2008 Chevrolet Tahoe Hybrid support?

**Hotwire** · 06-20-2016

Haven't seen anything mentioned, is there support for this vehicle?

**Bill@HPTuners** · 06-20-2016

Are you able to read the ecm? Try E67A in the drop down if it doesn't automatically detect it.

**Engineer@HPT** · 06-20-2016

We have limited support for them. We can add a few parameters here and there for you but it is unlikely we'll ever add full support.

**Hotwire** · 06-20-2016

I'll grab my cable and see what I can get from it. Thanks!

**Chuck CoW** · 06-22-2016

I might have a customer's car (same one) to test it on. I was mainly looking for TCM support.... Some ecm stuff would be fun though....

Keep me posted.

Chuck CoW

**blackhaze** · 06-26-2016

I'm curious as what parameters you could possibly add for us, I just pulled the stock file for my wife's 2010 Yukon denali hybrid (6.0) and was wanting to disable dod/afm as well as disable the 6em electromagnetic suspension system up front.

**OldSkool69** · 08-03-2016

Originally Posted by Engineer@HPT

We have limited support for them. We can add a few parameters here and there for you but it is unlikely we'll ever add full support.

I read a 2009 Silverado and a 2011 silverado. I save the file and saw some mods that can be done like deleting cats.

Maybe take out the speed limiter.

If I buy the credits, can I delete the Cats? Can I write the ECM as normal?

**Bill@HPTuners** · 08-04-2016

at the licensing screen click no thanks and you can view what tables are available.

**Hotwire** · 08-07-2016

Sorry for the long delay, was finally able to get back on this. There aren't many parameters to edit when you do pull the tune. My tahoe acted funky for a couple days after connecting giving me ECM errors too.

I've attached the tune I was able to download and have a few questions.

When you go to read, you get an error and a lot of choices I'm not sure how to answer. I've attached a screenshot but was unable to capture the options in each pulldown menu, but was able to take pics of them. I'm assuming it's trying to read the TCM and Hybrid controller but those options aren't available. I know the 2ML70 transmission was designed/built by Allison, but the only Allison option is A40 or A50. I don't want to strand myself by choosing the wrong options and trying to read again.

2008_Tahoe_Hybrid-ORIGINAL.hpt Capture1.JPG

**Hotwire** · 08-16-2016

Anyone?

**greenfreek** · 08-30-2016

Originally Posted by Engineer@HPT

We have limited support for them. We can add a few parameters here and there for you but it is unlikely we'll ever add full support.

i will buy your product just if it was able to turn off AFM on my 08 yukon hybrid!
im burning oil and its due to afm ...can you guys help?

**Hotwire** · 09-06-2016

Pull your #7 sparkplug and see if it's carboned up from burnt oil. If so, it's the AFM relief valve blowing oil into #7 when it's shut off. GM has an oil deflector that mounts to the valve to divert oil into the pan instead of showering the cylinder bore and cause oil consumption. I'm having the same problem with mine, just did a tune up this weekend. There's a TSB about it but no recall. You have to drop the oil pan to install the deflector.

And can anyone answer my questions about reading the hardware?

**sonomaGTLS6** · 02-24-2018

Sorry for reviving an old thread but was the hybrid PCM support ever rectified? My 2011 Denali will be going out of warranty within the next year or so...thinking of playing around with some tuning on it after warranty is up.

**Bill@HPTuners** · 02-24-2018

same deal, limited support, read the file, view it to see if it has what you want. If so license it and tune away, if it doesn't don't license it and keep it stock.

**Hotwire** · 02-25-2018

Originally Posted by Bill@HPTuners

same deal, limited support, read the file, view it to see if it has what you want. If so license it and tune away, if it doesn't don't license it and keep it stock.

Originally Posted by Hotwire

Sorry for the long delay, was finally able to get back on this. There aren't many parameters to edit when you do pull the tune. My tahoe acted funky for a couple days after connecting giving me ECM errors too.

I've attached the tune I was able to download and have a few questions.

When you go to read, you get an error and a lot of choices I'm not sure how to answer. I've attached a screenshot but was unable to capture the options in each pulldown menu, but was able to take pics of them. I'm assuming it's trying to read the TCM and Hybrid controller but those options aren't available. I know the 2ML70 transmission was designed/built by Allison, but the only Allison option is A40 or A50. I don't want to strand myself by choosing the wrong options and trying to read again.

2008_Tahoe_Hybrid-ORIGINAL.hpt Capture1.JPG

I've attached the cable and asked for guidance. Next step would be to disconnect ecm and connect to straight bench harness for me..

**Bill@HPTuners** · 02-25-2018

What tcm does your application use? If you aren't sure don't select anything and simply read the ECM, not the TCM.

**sonomaGTLS6** · 02-26-2018

Thanks for the response - if I get a chance I'll take a look tonight as well.

**???** · 09-05-2022

old thread I know. but since we do now have some support for the hybrid 6.0. I have a question, if say someone did a cam swap to delete the afm but didn't want to use the Ackerson cycle late intake opening cam, but just normal one with good low end tq and give up a mpg. what would need to be adjusted in the tune for that? the ve table? or virtual ve whatever this ecm would have? I've already licensed mine to turn off the afm and adjust the speedo. but just wondering what I'd need to have for a cam swap? there is pe tuning table, which I'm guessing is wot but what about part throttle?

probably never any chance, but what these old trucks really really need to access to the hybrid battery cooling fan speed to temp. would make the battery last way longer at a little noise trade off

**Bill@HPTuners** · 09-06-2022

Originally Posted by ???

old thread I know. but since we do now have some support for the hybrid 6.0. I have a question, if say someone did a cam swap to delete the afm but didn't want to use the Ackerson cycle late intake opening cam, but just normal one with good low end tq and give up a mpg. what would need to be adjusted in the tune for that? the ve table? or virtual ve whatever this ecm would have? I've already licensed mine to turn off the afm and adjust the speedo. but just wondering what I'd need to have for a cam swap? there is pe tuning table, which I'm guessing is wot but what about part throttle?

probably never any chance, but what these old trucks really really need to access to the hybrid battery cooling fan speed to temp. would make the battery last way longer at a little noise trade off

E67A in these hybrid applications does not offer virtual VE or a VE table, the table set is very limited in these oddball ecm's.

**???** · 09-06-2022

Originally Posted by Bill@HPTuners

E67A in these hybrid applications does not offer virtual VE or a VE table, the table set is very limited in these oddball ecm's.

do you think it would be able to say self correct and be able to run OK on a stock for a non late intake closing cam, like you'd put in a non hybrid doing a afm delete kit?

the dodge version of this hybrid, the aspen. it didn't run that style of cam with this 2 mode tranny. while it is rated at a few less mpg, it's said to feel way faster around town with the electric motors adding tq, not just covering for the lack of low end with this valve timing.

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2008 Chevrolet Tahoe Hybrid support?