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'03 Sunfire - service wrench light

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Old Sep 16, 2023 | 11:47 AM
  #11  
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Originally Posted by DARIOcaptain
Yes, actually there is some sound coming from the front suspension. (There aren't any other warning lights illuminated tho.)
It seems that there may be something wrong with the front suspension, it sounds like something is hitting some part (?). This has already been like that for a year or two since my grandfather didn't bother fixing it.
Also the right window is completely dead and the left one (still works) may seem like the rotor is working really hard to roll it up.
I'm not sure it would detect whatever is clunking in the suspension, but maybe. I'm more thinking a measurement and/or calculation of something that the PCM is connected to is improper.
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Old Sep 17, 2023 | 09:27 AM
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Originally Posted by CathedralCub
I could see it maybe doing something. Most GM cars over the last 30 years reset the oil-change interval by pressing the gas pedal to the floor three times with the ignition on and engine stopped, so add a hook for the brake pedal in its little mind and maybe something could happen.
So you mean just to press the gas pedal 3 times with the ignition on?
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Old Sep 17, 2023 | 09:33 AM
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I will give it to my local service in the upcoming week for the suspension and service light check.
I'll see what they say.
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Old Sep 17, 2023 | 02:29 PM
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Originally Posted by CathedralCub
I could see it maybe doing something. Most GM cars over the last 30 years reset the oil-change interval by pressing the gas pedal to the floor three times with the ignition on and engine stopped, so add a hook for the brake pedal in its little mind and maybe something could happen.
It say'* this. "You need to (while car is off) pump gas 1 time & break 1 time; Then turn your key to the on (but not cranked) positions."
With the key in resting position how can doing anything with the brakes or gas going to do anything since the entire system is sleeping.
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Old Sep 19, 2023 | 12:19 AM
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Originally Posted by DARIOcaptain
So you mean just to press the gas pedal 3 times with the ignition on?
Yep, with the ignition on and engine stopped. Even on cars with a way to reset it through buttons etc. usually will do it this way. On some you can navigate to the [oil life remaining] menu then watch it change to 100% after you do this. The oldest GM that I know of off the top of my head that will do this is the `90s B-bodies (Caprice/Impala/Roadmaster/Wagons). There are strange exceptions too, like how the late `90s H-bodies (LeSabre/Boneville/Eighty-Eight) won't do this, but have a button in the glove box instead.
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Old Sep 19, 2023 | 12:28 AM
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Originally Posted by carfixer007
It say'* this. "You need to (while car is off) pump gas 1 time & break 1 time; Then turn your key to the on (but not cranked) positions."
With the key in resting position how can doing anything with the brakes or gas going to do anything since the entire system is sleeping.
I agree. I don't think it would notice anything while the ignition is off . . . except maybe set off the alarm if the brake light switch is wired to the antitheft system.
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Old Apr 17, 2024 | 06:16 PM
  #17  
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Okay, I haven't posted here for a while.

I got the car checked multiple times already and the sound coming from the front suspension is some rod hitting the subframe - it'* not bad tho, I put some rubber there and it'* much smoother now.

What I think is causing the service wrench light come up every time I start the car is that there must be something wrong with the central locking mechanism (if those Sunfires even had one).

There must be some short circuit in it as in totally random situations the whole electrical system goes crazy - it mostly comes down to my headlights turning off while driving and hazard lights come up constantly glowing and at the same time I can hear the door locks locking and unlocking.
Another symptoms of it are - in random moments when locking it via the key fob the locks tend to lock and unlock immediately after that, forcing me to lock the car manually with the key from each side.
Yesterday it has reached its peak - the door locks were going crazy while the car was off and the parking brake light was flickering on the dashboard (despite being off) and it even honked making everyone at the parking lot look at me as some kind of a maniac


So my question is - if those Sunfires had "advanced electrical technology" like central locking system, where can I find it?
This forum is prolly the only place I can successfully seek help as there are totally no service centers for Pontiac in Poland and I'm just on my own in this matter.
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Old Apr 17, 2024 | 11:00 PM
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It sounds like there are shorts in the fuse/relay center . . . and/or possibly there are several bad grounds.
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Old Apr 19, 2024 | 03:20 PM
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I checked the fusebox under the hood and it'* actually quite dirty - however I don't think it'* what causes the problem.

Maybe it'* something with the Body Control Module?

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Old Apr 19, 2024 | 08:25 PM
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I would be suspicious of the wiring behind it more than what it looks like from the front.

What grounds have you checked?
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