Will not turn over

Thank you so much. I will see if the guy will answer my call today and ask him for the information you asked me to get. Then I will post it. Is that the correct way?

I asked him today for what you asked for. His reply was. "The codes were gone because of the battery being dead". He then sent me two Google photographs to look at what ever machine he used to see codes. I went there and I can't figure out what any of it means. It seems to say the same thing over and over. No numbers just stuff like going threw tests and can't communicate with everything it tries to read. I tried to upload this email but no luck.

Well this worked. Let me try the other.

This whole thing has got me so upset. I have never had to take a vehicle in to the shop before. Always fixed them myself. Look what the world has done to us. This was the nicest vehicle I ever owned (looked good anyway). Who could know. Why sell a truck that no one can fix.

Is advance scan tool a brand of scan tool? I can't find it. Can you point me in the right direction? Please.

Thought you were gonna help me figure it out

Thank you for the response. This week I am going to figure out what I am going to do about the guy working on it and get it home. I have learned a lot about the system from reading and much to do with your help. After I get it home I will buy a scanner. Just not sure how far to go with it for what I need to know from it. And it seems dumb to buy one that is non directional. As with everything it requires much reading to figure out what each one does. You may be able to help me with that. What features would you say a person would really want to have with a scanner, without spending all my lunch money? You will be hearing from me as soon as I have diagnostics for you to read. Thank you Thank you Thank you. And enjoy your Sunday

Thank you. I had the truck towed to the dealer for their $ 180.00 diagnoses. Before I got home from the dealer they called me. They said. You better sit down. Then said that I have no power to anything that is supposed to light up with the key on. I thought to myself. Well duuuh. I told you that. But the sit down news was before they could do anything the diagnostic charge was going up to $680.00. What could I do. I am going to find out why today. I am thinking they used a CAN scanner. But then I thought. That would be the scanner the dealer should use anyway. So I'm not sure why the diagnostic charge went from $200.00 to $800.00 From them just sitting in the truck while they towed it into the fenced area.
The next morning they called and told me that it needed a new Hpcm. Hybrid Power Control Module. They tell me it is going to cost
$8800.00 and it is not worth it to fix it. So I ask how much the parts are. They say Almost $7,000.00. And $6,500.00 is for the HPCM.
I have been reading all week about this system and the parts it may need depending on the diagnoses. I know that the Inverter Assembly cost me about $3200.00 from GM Direct and the Power Control Module cost me about $600.00. Now. If the power Control Module brings a code of U0100, like mine does. Meaning the PCM has lost communications with all the other Modules. Would that warrent the replacement of the inverter and the PCM?
There is another code. Code number POC76-00 that also came up on the scan that ( from what the guy that worked on it first says is the first scan after the Hybrid used battery was installed). This code says. Hybrid battery system high voltage present. That code is listed at all the modules that say, Lost communication with the TCP. Modules meaning System Modules. I am understanding that the P0C76-00 fault code means that the Hybrid High Voltage that is left over in the system when it is shut off, is taking longer to bleed off then it would like it to. And that would cause the truck to not turn over or start. Can you shed some light on what that part of the system does. And why that, may mean that the Power Inverter is bad? I can not find any test for just the inverter. In fact there seems to be no information about it at all. Double Top Secret.
I will be repairing this truck. It is cherry in every other way. And who out there can afford to take a loss like that.
I am hoping you may be able to continue in helping me understand this system and how it works. If you can. Then I will tell you. Besides the people who designed it. Seems no body else does. Or just wont take the time to explain. Thanks again
Ron

Yes. I have been looking at the wire diagrams and you know how it is. Its going to take some time to figure out whats where wheres what. They are great. Thank you. And the Scan tool you suggested. That is a pretty good price. That is going to be the one that I get. I am going to check it out today, if I can still walk after talking to the dealer. I am just kinda stuck on the, " everyone is out to get all the money" thing with these repair guys. Cant wait to not have to deal with them. I have been doing Tile work for just about 40 years now. I could never do anything like charge for things I didn't do. Or tell someone I can do something I cant. Makes me just want to say. Whats wrong with you people ! And make me want to scream, ah! As I'm running down the street pulling my hair out.

Any one that sees this make sure. You have a wonderful day.

I am back. I am going to install a used drive motor generator control module. That has almost everything in it that works the starting and charging part of the hybrid. I have the used battery that the guy that worked on it left in the bed. I am going to install the battery and put it all back together and clear the codes the see what it comes up with. Does that sound like a good way to start?

I have it put back together. But no still crank. Dash lights up. Most things seems to be working inside the truck. The scan tool I have is not going to work for me. I subscribed to ALLDATA to try and figure this out. I thought that if I had the same information the shops use, It would be easier. But there is a big problem with that. The diagnostic procedures they give are great. Assuming you have all the top notch equipment to test with. I need to know what My scan tool needs to be capable of to get just enough info to repair my problem.
So the ALLDATA deal I joined on to. Really does not do me much good. I can't test everything they want me to and in the sequence they say. And that changes everything. Pretty much renders their shop manual useless.
Do you know of a repair manual for this system that will tell me the steps to take to repair this truck with tools like the regular guy buys. Or it would be really nice to have a manual that I look up the symptom and it would tell me what I need to check, where it is at and how to check it. In layman's words. I have gone in so many directions. I'm feeling dizzy. And I am not dumb. I've always been able fix just about anything. Gotta do something though. The dealer told me to just throw it away and take the loss. I still owe $5,000.00 on the loan. Are these guys crazy. It was very obvious that they did not know how to work on these systems. Chevrolet did not sell that many hybrid trucks in California in 2010. And the dealer does not repair it replaces. Anyway I am going to fix this truck. I sure could use some advise.
I need to start with the scan tool. What does its capabilities need to be.
And thank you guys. And girls if applicable.

Is there any way to put the vehicle into jump assist mode without a Tech 2 scan tool?

First I should apologize to the ALLDATA people. Its not their fault I don't know how to use their site.
That being said. I put a scan tool on the truck. Lots of communication codes, U0102, U0293, U1817, POAID, U1843. Then it has a test labeled; Available Modules; Global OBD2, Module# $7E8 Protocol;CAN Module# $7E9 The scan tool pretty much would not read anything. Their were more communacation dtc s caused by those faults and hybrid battery volts on 20 cells. On the dash. It reads, service theft deterrent system, service airbag system. Service tire monitor system. SYS, engine, and airbag lights are on. Everything else besides the drive train works. I have no idea. I was going to check the ignition switch as you suggested but after this I was not sure it would be needed. And the super fuses. Wondering if they all need reprogramming. Do I start at the power as you suggested?