Programmer problems

--------------------------------------------------------------------------------

I have a hypertech programmer and a 2001 2500HD 6.0, ran the programmer with no problem since 2003. Recently had the front and rear knock sensors as well as the wiring harness replaced and computer keeps throwing codes PO327 and PO332. Dealer said that I might need to upload some updates to make the computer pick up the new sensors. I tried to change the hypertech program back to stock settings and kept getting an upload failure or connection lost code from programmer. Also seems as though the stock security system shuts down the truck whenever the programmer attempts to reprogram it. Step 2 pulled the SEO IGN & ACCY fuses, same problem. Then pulled additional SEO fuses in the front engine compartment and still communications failure. Seems that the stock security system is still active with the above fuses out. So if anyone has any ideas let me know or should I just go to the dealer and get the computer completely reflashed?? Thanks

 

any help would be appreciated, which fuse disconnects the stock security system

 

Call Hypertech. I had issues a long time ago and they were pretty helpfull.

 

called already did everything they asked and still no fix, also still throwing codes po332 & po327 even though the knock sensors and wiring harness is new