95Blackhawk

This is an "EEPROM Programming error". It just showed up right after a flash and a WOT run. It started with DTC 41 (IC circuit open) and immediatly went to DTC 51. It also shot me a DTC 36 (high res fault) about 3 seconds later along with a 66 (A/C low pressure) and 71 (A/C evap sensor fail). I don't even have my A/C hooked up at this time and have never seen these faults.

I cleared all of them and the car started fine and went home. Upon looking at the official GM service manual, it say if this ever appears, you need to get a new PCM.

Thankfully I have a spare PCM but wanted to know from folks if they have ever had this and if the PCM really is damaged or just reflash.

thanks,
Ben

shoebox

It was probably just a power glitch. If it clears and doesn't come back, you don't have any worries.

95Blackhawk

Found out I did have a power glitch but the PCM would not reflash so it was damaged...