I LS swapped an S10 with a 2004 Trailblazer/SSR LM4 engine & a 2002 CHD 4L60E. It has an Elgin E-1839P camshaft. I bought the custom wire harness, PCM & a start up tune from CPW. They sent me a 2005 Silverado tune file that left the battery light on in the S10 because of an incorrect serial data.
A friend from the S10 Forum explained that the OS in the 2005 Silverado tune was not compatible with an S10 instrument cluster logic module. He used OS 12587603 in his and the battery light works as it should.
I ordered a PCM from Flashmasters for a 2004 SSR. The MAF, O2's, Alternator & other items were bought for the 2004 Trailblazer/SSR. That PCM swap fixed the battery light issue but gave me two other issues.
1st) I don't have TCC with the new PCM. TCC mode does not change. TCC works fine and TCC mode changes as it lock up when the old PCM is put back in. So my question is what am I overlooking in this tune file that is prohibiting the TCC to enable?
2nd) the calculated load doesn't go past 28%. I am told that the transmission is load based for shift MPH, shift speeds & pressure rise. With the old PCM it goes above 80% as I was taught. I put a gauge on the transmission and it makes 210psi in drive at 2000 rpms. So I'm not sure that this matters as much as I have been taught.
What I did notice is that the 2004 SSR tune only shows 350 lbs. ft. of max torque and the 2005 Silverado shows 639 lbs. ft. of max torque. This is viewed in editor>engine>torque management>max torque.
So my on this my question is what are they looking at to calculate load %?
I attached both tune files and 2 similar road test log files, 1 from each PCM.