2001 Tahoe and Surge Brakes

[topdog1957]

I just bought a 2001 Tahoe to move my 19Ft SeaRay back and forth to the lake. Last week when I was backing up the surge brakes locked up on me. I never had a problem when I towed it with my 2005 Envoy. It is a Shorelandr Trailer with a 5 point wiring harness and I am using a 7 point adapter.
Please help?

 

[bruceb58]

Re: 2001 Tahoe and Surge Brakes

Your 7 to 5 adapter may not be routing the reverse signal to the 5th wire. It instead may be routing the electric brake signal. You need to check which one.

 

[Bifflefan]

Re: 2001 Tahoe and Surge Brakes

Also check the trailer grounds. And the back-up pin on the tow vehicle. No power or ground there means no lockout.

 

[dingbat]

Re: 2001 Tahoe and Surge Brakes

Bag the adapter and install a 7 pin on the trailer.

FWIW: The solenoid wire goes to the center pin (back-up) on the 7 pin.

 

[dockwrecker]

Re: 2001 Tahoe and Surge Brakes

Bingo Dingbat. You can't use adapters with back up cutouts/solenoids. Wire the trailer for 7 pin! (This must be at least the 5th time I've said this in the last month...)

 

[iBrent]

Re: 2001 Tahoe and Surge Brakes

Bingo Dingbat. You can't use adapters with back up cutouts/solenoids. Wire the trailer for 7 pin! (This must be at least the 5th time I've said this in the last month...)

I use a 7-pin to 5/4-pin adapter with my Explorer and it activates the reverse solenoid no problem.