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Anyone running a 14/15 sierra 5.3/3.42

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Old 12-27-2014, 05:44 PM
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Originally Posted by 88242LS
Update, found a set of the 6" boards on craigs, bought a set of mudflaps, installed both today, gotta get a tonneau and probably upgrade to the A/T 20's eventually






Nice! I have mudflaps on order! Did you go with oem or aftermarket? You will love the mudflaps now that you have boards. My boards are always covered with dirt and mud thrown up from the front wheel!
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Old 12-27-2014, 05:45 PM
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Originally Posted by 88242LS
Update, found a set of the 6" boards on craigs, bought a set of mudflaps, installed both today, gotta get a tonneau and probably upgrade to the A/T 20's eventually







Your truck looks good with the boards, posting pictures like that is going to cost some of us more money in accessories.
I just put a Truxmart tri-fold soft tonneau on, wife got it for me as a Christmas gift, I'm definitely liking it. Installed in 10 minutes and only weighs about 6-7 pounds. Wish it covered the entire top of the bed rails, but I'll survive.

What mileage are you seeing with the 18's? I have the 20's and I'm getting 17.x average over the last 1500 miles, with a best of 22.6 on the computer's 50 mile calculator.

Last edited by Speedracer29; 12-27-2014 at 05:50 PM.
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Old 12-27-2014, 06:43 PM
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Originally Posted by Speedracer29
Your truck looks good with the boards, posting pictures like that is going to cost some of us more money in accessories.
I just put a Truxmart tri-fold soft tonneau on, wife got it for me as a Christmas gift, I'm definitely liking it. Installed in 10 minutes and only weighs about 6-7 pounds. Wish it covered the entire top of the bed rails, but I'll survive.

What mileage are you seeing with the 18's? I have the 20's and I'm getting 17.x average over the last 1500 miles, with a best of 22.6 on the computer's 50 mile calculator.
Not sure what I'm gonna do with the tonneau yet, loved my truxedo low pro gt on my 05, might go back to it, after 600 miles my mileage has been 17 average and 22.5 on the other, think I have it set for last 25 miles, so mileage is about spot on with u
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Old 12-27-2014, 06:44 PM
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502ss I went with OEM flaps they fit perfect
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Old 12-27-2014, 06:56 PM
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Originally Posted by 88242LS
502ss I went with OEM flaps they fit perfect
I did a lot of looking and also settled on the oem flaps!
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Old 10-05-2015, 06:56 AM
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Anyone have the dreaded 75 mph vibration in their 14/15 Silverado or Sierra? I just bought a 2015 Sierra SLT 4wd Crew with the max tow package. Been in twice now and gotten road force balance and 3 new tires but the problem still remains. Seems to be a ton of complaints out there none of which have a proven fix.
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Old 10-05-2015, 04:07 PM
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MIne is smooth- 2015 HD. Some people have it. Have them look at the drive shaft also. Try running lower psi in rear tires.
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Old 10-06-2015, 09:12 AM
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No issues on my 2015 Silverado double cab. Smooth as hell
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Old 10-06-2015, 05:01 PM
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Originally Posted by Gimme Fuel
No issues on my 2015 Silverado double cab. Smooth as hell
Same here!
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Old 10-07-2015, 07:11 AM
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I friggin love my new 15 Silverado 1500. I can't believe it actually tows better than the 03 Avalanche 2500 with 4.10 gears I got rid of. I was very weary going back to a half ton truck but it has done nothing but impress me. Extremely stable with my 7000 lb boat/trailer combo. It also gets the load up and moving actually faster than my old 8.1L with a strong tune. I run e85 fuel for the extra 25hp jump it gives over unleaded and also have a hypertech tuner installed. It is unbelievable how quick it is for a stock half ton truck. And the brakes are hefty too compared to older models and I don't even have the max tow package or anything. Just 3.42 gears, 5.3L and 6 speed trans.

These new series of half ton trucks are nothing like the 2013 and older models, much heavier and much more stable under load.

Last edited by Gimme Fuel; 10-07-2015 at 07:14 AM.
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