7-Way Bypass Adapter for 2021 Chevrolet/GMC Silverado/Sierra With LED Trailer Lights

Question

Question:

My trailer uses a 7 pin trailer connector. Is there one that my 2021 GMC will recognize?

asked by: Steve

0

Expert Reply:

The Trailer Connector Adapter w/ Lamp-Out Sensor Bypass # 20142 will work for your 7-way trailer and your 2021 GMC Sierra 1500. The adapter has a built-in bypass system that is designed to eliminate the issues that are associated when pulling a trailer that has led lights.

expert reply by: Bud M

0

Answer 1

Hello again Jerry; yes, the Trailer Connector Adapter w/ Lamp-Out Sensor Bypass #20142 will work with your truck. It works with any vehicle that has a 7-way. Historically, European vehicles were the ones that had sensor issues with LED trailer…

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Answer 2

Since your new 2020 GMC Sierra is not able to detect the LED lights on your trailer you will need to use a Lamp Out adapter #C35FR if your trailer has a 4 or 5 way connector or #20142 if your trailer has a 7-way connector. These adapters have built…

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Answer 3

It is pretty common for new vehicles to have issues with registering that a trailer with LED lights is connected due to the power draw being so much less than the computer on your 2021 GMC Sierra 1500 is expecting to see. What you need is the 7-Way…

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Answer 4

Both of the parts you mentioned, the Trailer Connector Adapter with Lamp-Out Sensor Bypass #20142 and 7-Way Trailer Adapter #C57003 are universal parts so both will work on your 2020 GMC Sierra 3500. The Curt 7-way adapter is put in our fit guide as…

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Answer 5

When you hooked up to the GM trucks, did you notice if the truck said trailer connected? The towing computer on the newer GMC trucks is kind of finicky and if it did not recognize the trailer, or the trailer was not setup in the system it will not…

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Answer 6

There is a connector that some vehicle's require to use LED trailer lights which is #C35FR for 7-way to 5-way/4-way or #20142 for 7-way to 7-way. The way you would know if you need one of these adapters is your vehicle would display an error code…

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Answer 7

The issue you are having definitely could be that the LED trailer lights aren't pulling enough power for your 2019 Chevy Silverado to read the lights are connected, causing the message you are seeing. That's more than likely what is…

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Answer 8

Hey Jason, sorry to hear that. What is most likely happening is that the diode in the adapter is getting hot and it no longer shows the correct amount of resistance. Do you currently have two of these adapters? If so, you could prove this by using…

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Answer 9

To correct the issue the couple is having powering LED trailer lights with their 2020 GMC Sierra Denali 2500 I recommend going with the Trailer Connector Adapter w/ Lamp-Out Sensor Bypass #20142 due to it being a simple plug and play adapter that…

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Answer 10

It sounds like you either have a weak/bad ground or your lights are drawing too much power. In order to find the problem lets start by double checking the connector on your 2020 GMC Sierra 2500. Using a circuit tester like #PTW2993, check for power…

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Answer 11

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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7-Way Bypass Adapter for 2021 Chevrolet/GMC Silverado/Sierra With LED Trailer Lights

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