I have a 97 K1500 with 226K miles and a couple weeks ago the check engine llight came on. I went to Autozone and pulled the code which was 0753, 2nd gear solenoid circuit. Since I put in a GM certa transmission about a year ago I went back to the dealer because they would replace the solenoid under warranty. They replaced the solenoid but they could not clear the code because they said there is a feedback circuit in the ECM (PCM) that causes the fault. The trans shifts fine but every now and then I get serging on hard accelerations from stopped position, more prevelent when warm. I assumed the GM tech checked the wiring harness for bad connections or shorts. Has anyone experienced this before ? Is it a matter of some bad solder joints inside the unit I could reflow again ? If not what would be the cheapest option for replacement ? Dealer wants $525 for replacement and reprogram. The ser# on the PCM is 16229684.