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Welcome to Frank Porth Chevrolet


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Everything you need to know when you buy a Certified Pre-Owned vehicle.


Before you buy a Certified Pre-Owned Chevy, Buick, or GMC, we make sure you get top-quality vehicles, $2,1351 built-in value, and all the tools you need to make an informed decision. After you buy, our Owner Care Program, including our exclusive 2-Year/24,000-Mile CPO Scheduled Maintenance Plan2, provides benefits that will give you the confidence to ensure that your purchase and ownership experience will be worry-free.

The name "Certified" has always meant passing our strict standards, but now it also means Owner Care: a vehicle benefits package that raises our already great coverage to new heights. It's why our vehicles deliver more satisfaction and certainty than any ordinary used vehicle.


All Pre-Owned vehicles must go through a strict evaluation and meet our premium manufacturing standards to earn the Certified title. Vehicles will qualify for the evaluation if they comply with the following requirements:


Feel the Certified difference with the Owner Care Program that covers a range of benefits designed to give you a hassle-free ownership experience. Ask your sales consultant for more details.

See how you can make the Certified Advantage work for you. Look for the Certified vehicle window label at dealerships to make sure you receive the benefits that only Certified can bring. OR Talk to a sales consultant today. 

  • $2,135 represents the national average value you get with a Certified Pre-Owned Vehicle from Chevy, Buick, and GMC as compared with a non-certified vehicle.
  • Covers only scheduled oil changes with filter, tire rotations, and 27-point inspections, according to your vehicle's recommended maintenance schedule for up to 2 years or 24,000 miles, whichever comes first. Does not include air filters. Maximum of four service events. See participating dealer for other restrictions and complete details.
  • Available during your warranty period. See participating dealer for details.
  • Whichever comes first. Vehicle exchange only. See dealer for details.
  • GM pre-owned vehicles equipped with OnStar hardware are eligible for 3 trial months of the OnStar Guidance Plan (excluding hands-free calling minutes). One offer per subscriber, not compatible with any other offers. Capabilities vary by model. Visit for coverage map, details and system limitations.
  • All SiriusXM services require a subscription, sold separately by SiriusXM after trial period. Fees and taxes apply. All fees and programming subject to change. Sirius, XM and all related marks and logos are trademarks of Sirius XM Radio Inc.
1.9% APR


New Chevrolet, Buick or Used Cars from Frank Porth Serving Madison, WI & Beyond

Frank Porth treats the needs of each customer with the utmost concern. We know that you have high expectations, and as a car dealer we enjoy the challenge of meeting and exceeding those standards each and every time. Frank Porth has two locations, Frank Porth Buick - Chevrolet  in Columbus and Frank Porth Chevrolet in Crivitz, WI, Iron Mountain and Kingsford, MI.

Most of us have to drive somewhere every day. For most, it may seem like a chore, we're here to tell you it doesn't have to be. More than that, we're here to prove it with an extensive lineup of new Chevrolet and Buick models and used cars - along with service, parts and specialized auto repair. We have everything you'll need to transform you everyday commute into something that you enjoy.

Perhaps the biggest reason so many drivers choose Frank Porth, serving Watertown, Columbus WI and and Crivitz, for the fact they know their vehicle search ends at our dealership. Couple our professional yet approachable staff with our vast Chevrolet and Buick lineup, featuring models such as the Silverado 1500, Malibu, Traverse, Enclave and Lacrosse among others; and you're destined to find exactly what you're looking for. To explore our winning assortment first hand, visit Frank Porth at 800 Maple Ave, Columbus, Wisconsin or our Crivitz store at 510 S. Hwy 141, Crivitz WI. And, remember you can always do some pre-buy research on new 2014 - 2015 Chevrolet and Buick models, including the Chevrolet Cruze, Equinox, Silverado 1500, Malibu , Buick Traverse, Enclave and Lacrosse online.

Frank Porth believes that while a car may be used, it should run in top condition. If it can't maintain that high level of performance than it shouldn't be sold. We have a comprehensive used car inventory from many of today's top automakers.

Visit Frank Porth today and experience our high-standard, pressure-free approach for yourself, as hundreds of drivers in greater Madison WI already have, you're certain to see the difference immediately.

Chevrolet and Buick Dealer For Car Parts, Service and Car Loans near Madison, WI

Once you find the new or used car you've always wanted, Frank Porth can get you the auto financing. We can get you the car loan in the Madison area that fits your budget. We have an expert car finance staff to help you acquire the new Chevrolet or Buick lease or auto loan today. If you have bad credit or no credit at all, let our financing team work their magic and figure out an auto loan or lease that works for you.

When you take your Chevrolet or Buick to Frank Porth near Madison, Wisconsin for auto service, you can rest assured knowing your vehicle is in the hands of professional certified technicians. Our auto service and repair team is trained extensively within the Buick and Chevrolet brands. From a simple tune up to an engine overhaul, we have you covered.   

If you've been in an accident or your Chevrolet or Buick car has suffered some kind of body damage, visit our professional Crivitz or Columbus auto body repair shop to get your vehicle back into shape. At Frank Porth collision shop we will use all the newest technological advances in paint-matching and refinishing to make your car like new again. And, if you decide you want to do it yourself, we'll happily provide you with any manufacturer certified car parts you might need - from oil filers to car batteries to tires.

To learn more about Frank Porth, our diverse lineup of new Chevrolet and Buick and used vehicles, and the extensive services we offer, please contact us today. Or, better yet, visit us in person by following step by step directions from Madison WI and other surrounding towns, including Watertown, to 800 Maple Ave Columbus, Wisconsin and 510 S. Hwy 141 Crivitz, Wisconsin.

Both of our dealerships offer drivers a wide selection of both new and used vehicles, authentic car parts, along with additional auto services. We look forward to seeing you soon!