Tuning with a Aftermarket Radio??

[8100 Power]

I just put in a aftermarket radio in my truck. I've heard this gives a greater chance of stalling things or "frying" things when flashing?

Don't want to be stuck with a dead truck... Thanks

 

[Kat]

Some people have problems with them some don't Pat has never had a problem flashing Wendy.

 

[Cougar281]

I think a big part of that is whether or not it ties into the Class2 bus. If it doesn't (which I'd GUESS that none of the aftermarket headunits do), then you'll be fine. If you have something like an iPod adapter or the Sirius adapter or other adapter that ties into the radio on the class2 bus along side or in place of the XM reciever, than you could have problems. If you're concerned about the HU, pull the radio fuse when you're going to flash. With all stock "stuff" on the Class2 bus, I've never pulled a fuse, and knock on wood, I've never had an issue.

And to add, I see that you have an 06. With an 06, I'd say you have near zero chance of anything causing any issues, unless you have a huge amp that drains the batteries powered on when you're flashing. Since the 06 flashes on the GMLAN bus, and AFAIK, there are no aftermarket devices that tie into the GMLAN bus (The only thing it's used for in the 2006 LLY, and 2006 & 2007 LBZ is the ECM, TCM & GPCM with leads coming back to the DLC for programming and diagnostics), I sincerely doubt you'll have any issues.

 

[8100 Power]

I think a big part of that is whether or not it ties into the Class2 bus. If it doesn't (which I'd GUESS that none of the aftermarket headunits do), then you'll be fine. If you have something like an iPod adapter or the Sirius adapter or other adapter that ties into the radio on the class2 bus along side or in place of the XM reciever, than you could have problems. If you're concerned about the HU, pull the radio fuse when you're going to flash. With all stock "stuff" on the Class2 bus, I've never pulled a fuse, and knock on wood, I've never had an issue.

I see where your coming from. I guess this would be included into the class2 stream, seeing that my PAC adapter runs though the Onstar and bose speakers?

So, when you do toast a ECM, is it actually toast, as in throw in the trash, or can somebody reprogram to make use again?

 

[Cougar281]

I see where your coming from. I guess this would be included into the class2 stream, seeing that my PAC adapter runs though the Onstar and bose speakers?

So, when you do toast a ECM, is it actually toast, as in throw in the trash, or can somebody reprogram to make use again?

Yes, the PAC adapter could cause issues in an 01-05. As I said in my post (in my edit that I completed after you started replying ), since you're flashing on the GMLAN bus, and the PAC is on the Class2 bus, I doubt you'll have any issues.

 

[LarryJewell]

Yes, the PAC adapter could cause issues in an 01-05. As I said in my post (in my edit that I completed after you started replying ), since you're flashing on the GMLAN bus, and the PAC is on the Class2 bus, I doubt you'll have any issues.

I cant flash without pulling the radio fuse , I got tired of pulling the fuse so I installed a switch to kill the fuse rather than having to pul it everytime

 

[EFI Support]

Cougar is right. The LBZ flashing communications occur on the GMLAN bus - most aftermarket devices don't communicate on GMLAN but on Class2. Effectively this should remove any nerves you have about flashing your ECM. The other advantage that GMLAN has over Class2 is that it is more stable when it comes to being interupted during programming.

Cheers
Cindy

 

[slowlmm]

I have never had issue with mine with efi. knock on wood I did have issues when i had a ppe tuner thoe for wht ever reason.

 

[8100 Power]

I did flash today with sucess!

Thanks everyone!