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    2008 Tahoe Hybrid Engine Temp Rises in Auto/Stop

    Thanks so much for the input! The more that I researched I was able to put together that the pump under the coolant tank and the one farther down the line towards the driver side are only for the hybrid component cooling. I'm sure if those failed you would get a warning or message. The pump...
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    2008 Tahoe Hybrid Engine Temp Rises in Auto/Stop

    Hello! The engine temperature needle goes past 210 when the Tahoe enters into Auto/Stop. The temp levels out and stays right at 210 when the engine runs. Coolant reservoirs are where they should be at. My first thought is that the little auxiliary pump motors that are in-line with the...
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    2008 Tahoe Hybrid 12v Battery Constantly Dying

    Howdy, Happy to report that the + cable stopgap did prove one of the problems was at the original battery terminal/cables . The cables that were shorting out in the loom and repaired have made the issue with electrical issues go away completely. The new + cable assembly arrived and I installed...
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    2008 Tahoe Hybrid 12v Battery Constantly Dying

    Thank you for the advice! I was able to work around the HV cables and didn't die haha. Gentlemen, I may have named this post incorrectly. The problem may have been a combination of issues. The dealership replaced the negative cable but did not replace the Positive. I found this weekend that my...
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    Lurching and Hiccups

    Interesting! So you’re saying the symptom of the lurch when the pack is hot is resolved with that controller? Looks like it may need to be programmed and isn’t plug n play? Thanks for the share!
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    2008 Tahoe Hybrid 12v Battery Constantly Dying

    Hey all, Saturday night update. Replaced the 200amp fuse and made no change. Confirmed the system is charging the 12v battery. At fresh crank it’s 14.7 volts and just fluctuates over 5-10 mins down to 13 and back up to 14 and such. Getting good voltage while ice runs and when in auto stop...
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    2008 Tahoe Hybrid 12v Battery Constantly Dying

    Thank you everyone! I will be doing all this today and tomorrow. I’ll see if I can find something to report back. I truly appreciate the input and time
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    2008 Tahoe Hybrid 12v Battery Constantly Dying

    Hello, I have a 2008 Tahoe Hybrid. All software up to date. 5-6 year old 300v battery pack and 2 year old 12v battery. No CEL or issues at all and regularly maintained. About 4 weeks ago it would not start in the morning. Nothing had changed or had been changed up to that point. Took it to...
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    Lurching and Hiccups

    Hey there, The symptoms youre describing are the same that we had when our 2008 hybrid 300V battery pack was shot. The batteries that go first are the ones in the middle of the pack. I confirmed this by calling a local hybrid shop and they had the software to read the voltage and load on the...
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    2008 Tahoe Remote Keyless Entry Issue

    Hey @leftwing27 If youre still around and can recall your issue before replacing the BCM, was the RCDLR pulling a lot of milliamps or just acting strange? when I pull the RCDLR out of the circuit I see milliamps drop to 40-50mA but when plugged in it pulls 70-112mA sporadically over and over...

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