Where is voltage regulator on 87 Chevy pickup?

The voltage regulator on an 87 Chevy pickup is usually located on the passenger side of the engine compartment, mounted on the firewall near the alternator. However, there's a slight chance it could be integrated into the alternator itself, especially on some models.

To be sure, the best approach is to:

1. Consult your owner's manual: This is the most definitive source for the location of components in your specific truck.

2. Look closely at the alternator: Check for a separate unit bolted nearby, or determine if the regulator is built into the alternator itself (some alternators have an internal regulator).

3. Trace the wires from the alternator: Follow the wiring harness leading from the alternator; it will lead to the voltage regulator.

Keep in mind that the exact location can vary slightly depending on the engine and options of your specific truck. A visual inspection and possibly a wiring trace are the most reliable methods to locate it.