Park light on and draining battery?

MBAHLOUL

MEMBER
2009 GMC TERRAIN
150,000 MILES

I was trying to fix the A/C which turns wiper's on whenever A/C is on. Then later the A/C will switch off for a time then on. A/C is fixed, wipers need motor change. But a park light turned and drained 2 batteries.
I had it on scanner and this is what I got.

3 Replies

JACOBANDNICKOLAS

MECHANIC
108,217 POSTS

Hi,

Are you referring to the parking lamps or something different? Is it only one light you see staying on and if so, which one?

If there is a light on at all times, there must be a short to power at some point. You could try removing one fuse at a time to see if you can locate one that turns the light off. That way, we will know which circuit is powering the light and it will make things easier to diagnose.

The last thing you mentioned was having the computer scanned. You mentioned, "and this is what I got." Was there something you tried to attach to the thread?

Let me know.

Joe

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Friday, July 21st, 2023 AT 8:27 PM

MBAHLOUL

MEMBER
2 POSTS

Hi,
Thanks for your reply.
The light is the park light, it is on all the time on the screen. I will attach the scanner result.

Image (Click to make bigger)

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Saturday, July 22nd, 2023 AT 12:19 AM

JACOBANDNICKOLAS

MECHANIC
108,217 POSTS

Hi,

I see the HCM (headlamp control module) listed with one code. What is the code? Let me know that so I can check into it further to see if that is causing the issue.

Let me know.

Joe

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Saturday, July 22nd, 2023 AT 9:09 PM