transman: The P0C32 is not under the hood. It is from the HV battery controller to the hybrid controller. Blankets, oversized floor mats, duffle bags, etc can obstruct the HV battery air inlets on the floor in front of the HV battery location. In one very rare case a parked SUV had dog food in the cooling fan.

Mice.

 

I got an official guide for replacing the Aux Trans Pump for 2008 Hybrid Chevrolet Tahoe. Could I use this guide for replacing it in Silverado 09? There shouldn't be much difference right?

 

Yes you can use the 2008 guide. There was an electrical connector change in the 2010 model year. The bolts, gaskets, and wires are the same 2008/2009.

 

I have seen this vent issue in many threads now, so I know a placard here maybe a nice idea for us older forgetful folks

 

can somebody explain in detail what it is?

 

evois, I think you are talking about the vent to the 300V battery. The big hybrid battery, HV, traction battery, whatever you want to call it. It is under your second row seat and has vent slots on the cover. In the siverado, the vent slots are right on the front face of the battery cover down by the floor. You can see this vent, grille, slots, whatever you want to call them. But it is a particularly ill suited location for a vent because so many items could block the air flow through it. Throw your coat on the rear seat and then you slides off and the next thing you know you have an overheat due to blocked airflow. It is in the middle of the battery cover on the front face, in the middle of the cover directly behind the center console, above the hump (drive shaft tunnel) in the floor board.

If there is a negative to the design in GM's two mode hybrid, it would be the battery location and the constraints it places on operators. I suspect this issue will disappear in a few years when the battery is replaced with a Li Ion that is much smaller, lighter, and can be accomodated easier. In the trucks, you entire interior storage is the rear floor in front of the rear seat when the seat is lifted up. That huge battery cover takes up so much room and you have to be careful not to bury it due to air circulation, so it pretty much makes the back interior space useless for any cargo. I agree with kklein...it needs a placard (warning sticker) there to warn users not to block the grille...but I would just take the sticker off because it would be an eye sore.

Stop reading if you like...this is just a funny note about these placards...in the US, everything is liability based. I have a boat I bought last year and it had almost every square inch of free space on the fiberglass covered with warning stickers. And on another forum pertaining to those boats, owners discuss frequently the stickers, how to remove them, and laugh about how overboard the whole thing is...but, you have to let people know and most won't read a manual, so it needs to be in front of their eyes. I mean really, do you have to tell someone that a slick glassy fiberglass surface may be slick and pose a hazard if you step there? I guess so.

 

Yes Mel I agree just like Placards in the aviation industry it is a liability issue.

 

Hey everyone guess what....

Truck came back to normal... hybrid works fine; no check engine light.
Is the altitude making me loose my senses? Can this be real and permanent?


......by the way brakes are doing good

 

David glad to hear everything is okay, what did you do, or did it just correct itself?

 

this should be a sticky! hybrid works fine! no check engine light! truck is normal!