wanger Posted February 22, 2008 Report Share Posted February 22, 2008 got a pcm for my 03 ss, i picked one up out of a 03 sierra, the engine in that was a 5.3. my question is will i have to put the stock tune in it first then go from there, or can i just load my tune from hp tuners and roll out. any input? thanks fellas Quote Link to comment Share on other sites More sharing options...
smoke03 Posted February 22, 2008 Report Share Posted February 22, 2008 got a pcm for my 03 ss, i picked one up out of a 03 sierra, the engine in that was a 5.3. my question is will i have to put the stock tune in it first then go from there, or can i just load my tune from hp tuners and roll out. any input? thanks fellas You should be able to just load the tune and go. HOWEVER IM NO EXPERT, those pcms could be different. Maybe some of the more knowledgeable members will chime in here Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted February 22, 2008 Report Share Posted February 22, 2008 well if you swap out your pcm with another one you can load the custom tune but after words you need to do a crank relearn on the pcm Quote Link to comment Share on other sites More sharing options...
smoke03 Posted February 22, 2008 Report Share Posted February 22, 2008 is the crank relearn the same for every tuner? Quote Link to comment Share on other sites More sharing options...
kelleyperformance Posted February 22, 2008 Report Share Posted February 22, 2008 yea it should work just fine. install it, then read the entire VCM, then do your tune and flash it in there. after, just do a crank relearn like 12srock said and your good to go. the relearn is only necesarry after a PCM swap Quote Link to comment Share on other sites More sharing options...
Vortec MAX Posted February 22, 2008 Report Share Posted February 22, 2008 yea it should work just fine. install it, then read the entire VCM, then do your tune and flash it in there. after, just do a crank relearn like 12srock said and your good to go. the relearn is only necesarry after a PCM swap If I understand correctly, he has a tune FILE that is for his truck, but a PCM from a 5.3 Sierra. You should be able to flash your file over the top of the 5.3 tune, as long as the PCMs are the same. It will cost you 2 more credits to license that PCM however, even if you have a license for your tune file. Mike Quote Link to comment Share on other sites More sharing options...
kelleyperformance Posted February 22, 2008 Report Share Posted February 22, 2008 yea but he still needs to read the new vcm before he can write over it... I do custom dyno tunes with hptuners everyday, its a specialty lol Quote Link to comment Share on other sites More sharing options...
Vortec MAX Posted February 22, 2008 Report Share Posted February 22, 2008 yea but he still needs to read the new vcm before he can write over it... I do custom dyno tunes with hptuners everyday, its a specialty lol So he has to do a read, then just exit without saving? I guess he could save the tune as long as he doesn't confuse it for a 6.0 tune at some point in time. HPTuners must make some changes to the PCM during a read then. I did not know this. Mike Quote Link to comment Share on other sites More sharing options...
wanger Posted February 22, 2008 Author Report Share Posted February 22, 2008 thanks alot guys, i will be doing this today, im the army so my freetime is limited at times, but ill post when i get it worked out Quote Link to comment Share on other sites More sharing options...
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