Buy OEM Alternators For GM Vehicles

Replacing Alternators Before You Get Stranded

Maintaining an operational alternators unit is the most critical factor in preventing the "dead battery" syndrome that can leave you stranded. For owners of the popular GMC Sierra, a stable and clean voltage supply is essential for the operation of your sophisticated infotainment and trailering systems.

Top Symptoms of a Failing Alternator

Be wary of the following warning signs:

1. Battery Warning Light on Dash

Definitive sign of a failing regulator or worn internal brushes.

2. Dimming Headlights at Night

Indicates the alternators can no longer provide enough current for the lights and electronics.

3. Growling or Whining Sound

Usually indicates a failed internal bearing. Do not wait for it to seize.

4. Burning Rubber Odor

Often caused by a seized alternator pulley dragging against the belt.

5. Slow Cranking Speed

Signals that your battery isn't being fully charged during driving.

Frequently Asked Questions About Alternators

How long do genuine GM alternators last?

With proper maintenance, a genuine alternator is designed to provide clinical performance for over 100,000 miles.

Can a bad alternator ruin a new battery?

Yes, a faulty regulator can overcharge and "cook" your battery or undercharge it, leading to permanent deep-cycle damage.

Why is my alternator making a whining noise?

This is typically a sign of failing internal bearings or a short circuit in the internal copper windings.

Find the exact genuine alternator for your GMC, Chevy, Cadillac, or Buick here at Sons Online Parts Market, Reach out to us and our team will assist you today.