Certified Used GMC Sierra 1500 for Sale in York, PA

Certified Used GMC Sierra 1500 for Sale in York, PA

Have you heard of the term certified vehicle before, but still aren’t fully clear on its meaning? Well, you can visit our numerous Thornton Automotive dealerships to check out one in person if you want to see what all the excitement is about firsthand. Before that though, we’ll go over the basics here and discuss how a certified GMC Sierra 1500 can be an option if you’re searching for a quality used full-size pickup truck.

Certified Vehicles

Our certified vehicles set themselves apart from the typical pre-owned options by undergoing a rigorous multi-point inspection of various features and hardware. We do this to guarantee a higher level of quality and ease the concerns that you may have about purchasing a car that’s been owned previously. The last thing you’d want is to drive off our lot in something that’s had a long maintenance history full of issues. Rather, we want the certified vehicle you buy from us to last, and provide a standard of performance and comfort that you deserve. And of course, you’ll still be able to enjoy all the regular benefits that come with a normal used vehicle, so there are only upsides to going with a certified option.

Financing

Putting together a budget that’ll account for the expenses you already pay on a monthly basis is difficult to do without the proper tools. That’s why we provide our Payment Calculator, which can figure out the price of a vehicle you can afford, as well as what monthly installments will be within your range. This way, you won’t have to do any guesswork when it comes time to make a decision. To further that point, we also have our Finance Application feature, which allows you to fill out a form with all the necessary information our team will need for review. We’ll then be able to make the most accurate recommendations about what loans you may qualify for.

The GMC Sierra 1500

For truck enthusiasts who like to configure their driving setups to the max, a used GMC Sierra 1500 is one option that excels in this area. It offers competitive powertrain options, phenomenal towing capabilities, and an interior that’s just as comfortable as some of the best SUVs out there. You’ll be able to access all your controls with ease and set up your preferred infotainment media for those long drives through the York area. We also can’t ignore the fact that this truck comes equipped with advanced technology that makes towing a more user-friendly experience from start to finish. So, when it comes time to haul a heavy load to the York Memorial Park Complex, your certified used GMC Sierra 1500 will be ready for the task. When you’re ready to take it for a test drive, visit our location during our business hours!

Learn More About the Benefits of Certified Used Vehicles!

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Disclaimer

*All pricing and details are believed to be accurate, but we do not warrant or guarantee such accuracy. The prices shown above may vary from region to region, as will incentives, and are subject to change. Vehicle information is based off standard equipment and may vary from vehicle to vehicle. Call or email for complete vehicle information. All specifications, prices and equipment are subject to change without notice. Prices and payments do not include tax, titles, tags, finance charges, documentation charges, emissions testing charges, or other fees required by law, vehicle sellers or lending organizations.

Based on EPA mileage estimates, reflecting new EPA fuel economy methods beginning with 2008 models. Use for comparison purposes only. Do not compare to models before 2008. Your actual mileage will vary depending on how you drive and maintain your vehicle.

While every effort has been made to ensure display of accurate data, the vehicle listings within this website may not reflect all accurate vehicle items. Accessories and color may vary. All inventory listed is subject to prior sale. The vehicle photo displayed may be an example only. Vehicle Photos may not match exact vehicles. Please confirm vehicle price with Dealership. See Dealership for details.

Testimonials

Dawn Renee
Dawn Renee
GOOGLE
3-7-2026
Full Star Full Star Full Star Full Star Full Star

Thank You Tyler for all you did for us to put us in our new ride!!

Sherree Carn
Sherree Carn
GOOGLE
3-6-2026
Full Star Full Star Full Star Full Star Full Star
Candice Sipes
Candice Sipes
GOOGLE
3-5-2026
Full Star Full Star Full Star Full Star Full Star

Above and beyond service from sales staff!!!

Ashley Moul
Ashley Moul
GOOGLE
3-5-2026
Full Star Full Star Full Star Full Star Full Star

Had a great experience working with Tyler! He’s very knowledgeable and doesn’t pressure you!

Angeline Smith
Angeline Smith
GOOGLE
3-4-2026
Full Star Full Star Full Star Full Star Full Star

Mike made everything super easy , and didn’t just throw me in any vehicle he listened to my wants and needs and put me in the best option possible for what i needed and they had available !

Yvonne Shank
Yvonne Shank
GOOGLE
3-4-2026
Full Star Full Star Full Star Full Star Full Star
Harry Robinson
Harry Robinson
GOOGLE
3-4-2026
Full Star Full Star Full Star Full Star Full Star

My sales team was great. My salesman Tyler Mcgurk was polite and friendly and helped us find the right vehicle. Great place to get a vehicle. Thank you

Matt Moul
Matt Moul
GOOGLE
3-3-2026
Full Star Full Star Full Star Full Star Full Star

Great experience working with Tyler! He helped take all of our wants and needs and found the perfect truck that checked all of our boxes. He also assisted us with our trade-in as one effortless transaction. Highly recommend if you want both an A+ selection as well as white glove service!

