Functional question for Cam Crank Relearn for 2011 Silverado

[Tedybear315]

Hopefully a quick one and I won't get overly flamed.

We've got that PITA 2011 Silverado.

Now we will need to have the VVT deleted once we get the cam sensor issues worked out.

I get it- We'll need the HP tuner equipment to pull it off. Local guy quoted me $500 to do this procedure. I figure why give him that much money, when I can simply buy it and with some assistance-do this at our end.

Question- And I've had a lot of mixed answers when I search.

Can this device also do basic bi-directional functions such as the 'Cam Crank Relearn'.

Funds are already tight, and I'd hate to need to spend that much money on a tool and 'credits' (or give $500 for someone to do this for me). And then have to spend another $400 or so on a scan tool that can do that procedure.

Side Rant: Almost did pull the trigger on a decent scan tool. Then I checked and most of the good ones for about the 400 mark (and of course the professional ones) all have to be subscribed to for updates and to maintain full functionality of the tool. I can't get excited for a test bit that you buy and own-and then need to spend $100 or more each year to use it. Otherwise it turns into a glorified code reader.

So-- Can this device be useful for bi-directional use and programming the cam-crank relearn?


Thanks!!

Steve B-

[2xLS1]

HP Tuners scanner will perform a A CASE relearn (Crank Angle Sensor Error relearn). You don't even need to purchase credits unless you want to edit the calibration in the ECM or other modules they support. A CASE relearn should only be required if the crank sensor or ECM has been changed. Changing the cam and or deleting the VVT would not require it. And anyone wanting $500 to perform a CASE relearn is a thief.

[Tedybear315]

HP Tuners scanner will perform a A CASE relearn (Crank Angle Sensor Error relearn). You don't even need to purchase credits unless you want to edit the calibration in the ECM or other modules they support. A CASE relearn should only be required if the crank sensor or ECM has been changed. Changing the cam and or deleting the VVT would not require it. And anyone wanting $500 to perform a CASE relearn is a thief.

That's where the confusion comes in. The 2011 Silverado has a 2009 5.3. It does not have the VVT built into the engine, and the 2011 did on the PCM. So it's expecting to see the VVT system active (currently has a code for the cam/crank relearn and open circuit for the VVT solenoid)

I'm still chasing down issues with the cam sensor, looks like that will be an issue with the camshaft timing gear reluctor. (wave form's bad in one section)

That being said- Once I get that error resolved, I'll need to relearn the cam crank- And then delete the VVT. The local 'shop' (for lack of a better word) wanted $500 to delete the VVT. Another local shop said they would probably hit it for about $50 for the cam crank relearn in their shop.

Everyone's got their hands out!

I wouldn't mind getting an updated scan tool. But that yearly subscription leaves a bad taste in my mouth for the scan tools I can afford. Figured if the HP Tuners setup would allow me to do the cam crank relearn--as well delete the VVT? That would be a better option.

Thanks for the reply!

Steve B-

[gtstorey]

On my scan tool the subscription is to receive updates, mostly for newer vehicles. The scan tool still functions correctly for everything I have tried that was older than the last update.

[Tedybear315]

On my scan tool the subscription is to receive updates, mostly for newer vehicles. The scan tool still functions correctly for everything I have tried that was older than the last update.

I wish the scan tool companies where more clear. The ones I've looked at (entry/mid level ICON and TOPDON) simply state:

Update subscription to maintain functionality and for new features (makes/models)

They give you the first year subscription, but doesn't mention if the scan tool turns into a 'pumpkin' after that year is up.

I've got a decent Autel HT200 that Wallyworld sold. It's got the yearly subscription as well... Supposedly it can do the relearn- But it kicks the error 'module not supported'.

I work as a hobbyist on older cars/trucks. Nothing newer then 2015...

As I'll need to likely 'tune out' the VVT- Once I resolve the cam sensor issue (which is blowing my mind at this point for the waveform) I'll just pop for the HP setup. I'd hate to shell out $500 to have a local shop do it, when with assistance it can be done at my end.

Thanks!

Steve B-

[gtstorey]

Mine is an Autel.

[Tedybear315]

Mine is an Autel.

I'll look into the Autel series. But for the moment to clear this hurdle.

The HPtuners device (which I will have to look into in order to locate the suitable one) sounds like the reasonable choice as it'll need to be 'detuned'

Thanks!

[Alvin]

I've used HPtuners for CASE relearn. It doesn't seem as fool proof or shaken out as a legit scan tool for this. A dealership tool will prompt you to make sure the E brake is set, foot brake is pressed, temp is X.. HPtuners does not. So make sure you do those things because HPTuners will not prompt you to do it and the CASE relearn might not work.

I've heard that a CASE relearn will automatically happen after so many drive cycles. I can't promise that though.

Another note. CASE relearn is really only for detecting misfires. It doesn't effect how the vehicle runs. It isn't absolutely required.

[Tedybear315]

I've used HPtuners for CASE relearn. It doesn't seem as fool proof or shaken out as a legit scan tool for this. A dealership tool will prompt you to make sure the E brake is set, foot brake is pressed, temp is X.. HPtuners does not. So make sure you do those things because HPTuners will not prompt you to do it and the CASE relearn might not work.

I've heard that a CASE relearn will automatically happen after so many drive cycles. I can't promise that though.

Another note. CASE relearn is really only for detecting misfires. It doesn't effect how the vehicle runs. It isn't absolutely required.

Joys of living in the PRNY (People's Republic of New York)

If the check engine light is on for any reason- The car won't pass the state yearly anal probing

Which is pretty sad, as I purchased this truck a few months ago- And it's in really really good condition! Runs and drives like a dream. Has very little rust for NY. But I couldn't even find a shop that was willing to do the repairs needed to attempt to get it to pass (would need to be something like $400 or $500 total repair cost) and you would qualify for a safety inspection only.

One of the shops let me know that if any shop does the exemption even one time- The state sends in the auditors and their equivalent of "secret shopper" cars. So they give an allowance to get it to pass, but punish the shop with audits and hassle to the point they won't touch it.

As does California... New York isn't far behind.

Steve B-