A POSITIVE COMMENT AND PRAISE FOR CHEVROLET & GM!
HooRaaaay! My 2020 Silverado w/3.0 Duramax is utterly fantastic! I connected trailer and all the lights, turn signals, brake lights, Trailer Brake settings and all WORK FINE!!! The truck "sees" everything, and no problems.
I know the trailer weighs 4200# empty. I have converted a 7'X14' cargo trailer to toy-hauler (ATV, Ural Motorcycle, std motorcycles, bikes, 12' Fold-Up Flat Boat-FOLBOAT)+ camper with the usual stove, sink, small toilet-shower room, fold-up (like Murphy) bed, TV, cabinets, and shelves. The heaviest motorcycle is 788#. I didn't put any of the "toys" inside, but I went for a test-spin in my area.
I live in foothills, so immediate left up the connecting street goes up 500' and a 2 mile circle. The 3.0 Duramax did not even notice the weight, simply amazing! Power is awesome! Sure it makes more noise/sounds and mpgs dropped to 14, but that was all hills. I expect it will be better on a long haul to fishing/camping areas via some highway speeds. Almost zero noticiable sag in the back end trailer hitch, I need to adjust the tow/receiver thing up/down to correct for a level trailer.
I had a 2018 Colorado 2.8 Duramax. It was/is an excellent truck in my opinion. Three problems, 1) no tow mirrors available for it, 2)could not see around the sides of trailer, 3) a "short-bed" is too damn short, and hardly a "bed". Other than that, it did fine, but I admit that hauling the toy-camp trailer was a lot of effort, do-able, but really not comfortable for me. So last month I traded for Silverado Double-Cab, Duramax, which gets me almost the same length, but a longer "bed". The Silverado is bigger and does the same job A LOT better. Works for me.
Forums have so many complaints and problems that I was Very worried I would have computer/re-flash/electrical problems. So far, no goofy electrics and rear solid window does not leak. It snowed 6" here on Sunday 24th, the next day was 68F. Truck did not care about the snow did justfine up my 200 yard driveway hill.
If anyone has suggestions on what to choose "gain" for trailer brakes, I would appreciate suggestions. Thanks in advance. It is nice to know that Chevrolet DOES build a good product, at least I chose a good one. Thankful, amen.
YMMV