2002 Yukon, 140k miles, Fixing up over time

[Countryboy07]

Very nice progress. Makes me feel really lazy on some of the projects I've been putting off on the Wifes Yukon. Keep it up!

 

[tgui]

Very nice progress. Makes me feel really lazy on some of the projects I've been putting off on the Wifes Yukon. Keep it up!

I have no kids and plenty of time. ;-)

I did however change the oil. I love my try truck but she gets what's on sale. I've also been battling lifter tick thats bad when cold. I added lucas oil treatment. Oil pressure went up a bit and so far no more tick!

I know I could run thicker oil but cheap oil plus Lucas seems to do pretty good. 146k miles on the engine BTW.

 

[tgui]

Got a 90 amp harbor freight flux core welder, flat iron, angle iron and did my best to make ****** welds. I think it will hold. I whacked it with a hammer a couple times and it held. I know the basics in my head but man, respect to pro welders.

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[tgui]

I redid, created new and filled in the gap. OK, so I was looking for excuses to weld.

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OK I still suck at welding. I'm pretty sure this will hold together.

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Its been hot and humid here. I had some drips from under the dash and thought I had a partially plugged ac line. I smelled mildew today, removed the floor mat and the carpet was soaked! I sucked up about 3 cups of water. I found the ac drain while under the truck, stuck a wire in it and took a goddamn shower. Soooo much water came out.

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[tgui]

Sanding, grinding and chemicals later, I have the 4l80e cross member almost done. What a ton of dirt and rust. This thing was in a junk yard for ages.

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First coat of paint

 

[tgui]

I got two new mods. First was $20. The other $650, and wifey doesn't know!

I've been wanting to clean up the shifts for a while on the 4l60e, even though its getting ripped out.

Today I installed a corvette servo. There are a ton of howtos out there. It took me a couple hours because I was stupid. I did however bend the heat shield out of the way over the passenger CAT to help get things in and out.

The shifts feel quite a bit firmer. I did suspect that the ECU mandated torque pulling on shifts caused part of the new firm/jerk on shift since while the new servo was making the shifts faster, the same timing delta applied. So remember physics? First derivative of velocity is acceleration, second derivative of velocity is impulse, or rate of change in acceleration. This faster shift (delta T) with the same total loss of power/speed from torque management caused a higher impulse (also known as jerk), or what I sound like now!

For $20 I recommend this upgrade!!!
Pics of parts.


Looks like a metal hamburger....


$650, full tuning suite. I wrote my own tuning suite, but don't have time to hack communications, maps and other shit with the Delco ECU. I gots real work to worry about!



I found a reputable 87 octane map, reduced shift torque loss, upped timing and leaned out the fuel a tad. I still need a wide band sensor.

WOW!

She ain't super fast, but she moves a ton better than before!! Power doesn't fall off on shifts, shifts are smooth and firm, and the power just grows with RPM! I'll have to log a ton to verify but so far I'm happy

I converted my old Macbook to a Windows 7 machine (removing Linux). Mac OSX is ok, not my fav, Linux first.



So when is someone else going to post in this forum? Its sooo quiet around here!

 

[JesusArTorres]

I think we're all just trying to keep up with what you're doing or jotting stuff down.

 

[tgui]

I think we're all just trying to keep up with what you're doing or jotting stuff down.

Yeah... Wednesday hits, I get bored at work sometimes and in down time see what I can work on for the weekend.

My wife and I work at the same place (she is 50 feet from me) so that buys me a ton of weekend alone time... ??

 

[aaron1977]

Must be nice! I wish I had that. Keep up the good work!

 

[TheAutumnWind]

I recently did the vette servo. Excellent use of $20

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No hptuners for me though

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