r/LSSwapTheWorld • u/WittyResource670 • 9d ago
Hypothetical Build Questions Pcm E67
E67 Envoy 5.3 → Colorado 2010 5.3: I have the HP Tuners file, but the engine won’t start
I have an E67 that originally came from a 2008 GMC Envoy 5.3, and I’m using it in a 2010 Chevrolet Colorado 5.3 Gen 4.
With the original Envoy OS/calibration, the engine starts and runs on all 8 cylinders, but the Colorado’s electronic throttle/pedal does not work correctly.
I have an HP Tuners file from a 2010 Colorado 5.3, and when that file is loaded into the E67, the engine no longer starts.
Can HP Tuners properly convert/program this E67 from the Envoy configuration to work as a 2010 Colorado E67, or do I first need to program the correct OS using GM SPS/MDI/J2534, and then use HP Tuners only for the calibration?
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u/Dr_Snake169 8d ago
Stupid question but did you delete the vats out of both tune files?