Suburban or Denali XL?

[kses123]

Denali's do not have 4L80E. They have 4L65E.

 

[Cerberus66]

Denali's do not have 4L80E. They have 4L65E.

I didnt know that, I thought all 6.0 got the 80?

here is a good article on the 4l65E vs the 60

http://www.carcraft.com/techarticle...4l65e_gm_transmission_conversion/viewall.html

 

[kses123]

Only the 2500 models of the Suburban and Yukon got the 4L80E.

 

[bd1980]

Thanks for the correction. So according to that article, all 1500 after 2001 is the 4l65? Are they any better (reliability)?

 

[Cerberus66]

Thanks for the correction. So according to that article, all 1500 after 2001 is the 4l65? Are they any better (reliability)?

I have never seen any problems with them, they commonly put them behind hotrods etc.

Service and go. The article shows that the upgrades are typical reliability upgrades, LS based motors are strong as hell. SO I would have to assume they work pretty darn well.

I have always been taught to keep your tranny cool and they will last for a very long time behind a standard street driven vehicle.

Once you start adding HP and and making a binch of full throttle shifts (abuse according to GM) they will bomb.

 

[DeepSeaFish]

It's all personal preference really. Think about what you're going to be using it for primarily. I chose the Denali simply because I pull a boat and I love the extra power and extra amenities the Denali has to offer. I've pulled my boat with a 5.3 and it just can't hang with the 6.0 and burned more fuel. In addition, my old '04 F150 crew cab with the 5.4 pulled better than the 5.3. Both are great vehicles with respectable drivetrains. Biggest issue I've seen personally with a 5.3 is they've been known to go through alternators quicker than usual. Know someone who has an '04 with the 5.3 and 140k on it and he's on his 3rd one! But not all will experience this. If you're towing over 3500-4000 lbs, then get the Denali for sure! Better ride when towing to.

KSES123, nice to see someone from the same area.... Nice truck btw!

 

[bd1980]

Thanks, I'm just gonna have to be patient. Barely got out of my truck to look at the Denali at the dealership it was at and was looking at a nice run in the paint from crap bodywork (I used to do body work) walked around and could tell over half of it was not original. No thanks. Oh well, at least mine is nice and I'm happy with it, just need more room lol.
The search continues...

 

[chacho44]

Pm'd you. I'm selling my 03 ESV if your interested

 

[tx01tahoe]

I'm a big fan of the 6.0, I say go with Denali

 

[1Agerry]

Welcome to the Forum!