Review on ACDelco 20904439 Original Equipment Continue by James Crofton
Fixes the annoying "Service Trailer Brake System " light on the dash!
The 2013 Sierra 2500 HD had intermittent trailer braking and a warning horn, even without a trailer. I had to drop the spare tire and remove the metal plate containing that and another electrical assembly. Plugged it in, installed it on the platter, replaced the platter and spare tire, and presto! no more annoying dashboard lights. Total time about an hour.
- Handy item
- Everything OK
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