Win the Mystery Box!

This my friends, is the Mystery Box!

There is something valuable in this box, but it remains a mystery. All we can say is, you want what’s inside the box. Trust us, it’s really good. And we will be giving it away to one of our lucky social media followers on January 31st!

Throughout the month on January we will be revealing clues about what the mystery box might be. You can even ask us for clues directly on our Facebook, Twitter and Google+ pages! More importantly, you get an additional entry for every time you share, retweet or plus one on of our social posts. That’s right, that gives you even more chances of winning!

Increase your chances of winning when you…

1. Like or interact with our Facebook Page.

2. Follow or interact with our Twitter Account.

3. Follow or interact with our Google+ Page.

And remember the Box. The Mystery Box. YOU. WANT. THE. BOX.

GMPartsNow Introduces New Mobile Site

Ordering Genuine GM Parts Just Got a Facelift

We’re excited to announce the launch of our new, innovative, mobile friendly website. The new mobile website offers a personalized buying experience that’s both easy to use and convenient. You can now access GMPartsNow from any phone, anytime, anywhere! Buying GM parts and accessories for your vehicle has never been easier. We are honored to provide our customers with a mobile friendly website that better connects them with our huge inventory and handy diagrams. This is more than new mobile website; it also represents a new era for GMPartsNow. We are bigger, superior and more responsive than ever.

Mobile Website

The new GMPartsNow mobile friendly website is available on any phone or device. It offers several new features, including:

  • Advanced search – Our advanced search options allow you to browse, compare and purchase parts directly from your mobile device. Simply choose the year, model and make of your vehicle to view the related parts we have in our inventory. You can also search by VIN or part number.
  • Live support – We now offer live phone and email support directly from our mobile site. Phone lines are available Monday through Friday, 8:00 a.m. to 6:00 p.m. Eastern Standard Time. Access live support by clicking the question mark located at the top of the home page.
  • Easy navigation – Our mobile site it simple to use and easy to navigate. Finding GM parts and accessories for your vehicle has never been easier.  You can search for parts, check your order status and view your shopping cart all from our user friendly home page.
  • Model diagrams – Find helpful diagrams with every part you search for. These visual diagrams are straightforward and are available to help with part installation. You can also save these visual diagrams to your phone and access them anytime, anywhere.
  • Text updates – Receive text updates with your tracking number information. The text will be sent straight to your mobile device once the package has been processed and shipped from our facility. In order to take advantage of these updates you must create a user profile first.
  • User profile feature – Create a user profile in less than five minutes. Creating a use profile is simple. This feature allows you to save searches and receive text message updates. A user profile also saves all your shipping information which makes ordering parts for a second time a breeze.

How does it Work?Step 1 Step 2

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25% Markdown on All GM Accessories

We are currently offering a huge promotion on our entire GMPartsNow GM Accessories Catalog. Save an additional 25% off regular dealership prices starting today! The GM Accessories Catalog is your online source for Chevrolet, GMC, Cadillac and Buick accessories. Customize your vehicle with top of the line floor mats, remote starters, spoilers, wheels, splash guards and trim. The GM Performance Catalog allows you to search, view and buy vehicle accessories from any device including phones, tablets and desktops. Finding accessories for your vehicle has never been easier.

If you are searching for genuine GM accessories, look no further than GMPartsNow Accessories Catalog. Take advantage of online discounted prices and our new promotion by visiting our website today. Make it personal with GMPartsNow Accessories Catalog! Click and save. It’s that simple.

View our entire GM Performance catalog online by visiting:

New GMPartsNow Accessory Catalog

Introducing The All New GMPartsNow Accessory Catalog

We are extremely excited to launch our new GMPartsNow Accessories Catalog! Finding accessories for your vehicle has never been easier. Our new online catalog allows you to search, view and buy vehicle accessories from any device – phones, tablets or desktops.Take advantage online discounted prices and a easy to use visual search. Make your vehicle personal again with all your favorite accessories such as floor mats, remote starters, spoilers, wheels, splash guards and trim.

