Heavy Truck Alternator Service

The Best Alternator Service in Tennessee & Mississippi

Overview of Heavy-Duty Truck Alternators

The starting system and the charging system make up the bulk of the electrical system. Important components are batteries, the starter, the alternator, interconnecting wiring, and electrical relays. If your alternator isn't functioning properly, it can actually effect your truck's overall efficiency and be fairly costly over long hauls, leading to increased fuel costs and possible downtime.

Do I need to replace my alternator?

Is it a dead battery or a failing alternator? Here's a quick checklist to diagnose which it might be:

Dying battery

If your alternator's not running properly, your truck will drain your battery reserves and stop powering lights, starting, or other issues. If you're going to replace a battery, check the alternator first to make sure it's delivering adequate current.

Lights are dim

Dim and/or flickering lights are one of the most commons signs of a failing alternator. It might be a sudden burst of light coming from your headlights or simply a dim or flickering dashboard. Either way, this is a telltale sign that your alternator needs service.

Electrical problems

Is your radio turning off out of nowhere? Or maybe your phone isn't charging? Or maybe your power seats feel like they're taking forever to adjust. This shows a lack of electrical power and could likely be the result of your alternator or batteries not functioning properly.

Stalling engine

If you're calling for emergency roadside service with this one, your in the right place. Your alternator might be the issue if your engine suddenly cuts power while hauling. It's likely the result of the vehicle no longer providing enough power to the ECM, which will shut down around 9.6v.

Service engine light

Don't be the guy who ignores the "Check Engine" or "ALT" light. An ounce of prevention is worth a pound of cure when it comes to your truck. Note that your dashboard might show a battery icon even when the alternator is the issue.

Squealing, Growling or Grinding Sounds

The serpentine belt is going to stretch over time. As it stretches, it stops spinning the alternator pulley properly and it results in a lack of charge. You'll notice this when a squealing, growling, or grinding sound is coming from the engine.

Book Online

Contact The Shop

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Specialized Truck Repair logo

A Truck Repair Shop You Can Trust.

We take responsibility for the quality of work we do. As mechanics, we know that every job needs to be done to 100% the best of our abilities. From quick turnaround times to efficient EOM and aftermarket parts sourcing to education and recommendations. Each and every Specialized Truck Repair shop believes in and operates by these standards.

Learn More
Low Downtime & Fast Turnaround
35+ years of experience
Open 24/7 for Roadside Service
No hidden fees or charges
Guaranteed Quality Parts
Highly-rated customer reviews
1-year warranty on labour and parts

Customer Reviews

We pride ourselves in putting our customers first. You can rest assured that our mechanics know the importance of treating every vehicle like their own.

Alom Rahman

Alom Rahman
5 Star Review
Memphis, TN

Scott serviced us late into the evening to make sure we delivered on time. Great job!

James Jones

James Jones
5 Star Review
Nashville, TN

Excellent service, in and out quickly!

K Thay

K Thay
5 Star Review
Nashville, TN

They are wonderful. We were visiting from out of state and our engine light came on. They were the only ones that said they would take the time to look at it that same day even though they were very busy. They came right out when we got there and let us know it was not an urgent problem (a glow plug was bad) and we should be fine waiting until we got home

Scott Bingham

Scott Bingham
5 Star Review
Fairview, TN

I really want to thank Kevin and all the great folks that helped me out yesterday. Y'all reinforced why I love Tennessee folks so much. Thank you! This is a first class operation!

Leah Bell

Leah Bell
5 Star Review
Springfield, TN

Came in (mid crisis) after 9 other places said no..they got my baby fixed right up and didn't take a bite out of my budget! I will be back when she needs some TLC.

Peggy Bond Kinney

Peggy Bond Kinney
5 Star Review
Nashville, TN

A trusted place to take your truck for repairs. Highly recommend.

D. Carruthers

D. Carruthers
5 Star Review
Fairview, TN

The employees at this shop did there best to Get me fixed and back rolling before closing time Saturday Evening. And they did it ! As an owner operator struggling to Survive and dodge rip off shops. Thanks so much !!

Anthony N Tabitha Nowicki

Anthony N Tabitha Nowicki
5 Star Review
Nashville, TN

Great service, got my emissions cleaned.. definitely recommend!!

J. Bayne

J. Bayne
5 Star Review
Nashville, TN

We sufferend an EGR Cooler failure on the side of I-65.  It actually grenaded on us.  After being towed to Specialized, we were repaired same day.  Thank you, thank you, thank you!

J. M.

J. M.
5 Star Review
Nashville, TN

Went in for an oil change, found out that the oil pan was cracked and also there was damage to other parts of the car and so it turned out to be a very expensive repair. Took some extra time but was able to get all the needed parts in and car is now working great. Friendly service and quality job.

24/7 Roadside Assistance

Our fleet of 6 fully-equipped trucks provide around-the-clock response to your mechanical, tire and brakes, air leaks, fluid leaks, emissions, or diagnostics problems.

615-878-9744