2006 suburban ltz 6.0 ?

I never realized that there was a 6.0 offered in a 1500 Suburban so I googled it. I found my answer on the first page. Chances are, this truck will tow much like the one that you owned back in 2012.

They offered the 6.0 in a higher hp version in the SS style 1500 series. I think the one found in the burb is the same as the truck. Should be 300hp and 360tq for that series which is gen 3.

What happened to your other Suburban? I thought you had an 8.1L 2500 in the past. I haven't been around here very often though to remember.

The HP number for the 6.0L in the 1500 Suburban LTZ is 335 HP, which is consistent with the HP rating for the LQ4 truck motor also found in the 2500 Suburban of the same year. The heads are aluminum though, unlike the 6.0L truck motor of 1999 and 2000, which had cast iron heads.

The LTZ is unique in this respect, as GM's other two "kitchen sink" half ton rated luxury SUV's of the same year sported the higher HP LQ9 version (different heads, different pistons, higher compression ratio) of the 6.0L, rated at 345 HP, as found in the GMC Denali's and Cadillac Escalades.

Nevertheless, the LTZ still has the lighter duty NV149 AWD transfer case, rather than the NV246 part time auto trac transfer case. The transmission is the 4L60 (or 4L65) rather than the 4L80 (or 4L85), and the ring and pinion gears in the differential are smaller as well.

However, the rear suspension is 5 link coil, perhaps with air assist if so equipped, as opposed the the link springs of the 2500 Suburban.

There might be twin electric cooling fans for the 1500 LTZ, rather than an engine driven viscous fan clutch as found in the 2500. That could be one reason for the slight bump in horsepower in the LQ4 found in the 1500 LTZ, at 335 HP, versus the LQ4 found in the 2500 Suburban, at 325 HP.

Some folks consider the 2006 and earlier 6.0L engines as more desirable... since they predate the various displacement on demand, variable valve timing, and active fuel management schemes that GM began putting into small block truck and SUV engines beginning in 2007 model years. I suspect this was more of a concern during the teething pain phases of each of these technology implementations. Perhaps all of these concerns are mute in new engines today, but they were complained about a lot in 2007-2011, for whatever that may be worth, if anything.

kw/00 wrote:
They offered the 6.0 in a higher hp version in the SS style 1500 series. I think the one found in the burb is the same as the truck. Should be 300hp and 360tq for that series which is gen 3.

That 6.0L in the SS style 1500 truck was called the "Vortec Max", and was an LQ9 motor (different pistons, flat top style, higher compression ratio, 10:1, higher octane fuel preferred).

By contrast, the 1500 Suburban LTZ had an LQ4 motor.

Yes I did have an 8.1 yukon . Got a constant 11 mpg , but towed like a boss! Sold that one and bought a 98 6.5 diesel and went up to 18 mpg. Miss all my old trucks. I did try an excursion, but after driving suburbans for almost 20 years, the excursion just felt awkward in handling and was not near as comfortable to drive everyday. I did like the 7.3 diesel, but cold weather was not good on that truck. I was contemplating a 3500 express van , but was not happy loosing foot room for long trips.
My current 2009 is nice , but at 330,000 miles have been thinking about leave it alone ?? Put in fresh motor?? Or move into an older lower mile clean truck to avoid car payment.
I do feel the best route would be keep my 2009 and have money set aside for any major repairs. Or??? Find me a duramax crew cab, but I sure would miss all the extra room I have in my burb.
I drive the wife crazy, but it what I really love, and she loves all the camping trips in comfort!??

I wonder what the fuel economy difference would be with the 6.0L AWD vs the 5.3L with part time 4x4. I find the fuel economy on my 2001 Yukon 5.3L to be pretty good.

Personally I think you should go a little newer and find a Yukon XL Denali with the 6.2.

I have had both. My Yukon pulls my 7000 pound boat equally as well in the mountains as my 8.1 did.

And for MPG, the Yukon gets almost as good MPG pulling my boat as the Burb did not-towing.

I had a 6.0, it towed well.

deltabravo wrote:
LTZ trim level wasn't invented until the GMT900 body style.

If what you are suggesting as quoted above were the case, this thread would never have been started by the OP. Give the OP some credit.

The fact is, that in model year 2006, the last year of the GMT800 Suburban, Chevrolet released a special edition Suburban with the RPO LTZ package, which included a chrome rail version of the Z71 roof rack, a unique nerf bar type running board with stepped depressions at the doors, a 6.0L engine (in a half ton chassis, which was never available in the Chevrolet Suburban 1500 until this 2006 LTZ edition), and a few other unique details to round out the package...such as the round fog lights and fairing from the Z71 package, chrome door handle pulls, and unique wheels.



Google it. There is no reason to make this stuff up.

I'd rather have a 6-spd with the 5.3/6.0L. Find something with the 6.2L, Yukon Denali or Escalade. There are lots of them on the market. Or keep looking for a clean 2008-2013 2500.