Why Choose GMPartsNow Accessory Catalog?

You can now access the GMPartsNow Accessory Catalog anywhere, at anytime, on any device.  You’ll love our new interactive 3D view which allows you to preview accessories on your vehicle before making a purchase. Top features include our accessories idea guide, easy to use search guide and interactive content.

 How it Works
Our new online catalog was designed with mobility and simplicity in mind. With our easy to use search guide, you are able to find exactly what you need in a matter of seconds. Start by selecting the year, make and model of your vehicle or enter your VIN. You can also search by part number. Once you have provided the necessary information, you will find all the accessories that can be added to your vehicle. It’s as simple as that!

Click HERE to see it for yourself!

We’re now taking your questions on Facebook

In addition to this how-to blog and our YouTube Channel, we’re now taking your questions on our Facebook Page.  Just post a message and one of our parts experts will answer you directly on our page. We’re here to help, even if you aren’t a customer. Keep in mind, we can’t diagnose problems to a vehicle that we can’t inspect ourselves. But we can give you general guidance on part availability, part specs, differences between part manufacturers, car maintenance questions, and sometimes even part installation tips. If you are a customer, we’d be glad to answer questions about our service too.

You can also use our Facebook and Youtube accounts to let us know what tutorials would help you out the most. Drop us a line with your top auto parts and car maintenance questions and we will make video tutorials and how-to guides for you!

First NHRA Stock Eliminator Victory on the Books for Dave Connolly and the COPO Camaro!

This weekend marked the first event for Cagnazzi Racing, driver Dave Connolly, and our blistering 2012 COPO Camaro on their pavement scorching quest for the 2013 NHRA Stock Eliminator series championship. Consequently…the team logs their first massive VICTORY as well!

Dave made some excellent time this weekend at Atlanta’s NHRA Lucas Oil Series in the Camaro, beating out (among others) Mitch Knight’s ’67 Barracuda, Butch Payne’s ’97 Firebird, and Robbie Shaw’s ’01 Firebird. Things really heated up when he bested Jim Hidalgo and his ’91 Corvette. The final round was over before it even began, as Connolly’s only competition left, Merrill Schrimscher, red-lighted, awarding Connolly the big win before he could even hit the accelerator. Dave and the COPO were so on point this weekend though, that even if Schrimscher were driving an F-14 Tomcat with a Turbo button he still would have come in second.

Before we get to the winner’s circle though, a few words about the ’12 COPO Camaro and why we here at decided to sponsor it: it is absolutely the fastest factory Camaro ever built. It seriously is. we’re not making that up. Built to honor the fabled ’69 Gibb COPOs of yore, the 2012 COPO Camaro is designed to NHRA specifications and can do the quarter mile in 8.88 seconds. It includes a solid axle and full chrome moly roll cage, and a fully aspirated 7.0L 427 V8 engine built with the sole purpose of total domination. Don’t expect to see Dave showing off at the local Whippy Dip any time soon, this baby isn’t even street legal. As for…why wouldn’t we sponsor a beast like that?

“I’m ecstatic to get the first COPO event win, it was a goal of mine from the first time I sat in this car. It’s a great race car, and I really can’t thank all the guys at Chevy enough for building this Camaro.” Dave says about the car. We couldn’t be more excited to have such a perfect partnership, and can’t wait to keep tallying up the W’s on our way through the NHRA Stock Eliminator series this season.

A big CONGRATULATIONS to Dave Connolly and Cagnazzi Racing for your big win this weekend in Georgia, we can’t wait to see what happens next! Excellent job! to Sponsor Future 2013 NHRA Stock Eliminator Champion is thrilled and excited to announce its partnership with Victor Cagnazzi racing and NHRA champion driver Dave Connolly as he takes the fiercest COPO Camaro ever built on a run for the 2013 NHRA Stock Eliminator Championship this season.

