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donjetman

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Safe to assume that 26MpG, is withOUT Lean Cruise enabled?
True
I'd love to give "lean cruise" a try. Never say never, but I'm a DIYer and don't have the skills/tools/time. Also, there's a lot of big hills, mountains and elevation change between TX & CO that might put a monkey wrench in a lean cruise tune?

I just received about $1,000 of front end parts for the Denali. Also got a new (smooth) valley cover, and oil pressure sender. Those are my next Denali projects.
 

Sam Harris

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True
I'd love to give "lean cruise" a try. Never say never, but I'm a DIYer and don't have the skills/tools/time. Also, there's a lot of big hills, mountains and elevation change between TX & CO that might put a monkey wrench in a lean cruise tune?

I just received about $1,000 of front end parts for the Denali. Also got a new (smooth) valley cover, and oil pressure sender. Those are my next Denali projects.
No knock sensors..?
 

Marky Dissod

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I'd love to give "lean cruise" a try. Never say never, but I'm a DIYer and don't have the skills / tools / time.
Also, there's a lot of big hills, mountains and elevation change between TX & CO that might put a monkey wrench in a lean cruise tune?
Many of us lack the time to do many of the things that others routinely handle over the course of any given day.
Some of us make our own coffee, some of us wrench on our cars, but it's totally ok to let others handle stuff like, say, pcm / ecm & tcm tuning. Most of us don't do our own dry cleaning, right?

To oversimplify down to a gist, whether a pcm can Lean Cruise or not, it simply canNOT enable much less activate unless the engine is, well, pretty much cruising. For example:
if towing, might only activate during decels, maybe? Unless the towed object has outlandishly low drag?
if accelerating BARELY enough for Miss Daisy to notice, it might only activate or stay active downhill?
if cruising in 4th, it MAY activate, and/or stay active, if you drive like you want / need OVER 18MpG.

Meaning, only got 22MpG once, nearly pulled my hair out 'cause I had to let nearly EVERYONE pass me.
I'd be able to spend LOTS more time in Lean Cruise with 4.10, or with 3.73 & 235/60R18, and drive more normally.
How I normally drive I NEVER see it - I have to consciously chill the hell out.

Lean Cruise is FAR more likely to be FAR more useful with lighter cars with less drag area.
The criteria are slightly tougher for a driver to stay in than V4 mode.
More gearing helps too, up to a point.

You never need to worry about it though. The redundant safeties make it far safer than V4 mode, is my point.
It just won't activate or stay active unless you are driving very gentle-like.
 

donjetman

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Many of us lack the time to do many of the things that others routinely handle over the course of any given day.
Some of us make our own coffee, some of us wrench on our cars, but it's totally ok to let others handle stuff like, say, pcm / ecm & tcm tuning. Most of us don't do our own dry cleaning, right?

To oversimplify down to a gist, whether a pcm can Lean Cruise or not, it simply canNOT enable much less activate unless the engine is, well, pretty much cruising. For example:
if towing, might only activate during decels, maybe? Unless the towed object has outlandishly low drag?
if accelerating BARELY enough for Miss Daisy to notice, it might only activate or stay active downhill?
if cruising in 4th, it MAY activate, and/or stay active, if you drive like you want / need OVER 18MpG.

Meaning, only got 22MpG once, nearly pulled my hair out 'cause I had to let nearly EVERYONE pass me.
I'd be able to spend LOTS more time in Lean Cruise with 4.10, or with 3.73 & 235/60R18, and drive more normally.
How I normally drive I NEVER see it - I have to consciously chill the hell out.

Lean Cruise is FAR more likely to be FAR more useful with lighter cars with less drag area.
The criteria are slightly tougher for a driver to stay in than V4 mode.
More gearing helps too, up to a point.

You never need to worry about it though. The redundant safeties make it far safer than V4 mode, is my point.
It just won't activate or stay active unless you are driving very gentle-like.
You may have missed it?
Lean cruise (lean burn tuning) was directed at my C5 Corvette that is light and and slicker than owl $hit. I posted a thread here on the subject last Dec.: https://www.tahoeyukonforum.com/threads/lean-burn-tuning.138636/
 

Marky Dissod

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You may have missed it?
Lean cruise (lean burn tuning) was directed at my C5 Corvette that is light and and slicker than owl $hit. I posted a thread here on the subject last Dec.: https://www.tahoeyukonforum.com/threads/lean-burn-tuning.138636/
Not sure if the 'vette in that video is using GM's Lean Cruise.
Think it's using a personally customized Open Loop tune that (actually) gets better results than Lean Cruise.

Is the 'vette in the video yours?
 
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swathdiver

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No knock sensors..?
900 knock sensors are on the side of the heads, not in the valley cover. We rarely change them out like you guys do.
Is paint work included, or is that just for the dent?
Just the dent. Another $100 for the bent hood to fix and another for a dent just below the side glass in the quarter panel.

He quoted for a paint correction and ceramic coating but will have to ask again for the details and decide whether or not it'll be worth it since we're planning to have the truck painted in a few years.
 

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