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Old 06-20-2016, 12:06 PM   #31
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Location: TN
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GM Transmission Update

Well I spoke with GM customer support and dealers are correct. If you add a transmission cooler to your truck and it goes out the warranty is void. Ouch! My truck has 29K on it and 100k warranty so no add on for me. I'd rather GM pay for it. Hopefully no issues until I am able to trade up.
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Old 06-20-2016, 01:54 PM   #32
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Check out this link: Keeping Your Mod's Warranty Intact - For Dummies

Further, under the act, aftermarket equipment that improves performance does not automatically void a vehicle manufacturer's original warranty, unless the warranty clearly states the addition of aftermarket equipment automatically voids your vehicle's warranty, or if it can be proven that the aftermarket device is the direct cause of the failur
Have the dealer show in the warranty that the aftermarket transcooler will void the warranty. Only way they can deny it if it is WRITTEN into the warranty. Verbal is not worth the air it takes to talk. I check my warranty and nothing in there forbids me to put on an aftermarket product.
Mark & Susan
Lehighton, Pennsylvania

'13 Cruiser Patriot 335SS - '13 Ford F150 SCREW - PullRite Superslide - Roadmaster Active Suspension
Member - "Northeast Crossroad Rally" & "Mason-Dixon Bunch"
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Old 07-23-2016, 12:31 PM   #33
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Chevy Silverado Trans Temp Update

Well my transmission temps kept running in the 200s and I couldn't get an answer from the dealer or GM. Each trip out they seem to run higher. For peace of mind I've traded up to a 2500 Duramax. Pick it up this Monday. As U guys have said you can't have to much truck. We didn't take our trip to Colorado. Lightening struck our house. A mess but insurance is covering it. Rescheduled trip for first two weeks of September. I don't forsee anymore truck issues.
Thanks for all your advice!
Dennis and Roxanne
2016 Sunset Trail ST300RK
2016 Duramax CC 2500
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Old 07-23-2016, 02:02 PM   #34
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Good move, and congratulations on the Duramax. I drove mine to work a couple of days last week and made it a point to check the transmission temperature. The temperature here was around 90, and the transmission temperature was 131.

2013 Silverado 2500HD LTZ CC 6.6L Duramax Diesel
2014 Sunset Trail SF270BH
Holly & Buster, mini Dachshunds
2016: 1 trip, 3 nights in 1 state, 316 miles
2015: 5 trips, 18 nights in 3 states, 2707 miles
2014: 5 trips, 14 nights in 3 states, 2426 miles
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Old 07-23-2016, 05:28 PM   #35
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Traveling in Montana today up/down 6% grades for a good part of it & my trans never got over 179. You won't regret getting the Dmax & congratulations.

Danny & Linda
Fulltimers since '08
2013 Redwood 36FB (FOR SALE)
2013 GMC Denali DRW
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Old 07-23-2016, 08:59 PM   #36
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Transmission Temp Chevy Silverado

Wow nice truck, You will not be sorry.
I think it's a lot of bull re:cooler/warranty.
I had a cooler installed by a Dodge dealer last year, in my Ram 1500 never a mention of warranty. I still operate that truck towing camper on occasion.
My other truck is the 2015 2500 is 6.0 gasser 410 gears, and as stated earlier posts I run 135-145 max.
I'm taking another Trip tomorrow and will try to remember to view while in reverse.
Congrats again,
Bowhunter and Linda
2012 Zinger ZT 26BHS
2015 Silverado 2500 HD 4x4 6.0 Gasser
1995 Ram 1500 4x4 5.4 Gasser/Hunt Truck (cherry)
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Old 08-24-2017, 09:35 PM   #37
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I have a 2016 GMC Sierra SLE CC 4x2 with a 5.3 and my tranny will hit 210 215 up long hills towing around 6000 pounds. Average temp on tranny is 190 after warming up. I pickup my 18 Sunset trail 271 RL this Saturday it weighs 5500 dry. So this will be interesting to watch the tranny temps
Thank You
2018 Sunset Trail 271 RL
2016 GMC Sierra 1500 5.3
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