7 Pin Connector From Truck to Trailer
I have had an issue that happened now on two separate Silverado 2500's. When I would plug the trailer plug into the 7 pin receiver on the truck I would get an error message saying "Check Trailer Wiri...
Forum Discussion
jerryjay11 wrote:
Since I have been using electrical contact grease on my connectors I haven't had any problems with error messages. It helps prevent corrosion and aids the conductivity of the pins.
To add to my post above...
We (GM shop) tried the grease with our GMC due to water in the 7pin, no luck, no change. Connectors were not dirty as the truck was only 6 months old and had seen one or two dirt roads in the time we had it. And to boot, had a brand new 7 pin put on and it still did it. I would get the error and have zero trailer brakes yet all the trailer lights worked fine.
Trailer was checked out and all worked fine. Truck was checked out and all worked fine.
Wonder if there's something in the e-brake that frustrates the GM computers at hookup (theory at best)? Hook it up before power, zero issues.
