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First Tow did not go good

d61mccarty

By d61mccarty
in 2019-2025 Silverado & Sierra

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drucker Enthusiast

drucker

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Since you all are talking about trailers and hook ups. I have a 2019 HC.

 

My boat trailer (aluminum) lights don't work like they should. The truck shows it disconnect/connects all the time while I'm driving. I posted about this earlier on here or the facebook page and people said check the ground. Everything was tight like it should be so I completely rewired the trailer and still disconnects/connects on its own. Last weekend I hooked the boat to my wife's Tahoe and the lights work perfect. Can someone explain that? FYI they worked as they should on my 2014 also.

 

My flatbed (metal) trailer lights work with no problems when hooked to my truck.

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j-ten-ner
j-ten-ner

It's kinda odd that the truck is throwing codes all over the place. Maybe it's a loose battery connection. Wouldn't be the first.   so long j-ten-ner

OHDenali
OHDenali

I wont argue the ECM, but....  Truck hasn't been started for a week.

d61mccarty
d61mccarty

2019 GMC Crew short box Max Tow two weeks old 561 miles. We towed the 8.000 lbs. travel trailer 30 miles to the lake and I couldn't ask for a better truck.Until on the way out of the campground I was

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d61mccarty Enthusiast

d61mccarty

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2 hours ago, BlancoSilverado said:

500 miles is the break in period for these trucks. i can site the manual if you would like? 

Personally i didn't tow until i hit 2000miles but GM says do it. 

 

OP, im sorry to hear about this. 

 

If the OP didn't unplug the trailer then wouldn't have the battery drained? 

The trailer was plugged into the truck during travel. I was waiting in the sewage dumping line when the truck quite. As said above the dealer stated it was a ECM failure. If they wanted breakend to last 2000 miles they should have said so. I waited the 500 they specify. The warranty will cover the repair and the tow.  

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OHDenali Enthusiast

OHDenali

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31 minutes ago, d61mccarty said:

The trailer was plugged into the truck during travel. I was waiting in the sewage dumping line when the truck quite. As said above the dealer stated it was a ECM failure. If they wanted breakend to last 2000 miles they should have said so. I waited the 500 they specify. The warranty will cover the repair and the tow.  

Hey Daryl,

 

Hopefully they'll get it straightened out. Sucks having something new (and expensive) not work properly. 

 

I meant no disrespect to you with my posts. I thought it not good that the service tech was not familiar with the 7-pin hookup and thought you might want to know he was wrong about at least one thing. 

 

We're heading out next month for a couple of weeks, 1st trip with the new truck. Fingers crossed it will all work ok.

 

Happy camping!

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Roscopcoletrain Senior Enthusiast

Roscopcoletrain

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3 hours ago, cpttimerestraint said:

I regularly do this if we are just passing through for a night on a road trip.

Sent from my Moto G (5) Plus using Tapatalk
 

I suppose an overnight thing would be fine. We tend to spend more than just a night at places, so it we're always unhooking. 

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wizard4878 Enthusiast

wizard4878

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a little off topic but...

I have a 12' X 6' enclosed trailer,  no battery on trailer,  and noticed while I was parked, with the trailer hooked up that the tail lights would flash about every minute or so, none of the other lights seemed to flash.   Just once, then nothing for about another minute, and again a quick flash.  My trailer tail lights are led, and all the rest of the marker lights are not, so it didn't seem to affect the truck battery,  but I thought it was a bit odd.

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TheElementalCashew Enthusiast

TheElementalCashew

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9 hours ago, drucker said:

Since you all are talking about trailers and hook ups. I have a 2019 HC.

 

My boat trailer (aluminum) lights don't work like they should. The truck shows it disconnect/connects all the time while I'm driving. I posted about this earlier on here or the facebook page and people said check the ground. Everything was tight like it should be so I completely rewired the trailer and still disconnects/connects on its own. Last weekend I hooked the boat to my wife's Tahoe and the lights work perfect. Can someone explain that? FYI they worked as they should on my 2014 also.

 

My flatbed (metal) trailer lights work with no problems when hooked to my truck.

 

Does your boat trailer have LED lights? I had to install resistors on my car hauler, because I had the same issue with constant disconnect/reconnects on my AT4. Pretty silly considering the trailer worked great with my 2016 Colorado that had far less tech. 

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TheElementalCashew Enthusiast

TheElementalCashew

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2 hours ago, wizard4878 said:

a little off topic but...

I have a 12' X 6' enclosed trailer,  no battery on trailer,  and noticed while I was parked, with the trailer hooked up that the tail lights would flash about every minute or so, none of the other lights seemed to flash.   Just once, then nothing for about another minute, and again a quick flash.  My trailer tail lights are led, and all the rest of the marker lights are not, so it didn't seem to affect the truck battery,  but I thought it was a bit odd.

It's a security feature of the truck. Supposedly if the trailer is unplugged while armed the truck alarm will be activated. 

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drucker Enthusiast

drucker

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9 hours ago, TheElementalCashew said:

 

Does your boat trailer have LED lights? I had to install resistors on my car hauler, because I had the same issue with constant disconnect/reconnects on my AT4. Pretty silly considering the trailer worked great with my 2016 Colorado that had far less tech. 

Is it because the trailer is aluminum? My metal trailer works great. Both trailers have LED lights and I wired both trailers the same way. 

 

Did you put a resistor on each wire?

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d61mccarty Enthusiast

d61mccarty

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Just a follow up to the original problem. Since the ECM was replaced we towed the travel trailer many times without any issues. the truck runs flawlessly. I am concerned about have the latest brake and brake pad wear recalls done with all the problems resulting from the update. They are now scheduled for Jan.20th. 

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