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01-20-2022, 06:03 PM #11
- Join Date
- Feb 2018
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- Northern California
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Bouncing from Elkhart to Phoenix, those brakes are broke in. Delivery probably used the trailer brakes exclusively on those descents. It's a known problem by GD.
Paul, Sue & Wonder Dog Zane
'18 Solitude 310 GK
"15 F-350 6.7, DRW, CC
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01-20-2022, 07:56 PM #12
- Join Date
- Jan 2022
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- Arizona
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GD has authorized a mobile tech to come check it out, including the onsite fees. I bought new so I'd get a warranty. May as well use it, even though I'm the type who loves to fix his own stuff. I'll be doing a bunch of mods myself but since the brakes are kinda important, I'm gonna pass on doing this as my first DIY job and leave it to the professionals...
I'll post an update tomorrow evening with findings.
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01-21-2022, 08:46 AM #13
- Join Date
- Oct 2020
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- Southern Arizona
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My brakes were awful when I picked up mine. I had it back twice to my dealership and asked them to check and adjust the brakes. They did not adjust them, and their "check" was to pull the breakaway switch. I finally bought a brake spoon and adjusted them myself. I do it about every 4000 miles while on the road. It's easy to do.
Mike & (RIP Karen)
2021 Imagine 2600RB
2011 Toyota Tundra 5.7 RW, Tow Package
Husky Centerline WDH
Champion 2500DF, Prodigy P2
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01-21-2022, 09:41 AM #14
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01-21-2022, 10:40 AM #15
- Join Date
- Oct 2020
- Location
- Southern Arizona
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Mike & (RIP Karen)
2021 Imagine 2600RB
2011 Toyota Tundra 5.7 RW, Tow Package
Husky Centerline WDH
Champion 2500DF, Prodigy P2
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01-21-2022, 12:46 PM #16
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01-21-2022, 04:42 PM #17
OK thanks. I'm about 4K miles since my last adjustment so probably about time.
Looking forward to hearing what @uwskier finds out about his brakes. GD seems to be pretty serious when it comes to these kind of issues under warranty.2020 Reflection 273MK
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01-21-2022, 07:45 PM #18
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- Jan 2022
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- Arizona
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UPDATE: Mobile techs came out and pulled off all drums. There was no grease splattered about the drums, which was a good thing. However, it appears the shoes were never properly burnished. The centers of the shoes were completely glazed and the edges of the shoes showed to be in like-new condition. Technician said it looked like they'd been badly overheated. I reckon @Gronk1 is correct that transport was using the trailer brakes on the descents around ABQ and PHX. Anyways, they re-surfaced the shoes and cleaned up the drums. I'm heading out tomorrow to find some country roads where I can re-burnish the shoes per the Lippert manual. I'm hoping to get a good mating of the surfaces after several heat cycles.
The other thing they noticed was that my brake controller will put out 14v when set to max boost and actuated via the lever, but only about 3-4 volts when the brake pedal is depressed with the truck parked. But I think this is by design with a proportional brake controller. If the internal accelerometer isn't sensing decelerating force, it won't put out full voltage, right? At least this is my understanding of how these things work (Tekonsha P3).
Also, the factory left one of the four dust caps off. I only have three dust caps. That's annoying.Last edited by uwskier; 01-22-2022 at 07:34 AM.
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01-21-2022, 08:13 PM #19
Glad you got resolution but sad to see the reason why. Definitely annoying, especially with ac simple thing like the dust cap. Maybe it fell off with one of the transporters?
Hope all is well on your drive tomorrow.
Bill2019 GMC 3500 SRW Sierra Denali Duramax
2020 Reflection 315RLTS
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01-22-2022, 06:55 AM #20
Breakaway Switch Question
Today, 11:24 AM in Axles, Brakes, and Suspension