The VR is on the back of the alternator.
On a 1993 Cadillac STS, the voltage regulator is integrated into the alternator rather than being a separate component. This means that the generator (alternator) and the voltage regulator work together as a single unit. If you're having issues with the voltage regulator, you would typically need to replace the entire alternator assembly.
I'm not a mechanic / technician but I assume it would be the same as my 1982 Volvo 244GL . There are ( 2 ) small bolts/screws that hold it on the back of the alternator . I changed mine twice in the 12 years I had the car . Take the two screws out , tip the voltage regulator up as you remove it , installation is the reverse
A 1997 Pontiac Sunfire would have a voltage regulator and it would be found inside the alternator.
defective voltage regulator
If the voltage regulator (usually located inside the alternator) were to go bad and not limit voltage to the battery quite possilby _yes
The voltage regulator in a Volvo alternator has been built into the alternator since the 70's. To replace it, you would have to remove the alternator and disassemble it. Then the regulator can be accessed. It is probably soldered in, so you will need a good soldering gun and the ability to de-solder and solder. It would be quicker and easier to replace the alternator assembly with a remanufactured unit. massvolvoman
Defective voltage regulator.
In the 1993 Pontiac Grand Am GT, the voltage regulator is typically integrated into the alternator. To access it, you would need to locate the alternator, which is mounted on the engine, usually on the front passenger side. If the regulator needs replacement, it often requires removing the entire alternator from the vehicle.
In the 1986 Nissan 300ZX, the voltage regulator is typically located inside the alternator. To access it, you may need to remove the alternator from the engine bay. Some models might have an external voltage regulator, which would be mounted near the battery or on the firewall, but this is less common for the 300ZX. Always consult the vehicle's service manual for specific details related to your model.
If it's like my 1987, and I imagine it is, the alternator is internally regulated, so you won't find a voltage regulator box like you would on some older vehicles. In short, the voltage regulator is in the alternator.
Original equipment would have had an external voltage regulator. Internal regulators came out in the 1973 model year for GM.
It's inside the alternator. If you haven't already done one (and evidently you haven't) it would probably be best for you to just replace the whole thing. Some special tools are required and it can get a little overwhelming for the first timer.