We’re not even kidding…this is the coolest thing ever. Cagnazzi racing is legendary in the world of stock car racing, Dave Connolly is a veteran dominator behind the wheel, and the beautiful 2012 COPO Camaro is the best factory-built race car ever to roll off of a GM line. It placed in last year’s NHRA Nationals with Dave behind the wheel, and now the team wants a piece of the Stock Eliminator. Here at, we couldn’t be more excited to be a part of it!

In addition to the (at least) seven point meets associated with the Stock Eliminator Championships coming up this summer for Dave and the Camaro, he will also be taking part in a series of shootout events against Mustangs, Chargers, and even other COPO Camaros, so in between victories over his NHRA competition, we’ll be able to watch the Camaro dominate its competitors as well.

We anticipate a season full of victory, domination, and hot nasty speed here this summer, and are immensely proud to sponsor Cagnazzi Racing, Dave Connolly, and the hottest race car since the ’69 COPO. Stay tuned regularly, as we’ll be keeping you updated on the action, all the way to the Finals.

Here is a list of tentative dates where Dave Connolly will be racing the GMPartsNow Camaro in NHRA events:

  • May 23-26,  Commerce, GA (Division 2 race)
  • May30-June 2, Englishtown NJ (Toyota Summernationals)
  • June 7-9, Chicago IL (Division 3 race)
  • June 14-16, Bristol, TN (Ford Thunder Valley Nationals)
  • June 27-30, Chicago IL (O’Reilly Route 66 Nationals)
  • July 4-7, Norfolk VA (Summit Nationals)
  • Aug 28-Sept 2, Indianapolis IN (US Nationals)
  • Sept 5-8, Earlville IA (Division 5 race)
  • Sept 13-14, Charlotte NC (NHRA Nationals)
  • Oct 11-13, Reynolds GA (Division 2 race)

See Also:



The World of Warped Brake Rotors: The Truth Behind the wub wub wub

Are you ready to have your mind blown off? Your warped brake rotors don’t actually warp. There is a long, involved science story explaining this ahead, so be ready. We’re going to get technical.

While heat transfer is indeed an issue that causes brake judder from rotor runout, it is not because the rotors themselves become “warped”, a common diagnosis in your average auto shop.

brake rotor runout

Essentially, brakes work something like this:

Because there are two types of friction happening between your tires and the road, there are two types of friction happening between your brake pads and your rotors. Friction is the mechanism that converts dynamic energy into heat. Let’s start from there.

Your tires create friction with the road in two ways: when the elastic rubber tire compound grips irregularities on the road surface, and when molecular adhesion occurs between the rubber and the road, where rubber is transferred to the road surface. Because of the way your tires react to the road and vice versa, your brake pads will interact with both tires and rotors two different ways, and create two different types of friction. Discerning what type of driving you do, and therefore which type of friction you’ll be experiencing more of is crucial when choosing the right type of brake pads for your vehicle. To put it simply, are you going to be hauling a** everywhere, or driving within the confines of the law (conservative)?

The two types of friction brake pads can cause are abrasive friction, and adherent friction.

Abrasive friction involves the breaking of the crystalline bonds of both the pad material, and the cast iron of the disc. The breaking of these bonds generates heat, ergo friction. With this type of friction, the bonds between the disc material and the pad material are permanently broken, and the harder (disc) wears the softer (pad) away. When the pads reach their effective temperature limit, they start to wear (transfer material from pad to disc) quickly, and randomly spread. This causes runout, roughness, and judder as the brake pads wear.

Adherent friction happens when the pad material diffuses across the pad and the disc, forming a super-thin but uniform layer of pad material on the surface of the disc. With both pad and disc being comprised mostly of the same material, the bonds will break and reform continually. While this still creates runout, it is much more uniform, and even across the disc than abrasive friction.

