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Discussion Starter · #1 ·
I heard some 1500 Silverados are Heavy Duty and some are not.

How do you tell if a truck is HD or not HD?

Mine is an LT and is supposed to have the towing package, so does that mean it's HD?
 

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352 Posts
Discussion Starter · #3 ·
OK, sounds like 1500HD is actually a 2500

I've never seen a half ton with 8 lugs.

Used to, towing package or HD simply meant different gear ratio and heavier leaf springs and maybe setup for the truck to control elcrtic brakes on the trailer
 

· TOTM
2013 Sierra SLE CC 2500HD Duramax
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1,083 Posts
Check your RPO codes
K5L HD cooling
KC4 HD engine oil cooler
KNP external trans cooler
Z82 HD trailering provisions
Z85 towing suspension/shock upgrade

Just because you have all this doesn’t mean you have an integrated trailer brake controller which is JL1.


2013 Sierra SLE 2500HD CC 4wd Z71 6.6 Duramax
 

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2021 GMC Sierra Denali CC 4WD Ultimate 6.2L
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· SilveradoSierra Guru
1999 Silverado LT LQ4 2006 Sierra SLT LBZ
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4,179 Posts
Well, towing package should be closer to heavy duty than standard package
not even close lol
The towing package just is that, a towing package. Does not make your truck any more heavy duty. The HD designation, which nowadays means nothing really since all trucks are HD, actually did mean you got a heavier truck that could tow heavier, bigger frame, different suspension, bigger engine and stronger trans.
 

· How-To Author
2015 Silverado LTZ 6.2 4x4
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4,624 Posts
Always fun at the parts store if you have one..
 
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· TOTM
2013 Sierra SLE CC 2500HD Duramax
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1,083 Posts
Well, my truck came thru a special program where it had HD equipment added to it and it was un credited... it's part of their performance shop add ons
View attachment 953772
I don’t know what this means? Can you explain?


2013 Sierra SLE 2500HD CC 4wd Z71 6.6 Duramax
 
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