1G Radiator, battery & brake light on. Blinks with right turn signal.

[James92]

Have a video if it helps but like the title says these three are on all the time just as of this past Friday night. Was doing some pulls and got on the brakes and these 3 popped up and never went away. Car runs fine so I started and while idling I pulled the negative side from the battery and stayed running, ECMlink shows 14.1v while idling.

Doesn’t appear to be any shorts, this coming weekend I’m jacking the car on all 4 and getting around to replacing my rear brake rotors and pads so I’ll investigate further.

Any ideas? I’m sure pulling the alternator and having it tested would be a wise thing, it is a GM alternator. Feeling like I’m gonna need to identify and remove ALL grounding straps and do my due diligence but honestly just trying to get these lights to go away. Got my OCD going wild about it.

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[dwb]

Try taking a voltage reading with a normal dc volt meter across the battery. Then put some load on it - headlights, blower, rear defroster and see if it mostly keeps up. Maybe compare that number to a log.

Odd that they flash with turn signal though. Or is it when turning the wheel?
Definitely a good idea to check your grounds.

I'd also shy away from disconnecting the battery while running. This isn't your grandpas farm tractor.

 

[James92]

Try taking a voltage reading with a normal dc volt meter across the battery. Then put some load on it - headlights, blower, rear defroster and see if it mostly keeps up. Maybe compare that number to a log.

Odd that they flash with turn signal though. Or is it when turning the wheel?
Definitely a good idea to check your grounds.

I'd also shy away from disconnecting the battery while running. This isn't your grandpas farm tractor.

I hear that on the battery disconnect; I didn’t like it either but felt I needed to rule it out.

Ok I’ll give that a shot when I’m standing over the car which is every weekend as it’s not a DD, see’s about 30-40 miles a month and the sporadic idling sessions.

 

[luv2rallye]

Most likely a bad ground somewhere.