While it is impossible to have a purely abrasive or adherent brake pad, most material formulas found for everyday driving is abrasive enough to keep the disc surface even and smooth, but still uniform enough to keep them from vibrating the second you put them on your car. Choosing which type of brake pad will minimize rotor runout best will depend on where your brake pads optimize at which temperatures. After-market bargain-type organic or semi-metallic brake pads tend to be more abrasive than adherent, causing them to be severely limited by temperature (the faster you drive, the harder you brake, the hotter they get). Luckily today, most higher-end, OEM, or metallic carbon racing pads intentionally utilize one type of friction versus the other, and are able to be stable through much higher temperatures.

Sadly, there is no such thing as a brake pad that performs optimally in both street and racing capacities, and if you use one but do the other, they will wear unevenly and cause rotor damage. That doesn’t mean by any means that if you tend to be on the Fast and Furious side you should get racing pads just in case. These pads are designed to maximize at much higher temperatures than regular driving brakes, thus simply won’t work in lower temperatures. What we recommend for such drivers is high-end ceramic pads, you’ll just go through them more frequently than a normal everyday driver. And even if you can’t feel a vibration, have your rotors resurfaced every time you replace your pads. If you get to the point where you can feel them, than they need to be replaced.

Regardless of what kind of pad and rotor you use, they’re not going to perform if they’re not properly-perfectly- installed. If they’re not, right out of the box they will be producing uneven deposits, which get hotter than the metal beneath it. Every time one of these deposits comes into contact with the pad (thousands of times per minute as the wheel turns), the overall temperature increases. As this happens, an extremely hard iron carbide called cementite begins to form out of the cast iron disc, which will increase brake roughness and uneven wear, tearing through pads and rotors even quicker.

So if the guy doing your brakes tells you that you’ve got warped brake rotors on your hands, stop him right there, explain all of that science stuff we just went through to him, and then take your car to someone else. When choosing the proper pads for your vehicle, choose high-quality aftermarket or OEM pads, have your rotors resurfaced every time you replace pads, and don’t buy racing pads for your daily driver, even if the driving that you do daily is super fast. Stay safe, Road Warrior!

Brake Rotor Resurfacing vs Replacing. What Exactly Can I Get Away With?

Brake Rotor Replacement vs Resurfacing

We’ve all heard the sound before; worn, cracked or “warped” brake rotors going wub wub wub wub wub wub wub every time we hit the brake pedal. Brake rotors are among the more frequently replaced parts on your vehicle, and one of the most important safety-wise to maintain. You know how we here at GM Parts Now feel about safety – we LOVE it. We’re all about it. Yeah safety!

So you’ve been researching having your messed-up brakes replaced, and are wondering if you could just get your rotors resurfaced instead to save a little money. Brake rotor resurfacing is when a mechanic or technician uses a lathe (or sends them somewhere to get laithed) to grind down your existing brake rotors and even out the run-out to get you a little more mileage before replacing them. So is it worth it to have this service provided? Should you resurface your rotors, or have them replaced? Let’s take a look.

Those tiny grooves are definitely not groovy. Dig?

First off, don’t even entertain the notion of having your rotors resurfaced unless you find a place with an on-wheel lathe. These are quicker, more accurate, and your service tech can correctly resurface without removing the rotor, or (god forbid) have to send it somewhere off site. Obviously, don’t even bother if your brake guy has his resurfacing done off-site. He’ll have to send them somewhere else, which will leave you vehicle-less for days which is a big old hassle unless you’ve got a warehouse full of extra cars somewhere on the grounds of your massive estate.

So considering you found a brake place that uses an on-wheel lathe for resurfacing, here is the easiest scenario to help you judge whether to have your rotors resurfaced or replaced. If you are in there for your 10,000  mile maintenance brake job, than by all means have them resurfaced. A lot of places will even resurface them for free or a very small fee when you buy pads. If it’s a regular maintenance thing, than resurfacing them once or twice is perfectly fine.

