PIECE OF S&%T..........NO Tune LOADED

[Dsniper22]

2006 GM LBZ Predator 9r04

Truck had to go into the dealership, so i set it back to stock. When i got my truck back i went to load the 65hp tune in and all went well. Drove the truck the following day and felt no difference in throttle response or power from stock. Plugged the programmer in and went to load the 85hp tune, and it said "tune could not be loaded" and asked me to reboot. Rebooted predator and it said that it was not succesful in loading tune so it had to load stock tune back in. It took approx 5 attempts to get it to load the stock tune back in.

A day went by with driving it stock, and i decided to try loading a tune in again. No accesories or electronics on in vehicle, park brake on, key turned to on position(not accessory), heater controls turned off, stereo off. It read my stock tune perfectly, the when i went to install the tow tune the same thing happened. It told me that tune install was not successful and it had to reboot. After it rebooted it was NOT POSSIBLE to get it to load the stock tune. After approx 50-60 attempts with different combinations of park brake on/off and key positions I decided to start pulling fuses. Pulled the 3 fuses...............nothing(many attempts). It had always worked in the past without pulling fuses so it didn't seem like a good spot to start trouble shooting. Then i decided to pull some more fuses, daytime running lights as well as high/low beams. 5th attempt in with this combination it decided to load the stock tune back in so i could at least get home.

All this took place in a store parking lot over 1.5hrs. What the hell is going on. All opinions welcome.

[SublmnL]

I had something somewhat similar happen to me with my LB7 w/ a Quazilla Stealth. I needed to have it sent back for some warranty work an set it back to stock, got it back and tried loading a tune and my D-Max wouldn't take a tune. I tried everything under the sun including taking the tuner to Quadzilla and they said my programmer was fine. I finally went to try a BullyDog try b4 u buy thing and they couldn't load it either so I went on E-Bay, bought a new PCM for 160 bucks and wahla. Something happened at the dealership and I know they did something to the PCM because I guess they found traces of my programmer. Dunno.

[mikel]

Does this truck have any aftermarket electronics wired up in it?
Stereo? Remote start? Trailer brake?