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Did dealer erase my overkill tune?
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slowsol
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PostPosted: Wed Mar 14, 2012 6:43 pm    Post subject:  Did dealer erase my overkill tune? Reply with quote

I just picked up my 04 SS from dealer after some warranty work. I had the gauge cluster replaced along with a new MAP sensor. Upon leaving the dealer I noticed the car felt funny. Shifting very soft, running hotter, and now a P0140 code. Did they wipe my tune when they programmed the new cluster?

I called them and my ticket writer said no way, but to check back in the morning when the tech gets in and he will ask him what he did.

I'm really worried they loaded a stock tune and I will have to get another PCM from will.
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Pitch Black SS
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PostPosted: Wed Mar 14, 2012 7:03 pm    Post subject:   Reply with quote

well, the cluster gets programmed outside of the vehicle I believe. But they may have reflashed the PCM with the new MAP install.

Always best to state DO NOT FLASH THE PCM when getting work done with a custom tune. If they dont follow your directions and flash the PCM, you may be able to hold them responsible for a replacement

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k6ng6r00
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PostPosted: Wed Mar 14, 2012 8:05 pm    Post subject:   Reply with quote

but wouldnt a tune like that void the warranty

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slowsol
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PostPosted: Wed Mar 14, 2012 8:09 pm    Post subject:   Reply with quote

It's an extended warranty. The car went in for the cluster acting goofy. Boost gauge sticking and tach not reading correct on highway. The new cluster fixed tach problem but I guess boost gauge problem was caused by bad MAP sensor.
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nightryder
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PostPosted: Wed Mar 14, 2012 8:12 pm    Post subject:   Reply with quote

P0140 is an O2 sensor code, if your O2 is bad (or was unplugged for some reason) you will definitely notice a difference in driveability.

How much hotter is it running?

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slowsol
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PostPosted: Wed Mar 14, 2012 8:37 pm    Post subject:   Reply with quote

It's around 205. Before it never got much above 180. Shifting is very sluggish also. I'm not running a rear o2 or cat so I get the code, but the overkill PCM deletes that code right?
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PostPosted: Wed Mar 14, 2012 8:42 pm    Post subject:   Reply with quote

slowsol wrote:
It's around 205. Before it never got much above 180. Shifting is very sluggish also. I'm not running a rear o2 or cat so I get the code, but the overkill PCM deletes that code right?


P0420 is the rear O2 code

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bigdog60
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PostPosted: Wed Mar 14, 2012 8:57 pm    Post subject:   Reply with quote

Pitch Black SS wrote:
slowsol wrote:
It's around 205. Before it never got much above 180. Shifting is very sluggish also. I'm not running a rear o2 or cat so I get the code, but the overkill PCM deletes that code right?


P0420 is the rear O2 code


Oh Dear.....that don't sound good....I think you got reflashed Crying or Very sad
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IffyG
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PostPosted: Wed Mar 14, 2012 9:38 pm    Post subject:   Reply with quote

Yeah... the combo of a P0420 and running at near stock coolant temps is a dead giveaway that they reflashed the PCM.

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nightryder
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PostPosted: Wed Mar 14, 2012 9:41 pm    Post subject:   Reply with quote

IffyG wrote:
Yeah... the combo of a P0420 and running at near stock coolant temps is a dead giveaway that they reflashed the PCM.


He's got P0140, which can be either 02 IIRC. If the rear 02 is missing I don't think P0420 will trip.

But yeah, the dealer reflashed the PCM.

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PostPosted: Wed Mar 14, 2012 10:12 pm    Post subject:   Reply with quote

Damn you young ones and your good eyes Geek Out LOL
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slowsol
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PostPosted: Wed Mar 14, 2012 10:45 pm    Post subject:   Reply with quote

Well s**t. I'm back to dealer in the morning to see what I can do. I'm super bummed because the car was running great and I'm installing my headers this weekend.
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slowsol
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PostPosted: Thu Mar 15, 2012 11:42 am    Post subject:   Reply with quote

Went to the dealer this morning and spoke with the tech. He swears he didn't flash the PCM for the new MAP sensor, but did say he had the battery unplugged for 2 days while he was waiting for parts. Would this have cause any issues?
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00impala123
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PostPosted: Thu Mar 15, 2012 12:08 pm    Post subject:   Reply with quote

That could explain you shifting, but like iffy stated, the other signs are a dead give away. He reflashed it and is just trying to avoid confrontation.

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PostPosted: Thu Mar 15, 2012 12:15 pm    Post subject:   Reply with quote

It will make it run different until it relearns everything. Check to make sure the front O2 is plugged in and the wires aren't screwed up.

I don't recall if the P0140 was disabled on my overkill tune, if you said it had the rear O2 removed when you ordered it then it should have been disabled.

Are your cooling fans working? It shouldn't be running that hot. It's behaving like a 180* t-stat with stock fan settings if it's running around 205*

Do you know someone with an HPT that can read your PCM? That will be the easiest way to tell. I don't think Will unlocked his PCM's for DHP so if you know anyone with a DHP and they can read it then it has been reflashed.

What's your WOT timing and KR look like?

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