If you’re cruising along and feel a little pulsation or hear the wub wub wub wub when you put your foot on the brake, you’re rotors are not effective and should be replaced. Plain and simple. Pulsating brakes can be caused from various issues with your rotors like cracking, uneven run-out (wear), heat damage, bad alignment, or using low-quality or the wrong brake pads. Resurfacing may temporarily alleviate some of these problems, especially uneven wear, but grinding off a layer of rotor surface will only leave you with thinner rotors, and no guarantee that they won’t continue to wear poorly, or the wub wub wub wub-bing will be corrected.

Now I understand frugality just as much as the next guy. Who wouldn’t want to save a few bucks here and there? As pro-discount as I am, I don’t understand why someone would try to cut corners when it comes to brakes. Being all the way pro-safety, your brakes are VERY IMPORTANT in keeping you, your passengers, other drivers, mailboxes, and that random guy on a bike safe. Like the most important. Probably not the wisest thing to skimp on and risk shoddy work, especially if it leaves you stranded somewhere, or find yourself in a situation like this:

Considering the cost of rotors these days, resurfacing and replacing can be as little as a $50 difference. If you’re just keeping your ship tight with regular brake maintenance, resurfacing is fine and will get you a few extra miles on your rotors. If you’re noticing a problem, sound, or vibration, than you’re dealing with a bigger problem and should replace them. We try to keep it simple. Safety first!



Signs you Need to Replace your Brake Pads

Replace your Brake Pads! So you’re cruising down the road at 120 and out jumps an opossum from the various foliage on the side of the road. BAM! You don’t want to wait until this crucial moment to find out whether or not its time to replace your brake pads, now do you?

Ok, so you’re probably not going that fast (if you are, you’d better be inspecting those brake pads more often than most), but your brakes are another one of those easy maintenance items that can be extremely important when you need them, and yet somehow easily overlooked. Don’t wait until there’s smoke coming from the tires every time you hit the brakes, keep an eye on them always and have them done at the first signs of too much wear.

How can you tell if your brake pads need to be replaced? Here are a few things to keep an eye out for when inspecting your brake pads, ways to tell on the road if they’re starting to wear, and a few tips for inspecting, replacing, and maintaining them.

1) Your car will tell you if it’s time to get new brake pads. In fact, it will scream at you. Built into all modern brake pads (if you don’t have them, than you really, really need to get new brake pads) you will find a little metal plate called an indicator. When the rubber on the brake pad wears down to a certain level, the indicator scrapes along the rotor and produces a squealing sound loud enough to hear while driving with the windows up. When you hear this sound, it’s time to replace your brake pads. Simple.

2) If your brake pads are wearing unevenly or something weird got into your brake fluid, your vehicle might pull to one direction when you go to brake. If this is the case, you might need to have a brake line inspection or flush along with your new pads.

3) Any time you hear metal on metal that’s bad. When it grinds and squeaks like metal on metal when you go to brake, you definitely need new pads. Whenever you hear metal on metal rattling around anywhere on your vehicle, take it in to have it looked at. Brakes are probably the easiest fix when it comes to that grind.

4) If you can feel a pulsing or vibration when you push the brakes, than your rotors are getting warped, and will chew up your brake pads faster than you can put new ones on. When you get your brakes replaced (which you will need to do), ask your service person to rotate the tires as well, and inspect them to prevent future premature rotor wear.

5) Keep an eye on your tires for excessive brake dust. Brake dust shows up as your brake pads wear down. It’s the scummy black stuff that you see here:

When you start to see in abundance, it’s a sign that your pads are wearing quickly, and it’s likely time to replace them.

Check out Jimmy the Parts Guy in the above video for some helpful tips/indicators for drum brakes in the video above.

Most importantly…if you have any doubt whether or not its time to replace your brake pads, please err on the safe side, and get them looked at by a professional. Better to be over cautious in this case, instead of waiting until you absolutely need them.