Dad looked at the injectors and they are flex fuel marked as DENSO #25326903. I looked them up and they are the 32lb flex fuel injectors. There is a currently only a single fan in the truck so Dad...

2xls1, we GREATLY appreciate all of the work that you did for us. I'll have Dad pull the injectors and check the parts numbers. From what Dad said, the guy that sold him the truck was not very...

Got it! Good to know. I really appreciate all the help. It's wonderful to have a community that is willing to spread the knowledge.

Dad had a chance to test some today. I continued lowering the 1->2 shift speed at low throttle position and we got a change. That lines up with what you are telling me about having to scale the shift...

I just realized that you also asked for the stock OS from the '03 PCM before I overwrote it with the 603.bin. Sorry for the delay. It's attached.

Thanks! Dad wrote back. The tires are 245/60R18. I'll look at the stock bin now.

I misremembered the idle speed change. You are correct that we set the lower limit to 600.

The truck was "running away" with no foot on the throttle in 2nd gear. It would get faster and faster,...

My dad bought the truck for the guy that did the engine and transmission swap. I live several hours away so I'm waiting on a response from my dad on the tire size (H0101) and the fuel system...

Correct. The engine and transmission out of a donor 2003 Silverado 1500 were transplanted into a '91 S10 2 door pickup. I couldn't find the XDF for the '03 OS (12579405) so I used the OS from the...

Attached are the stock (04 Chevy 1500 4x2 LM7 12587603.bin) and modified (S10 12587603 1 Apr 21.bin). I downloaded the original from this forum.

My dad lives in a subdivision that has a pretty slow speed limit and wants the transmission to shift into 2nd sooner to lower the RPM when creeping around the block. I adjusted the 1->2 shift table...