2008 silverado 2500hd 6.0 vortec POWER!!

2008 silverado 2500hd 6.0 vortec POWER!!

Chris M Orrick Missouri

Waynesville, MO

#1 May 22, 2008
well i just want to say that i just got my first brand new 2500hd 3 days ago to replace my 2000 silverado 2500hd i cant belive how much more power these new 6.0 vortecs have in them i know your not suppost to pull any thing for the first 500 miles of buying a new truck but i had to anyways i pulled 7 tons to rock the other day and it made my old truck feel like it was a half ton truck and i thought my old one pulled good! i would love to see how the new duramax pulles because they clame it is the best so far?
jdmurphy

Coppell, TX

#2 Sep 4, 2008
i bought a 08 6.0 2500hd in july.
the truck has no power and gets bad mpg (9).
had a 02 6.0 2500hd and it has more power and better mpg (14).
had a number of dealers look at it and no luck, no code no problem.
what happen to being a mechanic.
we have found that the truck in manual mode, 6th gear gets 15mpg 50mph 40%load.
truck in automatic mode in the same gear at the same speed showed 9mpg at 70% load.
all on a long straight no hills road.
salesmen have admitted to a possible problem but dealer and service dpt and gm customer service say no code no problem.
i have owned many gm trucks in my buisiness and personal and this by far the worst i have been treated.
ZACH

Maple Grove, MN

#3 Feb 23, 2011
ANYONE UP
ZACH

Maple Grove, MN

#4 Feb 23, 2011
I HAVE A 2001 2500hd AND THE SERVICE ENGINE LIGHT BLINKS AND IT MISSES REALLY BAD LIKE TRUCK HAS HALF THE POWER IT SHOULD ANY IDEAS
ryan

Rio Rancho, NM

#5 Apr 2, 2011
I have a 2002 chevy 2500HD I have the same problem but mine did it when i was puling a hill with the truck turning about 4000 and the loss of power came first then the blinking check engine light but no codes were set. I cant find a solution to the problem either i have changed all the filters the plugs and wires.
JJW

American Fork, UT

#6 Sep 11, 2011
ryan wrote:
I have a 2002 chevy 2500HD I have the same problem but mine did it when i was puling a hill with the truck turning about 4000 and the loss of power came first then the blinking check engine light but no codes were set. I cant find a solution to the problem either i have changed all the filters the plugs and wires.
I had a 01 6.0 and turned out the cats were plugged on the truck take it to a muffler shop and have them do a flow test in your o2 sensors
Anonymous

North Charleston, SC

#7 Jul 15, 2012
just bought a 2000 silverado with 6.0 vortec, engine light came on so i hooked my lil computer up and its shows a po420 and po300 codes any help with what it can be
BenZep

Phoenix, AZ

#8 Sep 1, 2012
jdmurphy wrote:
i bought a 08 6.0 2500hd in july.
the truck has no power and gets bad mpg (9).
had a 02 6.0 2500hd and it has more power and better mpg (14).
had a number of dealers look at it and no luck, no code no problem.
what happen to being a mechanic.
we have found that the truck in manual mode, 6th gear gets 15mpg 50mph 40%load.
truck in automatic mode in the same gear at the same speed showed 9mpg at 70% load.
all on a long straight no hills road.
salesmen have admitted to a possible problem but dealer and service dpt and gm customer service say no code no problem.
i have owned many gm trucks in my buisiness and personal and this by far the worst i have been treated.
word for word the best I can explain of whats wrong with my truck... we got from the dealer used... took it back shortly after and they say no code no fix... took to diff dealer, they said plugged cats.. fixed those... still same problem persists... no codes/engine lights... feels like a resistance on breathing/fuel...
Matt

Durham, NC

#9 Sep 4, 2012
I do apologize for the frustration caused by this issue. Please send an e-mail to socialmedia@gm.com and address it to me with your VIN#, name, and situation. I hope this is resolved quickly for you.

Matt

GM Customer Service
Byron Lamb

United States

#10 Oct 22, 2012
Well i have only had my 08 silverado 2500 hd 3/4 ton for 3 days but i start my new job next week with it i have read the comments from every one an im truly concern now about my decision just hoping for the best !
farter

Mesquite, TX

#11 Mar 31, 2014
I have a truck
wyne

Lancaster, TX

#12 Feb 6, 2015
I purchase a 08 Chevy Silverado in 2010.every thing was well until 2013.that's when check engine came on.had it put on machine an code p0121 came which throttle position sensor.replaced twice reset light but now it randomly pops on an goes of when it gets ready what's possibly my problem
gatorexmbelcher

Madison, WI

#13 Dec 12, 2015
My 2011 Silverado idles rough and seems low on power kinda slow on throttle response is this common
Jerry Rodriguez 83

Addison, TX

#14 Jul 24, 2017
I have a 08 tahoe with the 4.8L I was wondering if I could get a 6.0 and just plug and play or will it even work at all

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