Road trips are a lot of fun, and often unpredictable. For all the miles you will be driving we always recommend preparing for any situation. With this checklist from Harold's Used Auto Parts Inc in Philadelphia, you’ll be prepared for whatever comes your way.

At Harold's Used Auto Parts Inc in Philadelphia, PA, we understand that big trucks mean bigger risk on the road. Here are some tips to remember, to reduce the likelihood of an accident next time you’re on the job.

At Harold's Used Auto Parts Inc in Philadelphia, we understand how important safety is in the world of truck driving. The stakes are higher in a big truck; potential for damage is obviously far greater, to you, your cargo, and other people on the road. Here are some easy tips that go a long way.

At Harold's Used Auto Parts Inc in Philadelphia, we know that keeping up with required maintenance schedules is the difference between a truck that lasts a few years and a truck that stays strong for decades.

At Harold's Used Auto Parts Inc, there’s a reason we’re the top rated truck repair center in Philadelphia, PA; we do it all. While many shops shy away from the more complicated aspects of truck repair, we have the tools and people to get the job done.

Transmission slippage can be caused by a variety of factors that are sometimes difficult to pin down. From Harold's Used Auto Parts Inc in Philadelphia, PA, here’s a rundown of the more common issues that may cause a transmission to slip. Our highly trained technicians are ready to get you going with a top transmission.

All trucks, from a Chevy S-10, to the largest, heavy-duty trucks on the road, are classified into categories. Trucks are categorized by weight into classifications 1-9, and each grade comes with its own set of regulations and license requirements. Here’s a quick guide, from Harold's Used Auto Parts Inc in Philadelphia.

The Turbo on your Chevrolet, Dodge, or Ford diesel truck is an integral component of your truck’s ability to perform. Turbos affect everything from power output to fuel mileage, allowing your pickup to reach its full potential in terms of power, torque, and efficiency. At Harold's Used Auto Parts Inc in Philadelphia, PA, turbo knowledge is one of our specialties, because we understand the importance of quality turbo parts, replacements, and repair.

Have you always wondered what a spark plug does? Our team here at Harold's Used Auto Parts Inc is here to help you out. It's simple in theory but does quite a lot of work for such a small piece of equipment. Your spark plug forces electricity to arc across a gap like a bolt of lightning at high voltage and fits into your engine's cylinder head, where it “sparks” to ignite the fuel and creates combustion within your engine. Without it, you wouldn't be able to drive your car or truck. 

At Harold's Used Auto Parts Inc in Philadelphia, we know an important part of your ability to care for your transmission lies in your knowledge about how it works. Here is some information on the tow button, if your car, truck, or SUV is equipped with one.

At Harold's Used Auto Parts Inc in Philadelphia, routine maintenance and repair isn’t the only thing we do. For custom parts installation, you can also count on us. Common modification enthusiasts do is swapping to a short-throw shifter; but what actually is a short-throw shifter, and what does it do?

If you own or maintain a fleet or commercial truck, you are likely already familiar with the term ASE certified technician. But what does ASE mean, and why is it important? Harold's Used Auto Parts Inc in Philadelphia, PA has the answer.

At Harold's Used Auto Parts Inc in Philadelphia, we know that few problems are simultaneously as simple and confusing as a bad ground connection on your car, truck, or SUV. Here’s a look at some symptoms of a bad ground, and what you can do to correct it.

Unless you use your vehicle to tow every day for work, odds are you haven’t paid much attention to your truck, SUV, or crossover’s towing capacity. Maybe you’re looking to buy a boat for some summer fun or just need to rent a trailer to get your belongings from one dwelling to the next. Whatever the reason for pulling something behind your vehicle, it’s important to get a firm grasp on what exactly your towing capacity means. Understanding how each of the components in your vehicle contributes to your overall tow rating can keep you from putting undue stress on your rig and keep you and your family safe.

Trucks aren’t like cars...your average personal vehicle usually holds about 5 quarts of oil, and you are supposed to change it every 3-5k miles. However, the same logic doesn’t apply to large trucks. At Harold's Used Auto Parts Inc in Philadelphia, we know how important proper oil changes and diagnostics are to keep your truck on the road, for hundreds of thousands of miles. Here’s what you need to know:

If you drive a lightweight car, truck, or SUV, the torque converter you have installed is probably just fine. For those of you with more heavy-duty applications, like high horsepower setups or towing rigs, the stock converter may not be enough. At Harold's Used Auto Parts Inc in Philadelphia, PA, we can help with that.

Tire pressure may seem innocuous enough, but at Harold's Used Auto Parts Inc in Philadelphia, we know how much of a difference correct tire pressure makes. Tire pressure checks are just one of many regular service items we check when you bring your truck in for servicing, but it’s one that’s more important than you might think.

Currently, the future of electric vehicles looks promising - though it won’t likely replace your Duramax, Powerstroke, or Cummins engine any time soon. Still, we don’t know what the immediate future holds. This battle was waged once before in the past, with combustion engines taking the throne over electric power. Here’s a brief history of electric automobiles, from Harold's Used Auto Parts Inc in Philadelphia, PA.