OP
OP
braveheartwallace
TYF Newbie
- Joined
- Dec 21, 2017
- Posts
- 18
- Reaction score
- 7
An update after visiting the GMC/Chevy dealer in Monahans:
They were no help at all. After waiting for 6 hours a tech came to me and said "You need a new AC/DC inverter, your's is completely shot. Parts will be $5000, labor $7000, how do you want to proceed?"
I asked what DTCs they read and what tests were performed to diagnose that. He didn't have any new codes aside from what I told the dealer I found with ignition voltage. I asked him how he was sure the inverter was INOP. He said thats what their tests concluded. I share that if the inverter was compeltely non functional it should throw several DTCs. Additionally, with no inverter functionality, you would have no engine crank, no AC compressor, and no power steering. All of which still function on my car.
The tech looked at me like a deer in the headlighs and exclaimed "I didn't realize you knew that much about the car. I'll go run more tests..."
After 2 more hours the service manager came to me saying "the tech's aid you need an inverter, $5000, $7000 labor, blah blah..."
I asked the service manager if they did any further diagnosis in the last two hours and he didn't know. We then tried looking for the techs working on myh car and were unable to find them anywhere.
I towed the car home to San Antonio with a uhaul flatbed and have begun working on it in a limited capacity.
I have disconnected the 12v battery and shorted the + and - termiamls for about 3 days. I started the car and it ran and drove fine for 3:55 seconds before shutting down. Again, no check engien light or DTCs, but this high ignition voltage error is in the history. Planned next steps are to disaseble the high voltage battery, check all cells with a multi meter, and double check all HV connections and sensors.
They were no help at all. After waiting for 6 hours a tech came to me and said "You need a new AC/DC inverter, your's is completely shot. Parts will be $5000, labor $7000, how do you want to proceed?"
I asked what DTCs they read and what tests were performed to diagnose that. He didn't have any new codes aside from what I told the dealer I found with ignition voltage. I asked him how he was sure the inverter was INOP. He said thats what their tests concluded. I share that if the inverter was compeltely non functional it should throw several DTCs. Additionally, with no inverter functionality, you would have no engine crank, no AC compressor, and no power steering. All of which still function on my car.
The tech looked at me like a deer in the headlighs and exclaimed "I didn't realize you knew that much about the car. I'll go run more tests..."
After 2 more hours the service manager came to me saying "the tech's aid you need an inverter, $5000, $7000 labor, blah blah..."
I asked the service manager if they did any further diagnosis in the last two hours and he didn't know. We then tried looking for the techs working on myh car and were unable to find them anywhere.
I towed the car home to San Antonio with a uhaul flatbed and have begun working on it in a limited capacity.
I have disconnected the 12v battery and shorted the + and - termiamls for about 3 days. I started the car and it ran and drove fine for 3:55 seconds before shutting down. Again, no check engien light or DTCs, but this high ignition voltage error is in the history. Planned next steps are to disaseble the high voltage battery, check all cells with a multi meter, and double check all HV connections and sensors.
