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Help buying new truck

Lfod1836
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redwngr Senior Enthusiast

redwngr

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17 hours ago, Lfod1836 said:

It did not come with tow mirrors, I added them later. NHT is not one of the codes in the glove box. But GU6 is on the list which is the 3.43 diff. So it must have also come with another package other than max tow.

 

 

GM RPO Codes – Factory Identification Labels and Interpretation
RPO Code Description Ratio
GU3 Axle Rear 2.93
GU4 Axle Rear 3.08
GU5 Axle Rear 3.23
GU6 Axle Rear 3.42

If it's an 8 speed, with 3.42, and not NHT then it might be a unicorn...

 

There was a LOT of discussion about the ratios and how trans and diffs were paired when the 8 speed was introduced. 

Ratio didn't change for Z71.

 

GU6 was standard with 6 speed, and GT4 3.73  was the NHT ratio for the 6 speed

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JimCost2014
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ShotgunZ71
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My 2020 Silverado 2500HD pulled my 9500lb TT great and returned around 8.5 mpg. Now, it tows my 42', 14,300lb 5th wheel and does fine with that as well. I'm around 7.5 mpg towing that, vs the 8.5 towi

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Lfod1836 Enthusiast

Lfod1836

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10 hours ago, redwngr said:

If it's an 8 speed, with 3.42, and not NHT then it might be a unicorn...

Guess I have a unicorn..

 

image.png.10940157a3c24d55c5eb8a855df51fcc.png

 

M5U = 8 speed trans..

GU6 = 3.42 Diff

 

Edited by Lfod1836
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gearheadesw Senior Enthusiast

gearheadesw

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On 11/13/2019 at 9:40 PM, powerhaulic said:

I had a '17 NHT maxtow 6.2, pulled 8800# TT, NY to FL couple times a year. Did the job well and was a blast to drive when not towing too.

Traded for a 2500 Duramax Denali, it didn't even know that trailer was back there.

Then traded for a fifth wheel........had to air bag and increase tire load ratings........

Now traded for 2020 3500 AT4, It has a nicer ride than the '18 Denali did......

 

Catch where this story is going..........go drive a 3500

 

 

You are going to buy a bigger trailer now.....?

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