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    2007 Navigation Turning on/off Intermittently After New BCM?

    What’s the name? I actually purchased the new bcm from an auto shop on eBay. You mentioned the RPO sheet and U codes. Is that something I can look into myself? Or only someone that has the equipment to program BCM’s?
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    2007 Navigation Turning on/off Intermittently After New BCM?

    Also, I have read that when people have upgraded to an OE Nav unit from another radio unit, the BCM had to be performances to recognize it or it would activate TheftLock. That’s not my problem though. It just turns on/off intermittently. It’s not locked. For the moments it stays on, I get sound...
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    2007 Navigation Turning on/off Intermittently After New BCM?

    So the BCM would have to be reprogrammed or the Nav unit would need to be reprogrammed?
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    2007 Navigation Turning on/off Intermittently After New BCM?

    Haha, that it is, but my main goal of getting the truck back up and running well was to trade/sell it for a new truck. Although being unemployed due to COVID sure makes that unlikely. :favorites68: So if I tracked down a compatible OE unit, does it need to be programmed to my VIN? Are newer OE...
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    2007 Navigation Turning on/off Intermittently After New BCM?

    So I’ve been battling with my 2007 Denali for over a year to get it running. First a bad PCV valve, then a bent intake valve causing loss of compression/misfire, machine shop fixed the head, bad starter, fuses, relays, etc...electrical gremlins. Probably due to the BCM going to sh*t, which I...
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    No crank/start after replacing intake manifold. Security lock out?

    Awesome, I’ll give that a try as well. It seems that these steps are very specific, and I have yet to try that process. Probably why I’ve had to try it so many times.. if it isn’t perfectly executed, it doesn’t work. Thank you! Crossing fingers.
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    No crank/start after replacing intake manifold. Security lock out?

    Unfortunately I started the work, thinking it’d be a quick fix, as we were starting a move into our new home. So painting, flooring, carpet, unpacking, etc, sidelined getting back under the hood and it’s currently stuck at my parents house. I’m hoping to get over there this weekend and try what...
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    No crank/start after replacing intake manifold. Security lock out?

    Totally stumped again. A while back I posted about replacing my cylinder head when I was misfiring due to a bent intake valve. I was getting weird messages on the gauge cluster info screen, no crank/start, and power to some but not all accessories. I replaced the starter, no change. Ignition...
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    2007 Denali wont start after cylinder head replacement

    So I haven’t had a chance to get around to pulling the injector yet. I’ve been trying to at least run it for a few min each day to keep the battery charged and burn through the old fuel. I’m still above 3/4 of a tank. Oil pressure seems ok while I’m sitting there idling, a little below 40. I...
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    2007 Denali wont start after cylinder head replacement

    I never really knew what my oil pressure was before the repairs because my oil pressure sensing unit was bad, so I finally replaced that while I had the upper half of the engine torn down. I completely drained the oil and refilled it once it was reassembled. The code was a P0305, and there was...
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    2007 Denali wont start after cylinder head replacement

    So it’s been a while, but I finally got the thing running. New battery, replaced all the relays in the starting circuit and reprogrammed the key. Although it’s still not without some issues. I’ve been driving it short distances periodically the last week or so. Still smells like burning oil, not...
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    2007 Denali wont start after cylinder head replacement

    Took the old starter to autozone to have it tested. I heard what sounded like spinning noise when they tested it, but they said it was bad. Got a new starter, put it in, exactly the same. No response from the starter, just silence and the relay clicking. Pretty sure the battery is garbage, had...
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    2007 Denali wont start after cylinder head replacement

    I don’t have a voltage tester but I believe my neighbor does so I’ll see if I can get ahold of one. L When you had the same problem, did you also have any of the service/check engine lights/messages? I’m worried it may be a BCM/PCM issue only because I don’t get power to all my accessories...
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    2007 Denali wont start after cylinder head replacement

    So my leg is finally healing to the point where I can get around decently enough, so I’m going to pull the starter tomorrow and get it tested to eliminate that. Does anyone know where I can get a schematic of the starting circuit? I was reading that the starting circuit may or may not pass...
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    2007 Denali wont start after cylinder head replacement

    Looks like it'll be on hold for a moment since over the weekend I rolled my ankle, strained my calf and hyperextended my leg :favorites68: I did check the starter relay in the fuse box and it's clicking when turning the key, so that should mean the relay and ignition switch are good, which only...
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    2007 Denali wont start after cylinder head replacement

    The battery has been hooked up to a charger/jump box for two days, so it should have plenty of power. Could the inability to start have something to do with the security system? The security light comes on the dash when I first turn the key but turns off after about 5 sec. I’m out of town so...
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    2007 Denali wont start after cylinder head replacement

    Hello all, I'm incredibly stumped. After almost 4 months (due to lack of free time) of my truck sitting in the garage, i finally got it all together and the damn thing won't start. I discovered that cylinder 5 had zero compression. I pull the head and one of the valve seats is about 1/4" out of...
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    Liftgate exterior window switch replacement - I'm stuck!

    Glad I found this thread! I'll have to be removing the appliqué on my 2007 Denali. Had body work done and apparently they didn't hook up the wiring harness correctly and now neither of the license plate lights illuminate. So the only way to remove it is to remove the interior panel? The button...

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