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@  sky72lark : (07 August 2020 - 12:38 AM)


@  dezldave961 : (29 July 2020 - 04:06 AM)

Just became a moderator on 3800Pro, so that's fun. I know it's gone thru a couple hands since Intense got sold, then that guy sold the forum. Not sure what that'll help, but it's something.

@  ejguillot : (26 July 2020 - 02:47 AM)

Glad to hear it. Would be a tragedy for us remaining owners to lose the knowledge in these forums.

@  dezldave961 : (12 July 2020 - 01:55 AM)

Hosted a buddy and his family for cookout... Ya, not alot on forums lately. Just keeping the lights on.

@  ejguillot : (08 July 2020 - 03:16 AM)

Everyone have a good 4th? This place is a ghost town...

@  ejguillot : (10 May 2020 - 10:43 PM)


@  dezldave961 : (07 May 2020 - 04:14 PM)

Got bored and started making build video...

@  dezldave961 : (04 May 2020 - 04:05 AM)

I need to hunt down the little black trim bar that's at the top edge of the GS rocker panel cover, for driver's side between rear door and wheel well.

@  ejguillot : (03 May 2020 - 02:42 AM)

I've been on there too. I hope this forum is kept open, there's too much info to allow it to be lost!

@  dezldave961 : (24 April 2020 - 10:25 PM)

I've been monitoring GrandPrixForums and 3800Pro (don't have FB)... also hopped on TurboBuick, but 99% GN chatter from boomers

@  ejguillot : (19 April 2020 - 02:33 PM)

Everyone at home, plenty of free time.

@  ejguillot : (19 April 2020 - 02:33 PM)

Nobody posting? Why not?

@  ejguillot : (27 March 2020 - 05:19 PM)

Congrats on the Comp G GTP!

@  crossout : (25 March 2020 - 05:49 PM)

Wow this thing has died off I just myself 05 Comp G 3 weeks ago way different than my 2000 regal gs that I had it rusted out to hell strunt towers. :D :D

@  dezldave961 : (20 March 2020 - 04:18 PM)

Pulled turbo engine, prepping MP112 setup... also doing some work-from-home stuff

@  tpivette : (19 March 2020 - 08:57 PM)

So far so good. Still working, fortunately.

@  ejguillot : (16 March 2020 - 03:46 PM)

how's everyone doing? With coronavirus and all that?

@  tpivette : (25 February 2020 - 02:35 AM)

Just got my GS back on the road. Wife is pressuring me to sell it... don't know if I want to or not

@  monte0 : (17 February 2020 - 05:04 AM)

Popped on to see how things are. Been a couple years...

@  ejguillot : (14 January 2020 - 10:36 PM)

Hope the new year is treating everyone well..

- - - - -

I'm at a loss. L26 related not Regal

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2 replies to this topic

#1 gojo83


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Posted 23 April 2019 - 05:11 AM

So long story short Christine the GS tried to kill me. Got a new 07 Lacrosse. L26/4t65e non HD, think Lesabre. Ok this is my first trip into dbw setups. Little background I live at 6100 ft,everything is either all up hil or all downhill from me. So took the car on a quick errand to 4500 ft and back to 6100. Car saw very frequent 4 to 8.5+ knock. The only "mod" I've done is 180* tstat and OEM plugs. I looked to try and read the tune tonight it reads as a 2005 lacrosse but is corrupt and cant be opened. Car has 91k I'm debating if the trans is causing the issue. Going up a grade it will not kick down into 3rd and kr spikes to 8.5 to 8.75 if I unlock the converter manually it will finally kick down and kr settles to the 4 range. Mileage is 20ish hwy.

It being an 07 fuel filter is in tank and technically non serviceable
Computer is non tunable
Car has a 2 yr warranty and I know as soon as that is over is when the trans will shell lol.
I'm grasping for anything, any idea how to either kill it under warranty or prolong life and bring back mpg and power that 9* of kr destroys.
Gut the air box?
Port an upper manifold and lower?
Have a 2.5 in dp fabbed up?
Put in a shift kit?
Fluid and filter swap on the trans?

Any ideas or stories u have heard on the new cars would be appreciated. It wont be a bad car once the kinks get worked out. Its already the favorite go to car for gatherings.
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#2 Fast86GN


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Posted 26 April 2019 - 01:59 AM

Greg, I'm no expert by any means but why is the PCM not tuneable? Any codes in history? Do you what your fuel pressure is?

Edited by Fast86GN, 26 April 2019 - 02:00 AM.

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#3 gojo83


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Posted 06 October 2019 - 10:37 PM

Little update, it was a bad batch of plugs causing the issue. New autolite plugs and it works alot better, trans is getting worse. New Don Rome stb brackets and front and rear. Next minor upgrade is impala SS dual piston calipers, tubular trailing arms and 9c1 sways. Might spring for a plog too. Looks like a dp would have to be a custom job too.
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