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Any auto mechanics here?

Old 03-28-2019, 09:03 AM
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Default Any auto mechanics here?

Have a 2009 Chevy Equinox, original owner, 178,000 miles.
This morning, around 6:30 am the alarm starts blaring while it was sitting in the driveway. No one around. I hit the lock button on the key fob and the alarm stopped.
Weird, huh? Leaving for work at 7:30 and I try to remote start it from my living room. No dice. Figure it needs to be key started after the alarm trigger, so I go out there and start it manually with the key.
No problemo. Well, the DIC is showing "HOOD OPEN". Check hood, nope secure. Popped it anyway and slammed it back down. All good. Shut it off, and re-started with key, starts fine. Still has the HOOD OPEN message on the DIC.
Remote start no longer works now and every time I start it with the key, I get the HOOD OPEN message on the DIC. Otherwise runs fine. Interestingly enough, I did have it serviced yesterday, but only a LOF and tire rotate.
Thoughts??
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Old 03-28-2019, 09:07 AM
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Sounds like your battery may be getting weak.
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Old 03-28-2019, 09:08 AM
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Been rainy with high humidity? Can get weird electronic bugs in the damp. If you can get a dry sunny day, park it in the sun with hood and windows open.

Sounds like a flaky hood switch. Remote might not work if it thinks hood is open. Check that switch.
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Old 03-28-2019, 09:12 AM
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It's a Chevy, what do you expect? Burn it.

Now I'm no mechanic but the first thing I'd try is pull the fuse panel cover and see if there is a specific fuse for the hood circuit. If so, pull it and see what happens.
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Old 03-28-2019, 09:12 AM
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Originally Posted by CORALREEFER View Post
Sounds like your battery may be getting weak.
this! a weak battery will cause all kinds of explainable chaos like this!
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Old 03-28-2019, 09:18 AM
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It will not remote start if the hood open light is on. (or any other warnings)

You need to figure out the hood open light.
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Old 03-28-2019, 09:19 AM
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Put some more electronic crap in cars, just wait for the future. You guys like all your fancy wizardry, computers and electronic crap in cars and trucks, just wait
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Old 03-28-2019, 09:24 AM
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Originally Posted by Clamdigger II View Post
Put some more electronic crap in cars, just wait for the future. You guys like all your fancy wizardry, computers and electronic crap in cars and trucks, just wait
Oh the day of a shade tree mechanic around ever corner is loooooong gone.....diagnostic equipment is far to costly.
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Old 03-28-2019, 09:56 AM
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Correct me if I'm wrong, but if I lock it with the key fob (just one click - two clicks arm the alarm) it should prevent it from going off in the middle of the night, no?
I just don't want it going off if I am not home.
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Old 03-28-2019, 10:08 AM
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This sounds pretty straightforward.

Your hood likely has a simple pin switch connection to tell if it is open - which will set off the alarm, or prevent remote start. If you look around under the hood I'd be surprised if you can't identify it, it isn't that much different than the switch on your refrigerator door light. It would be somewhat unusual for the switch itself to fail (unless something has fallen off) so it could also be a wire short to ground elsewhere.

In either case you have two symptoms which point to the exact same simple cause...

Edit: looks like your hood open switch is integrated into the latch assembly, and there is also a service bulletin: http://ricksfreeautorepairadvice.com...-ajar-message/

Buy the redesigned part from a dealer and then have your local independent shop install it.
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Old 03-28-2019, 10:14 AM
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I looked around (albeit quickly because I had to get to work) for the "fridge jam" switch thingy, but I didn't see any.
I will check again later. Seems odd I had an LOF yesterday so the hood was open and the mechanic was under there. Maybe he knocked a wire off or something.
I may swing by there later since it's on the way home and he is a GM tech.

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Old 03-28-2019, 10:15 AM
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Hood ajar switch should be in the latch. Alarm thinks someone broke in.
Alarm should be set when vehicle is locked with power lock or remote.
Locking the vehicle may be accomplished without arming the content theft deterrent (CTD) system. Use of the manual door locks or using the key to lock the doors will lock the vehicle, but will not arm the CTD system.
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Old 03-28-2019, 10:20 AM
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Probably the switch in the hood latch. Look for a harness going to it. Might get away with removing it and cleaning the contacts. Outside chance is a mercury switch on the hood, near a hinge most likely, but usually that's reserved for aftermarket alarms...
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Old 03-28-2019, 10:21 AM
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Originally Posted by stuL View Post
Hood ajar switch should be in the latch. Alarm thinks someone broke in.
Alarm should be set when vehicle is locked with power lock or remote.
Locking the vehicle may be accomplished without arming the content theft deterrent (CTD) system. Use of the manual door locks or using the key to lock the doors will lock the vehicle, but will not arm the CTD system.
One click of the "lock" button on the fob locks all doors but does not "beep" the alarm. I assumed this meant is wasn't armed?
If I push the lock button twice, quickly, the second push "beeps" the horn and presumably the alarm is then armed? I am going away tomorrow and don't want this thing going off in the middle of the night for 3 days. Neighbors won't be happy.
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Old 03-28-2019, 10:23 AM
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OMG - this is crazy! I was just talking to my brother a couple weeks ago and he had to get his hood latch replaced ($360ish parts and labor at dealer) on his 2016 2500. I told him I have never ever heard of a hood latch being replaced but it looks like a common Chevi thing.
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Old 03-28-2019, 10:48 AM
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First off if there are any codes,the remote start will not work..The Hood latch saying the hood is open will not let the remote start work. Probably need a new hood latch. As stated before,the BCM thinks the Vehicle has been tampered with because the Hood latch is telling it that it is open when You have the alarm set.I can send You a wiring diagram if You like.
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Old 03-28-2019, 10:50 AM
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Hood switch is bad.
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Old 03-28-2019, 11:02 AM
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Key battery weak??
Remove 12 V battery cable, wait 1 minute and install to reset system.
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Old 03-28-2019, 11:16 AM
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I found the wires coming from the latch to a plug that attaches to a piece of the frame via a small clip. Used needle nose to squeeze the clip and removed from frame. Gave me better access to the plug. Unplugged it, contacts looked really clean.
Plugged it back in again, wiggled it around, no fixy. Guess I will order a new latch.

Last edited by TimC2520; 03-28-2019 at 11:22 AM.
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