Strange clock problem?

[AveoJoe]

Has anyone ever get the lower 10a clk,Radio fuse out? I pulled it out with the black case but could not remove the fuse? Radio has clock on it and the stock clock never worked so I left it pulled out. No more stock clock.

[daug1502]

Its tricky to get those out. You have to get them to unhook inside the fuse panel somehow. I saw someone do it but didnt catch how. Any way before putting them back he cut the tabs so they wouldnt hook any more but still had the covers.

[Thymeclock]

are only the hours off or the minutes off too? If the hours are off, then chances are, someone changed them. If the hours AND minutes are off, then check that fuse.

There is no possibility that anyone changed anything. I can personally guarantee that.

It did it again yesterday, apparently at the same time of day as the other time it happened. We drove the car at 5 PM and the clock was OK. Parked it for an hour. Around 6 PM when the car was restarted the clock was reading totally off, reading about 1 PM. I reset it. I drove it this morning and the clock remained accurate all morning.

This is an '09 with the clock mounted on the dash where the passenger airbag indicator light is also located. If there is a fuse for it, where is it located?

Other than a clock that's gone haywire, what else could it be?

[rodo]

... We drove the car at 5 PM and the clock was OK. Parked it for an hour. Around 6 PM when the car was restarted the clock was reading totally off, reading about 1 PM. I reset it. I drove it this morning and the clock remained accurate all morning...... Other than a clock that's gone haywire, what else could it be?

If it's not the clock module itself, it's going to be a problem in the 12V circuit that supplies it - it's behaving as if had momentarily lost 12V. Sounding like a flaky module, but would be worth checking battery and terminals. Corrosion can behave oddly, passing a high current draw for the starter or lights, while starving a miniscule draw like the clock.

[gclark8]

Checking fuses, connections etc, is all good advice. However, if it proves to be the clock, look for a dry joint on the internal (5V) voltage regulator and/or the un-switched 12v wire.

[AveoJoe]

my clock resets it self to 1:00 every time I open the door?

[Thymeclock]

If it's not the clock module itself, it's going to be a problem in the 12V circuit that supplies it - it's behaving as if had momentarily lost 12V. Sounding like a flaky module, but would be worth checking battery and terminals. Corrosion can behave oddly, passing a high current draw for the starter or lights, while starving a miniscule draw like the clock.

The car is barely two years old, always garaged, exceptionally clean under the hood. I know that battery terminals can become oxidized, increased resistance, etc., but believe me - if ever there were a situation where it doesn't look that way, this is it.

Now for an update: about a week after my initial comments, it got worse, and started doing the same reset to 1:00 several times per day. Then suddenly, the problem abated. It hasn't done it again at all now for several weeks.

This is the type of intermittent problem that can drive someone crazy. Thank God it's only the clock...

[snowmobilejon5000]

My dash clock only lasted half a year and then it would only randomly work, GM replaced it under warranty and that one stopped working about the same amount of time. My solution, unplug it. I have an aftermarket head-unit for my stereo and I just use that clock. The only thing with unplugging it is that your warning lights won't work but who cares these cars are indestructible.

[thehunterooo]

This thread reminds me of that meme "first world problems".........

[wigsel]

REmove the clock and dissassemble it. It only clips together. Replace diode D1. 1n4007 This will solve the problem.