Product Dimensions | 4.4 x 3 x 1.2 inches |
| Country of Origin | USA |
| Item model number | 20904439 |
| Is Discontinued By Manufacturer | No |
| Exterior | Polished |
| Manufacturer Part Number | 20904439 |
| OEM Part Number | 20904439 |
A**R
OEM quality
My 08 Silverado 2500 had the “service trailer brake system” light on the dash. All fuses good, and the brake controller was working properly by being able to adjust trailer braking power. Only thing really left was the relay. This is a real GM part, took 5 mins to install, no more service light.
J**.
Worked perfectly on 2007 Silverado 2500HD
Bought this part to fix the Service Trailer Brake error message on a 2007 Silverado 2500HD. Was easy to replace once I tracked down the location of the old one. I had to drop the spare tire to access it, but mine was located on the driver side, right behind the wheel well. Once you track it down, simply remove the old one, plug in the new one, screw it back down, and you're good to go. Fixed the error message for me.
B**Y
Works on 2008 Chevrolet Silverado 2500hd
Works great on my 2008 Chevrolet Silverado 2500HD LTZ. It got rid of the “service trailer brake system” that kept coming up.
A**R
Excellent product
Very inexpensive and exact fit . Solved my issue .
M**.
Saved a lot of money
Got for a 2007 new body style chevy 2400 hd. Had the check trailer break system alarm on the dash. Got this and the fuse and fixed my problems. worked like a charm. Only reason for 4 star is the mounting holes do not work, they are too small for stock bolts. I ended up zip tying to frame and worked like a charm. I'm certain this fix saved me a lot of money at the stealership.
T**N
Did what it should
Did exactly what it should do and was easy to install , fit well and use , great quality and we have trailer brakes!
A**R
Works
Fixed trailer brake controls in 2010 GMC 2500hd . Very easy install
R**K
As advertised
Works great
Trustpilot
2 weeks ago
1 month ago
