Voltage drops when braking hard?
#1
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Hello everyone,
I have this new problem I can't figure out: whenever I brake hard, the voltage drops (the instrument panel shuts off, lights turn off, doors unlock -- the engine keeps running). Once the voltage comes back up, everything comes back to normal. It's kind of a stinker since it's very useful to have lights on when you're trying to brake hard! If I break only lightly, everything is ok.
Maybe a different issue: a while ago, when I was driving and it was raining hard, the car shut down completely (loss of power)
Any idea how I would go about diagnosing the exact problem and fixing it?
A few weeks before having these issues, I brought my truck to the dealer to fix similar electric issues. They charged me ~500$ but didn't fix anything
(they told me I needed to change my driver side door switch and my alternator; However, they are not a big problem IMHO).
I've also noticed there was water leaking under the carpet on the driver side. The water seems to have been coming from the satelite antenna (fixed now -- I believe)
There was also water coming in the trunk: I had tried to install a backup camera but never had a chance to connect it to the lights. The rubber covering the wires between the body of the truck and the door was not installed properly.
-Chevy Suburban 1500 LT, 2013
-4x4
-5.3L, Sunroof.
Installed towing kit.
I have this new problem I can't figure out: whenever I brake hard, the voltage drops (the instrument panel shuts off, lights turn off, doors unlock -- the engine keeps running). Once the voltage comes back up, everything comes back to normal. It's kind of a stinker since it's very useful to have lights on when you're trying to brake hard! If I break only lightly, everything is ok.
Maybe a different issue: a while ago, when I was driving and it was raining hard, the car shut down completely (loss of power)
Any idea how I would go about diagnosing the exact problem and fixing it?
A few weeks before having these issues, I brought my truck to the dealer to fix similar electric issues. They charged me ~500$ but didn't fix anything
![Frown](https://chevroletforum.com/forum/images/smilies/frown.gif)
I've also noticed there was water leaking under the carpet on the driver side. The water seems to have been coming from the satelite antenna (fixed now -- I believe)
There was also water coming in the trunk: I had tried to install a backup camera but never had a chance to connect it to the lights. The rubber covering the wires between the body of the truck and the door was not installed properly.
-Chevy Suburban 1500 LT, 2013
-4x4
-5.3L, Sunroof.
Installed towing kit.
Last edited by adrian.agapie; August 22nd, 2023 at 9:08 PM.
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