Aleta Gipson
Aleta Gipson
GOOGLE
3-3-2026
Full Star Full Star Full Star Full Star Full Star

Tyler helped me with buying my dream car. He was very knowledgeable and polite and made me feel great about my purchase. Chuck was also very helpful and kind. Definitely recommend purchasing your next vehicle here!

Nikki Jones
Nikki Jones
GOOGLE
3-3-2026
Full Star Full Star Full Star Full Star Full Star
Lynn Winters
Lynn Winters
GOOGLE
2-28-2026
Full Star Full Star Full Star Full Star Full Star

The salesman was very helpful, polite, and gave all the information that was needed

Clarissa Avery
Clarissa Avery
GOOGLE
2-22-2026
Full Star Full Star Full Star Full Star Full Star

Tyler is so patient and kind! Thank you Mr. Drive Home Happy😊

Brian Mersing
Brian Mersing
GOOGLE
2-22-2026
Full Star Full Star Full Star Full Star Full Star

Always a pleasant experience, great group of sales people and up!

GW Blaylock
GW Blaylock
GOOGLE
2-21-2026
Full Star Full Star Full Star Full Star Full Star

Thornton automotive in Dover Pa is a great dealership. They understand the art of a deal and make you comfortable while going through it. They also have all the services to go along with purchasing a vehicle. My salesman Russ was awesome. He was easy to deal with and met my needs to get a deal done that was comfortable for me.

Michael Smith
Michael Smith
GOOGLE
2-20-2026
Full Star Full Star Full Star Full Star Full Star

Had an amazing experience as always I've gotten a few vehicles from the dover pa location and the hole team is amazing there but my man mike took his time and got me an absolute crazy deal and really put in the work for me and even took the time to walk me through things I didnt understand completely 10 out of 10 grate please to buy a first vehicle or a work vehicle I would absolute recommend to anyone ask for mike big dude but he's harmless lol

charles schultheis
charles schultheis
GOOGLE
2-20-2026
Full Star Full Star Full Star Full Star Full Star
Derek Barnes
Derek Barnes
GOOGLE
2-18-2026
Full Star Full Star Full Star Full Star Full Star

Scott was excellent throughout the process. Did whatever he could to make everything as easy as could be!

Todd Moul
Todd Moul
GOOGLE
2-17-2026
Full Star Full Star Full Star Full Star Full Star

If you're in the market for a vehicle, I strongly recommend visiting Thorton Automotive in Dover, PA. My experience working with Tyler McGurk to find a truck was great. It's nice to visit a dealership and not be met with the high pressure sales approach. Tyler was very polite and knowledgable. I told him what i was looking for in a truck, and he found exactly what i was looking for.

Robert Emig
Robert Emig
GOOGLE
2-17-2026
Full Star Full Star Full Star Full Star Full Star
Evan Davis
Evan Davis
GOOGLE
2-13-2026
Full Star Full Star Full Star Full Star Full Star

They made buying a vehicle very easy and simple they were incredibly friendly and helpful with great value

Lamar EIFERT
Lamar EIFERT
GOOGLE
2-12-2026
Full Star Full Star Full Star Full Star Full Star

I bought a beautiful F150 platinum edition from Thornton, Automotive Group and had a wonderful experience. Mike Eachus, my sales person, was great to work with. He was friendly, honest, and did not aggressively force us into a sale. It was a very comfortable experience. I believe the whole organization honestly wants to do the best for their customers and are trustworthy. That means the most when buying a used vehicle. They worked with us in the financing and we’re friendly throughout the whole process keeping our best interest in mind. I have already recommended them to two people. It’s a good place to do business on such a large purchase.

chris brunk
chris brunk
GOOGLE
2-12-2026
Full Star Full Star Full Star Full Star Full Star

Scott S and the finance group were so flexible to get us into the car we wanted at an affordable price. For the first time in about 8 years my wife didn't have to settle and we got the car of her dreams! Thanks Scott! Thanks Finance team! Hope you found more license plate screws. This is the third vehicle we bought from them all the way back to when it was Brookside. Always reliable cars.

John DeLack
John DeLack
GOOGLE
2-7-2026
Full Star Full Star Full Star Full Star Full Star

Very friendly and helpful when it came to helping my

jdelack75
DEALERRATER
2-7-2026
Full Star Full Star Full Star Full Star Full Star

Very friendly and helpful when it came to helping my daughter find and purchase her first car. Mike was extremely professional.

Mike Wes and Brian made the buying process a breeze!

agreco1954
DEALERRATER
2-6-2026
Full Star Full Star Full Star Full Star Full Star

Mike Wes and Brian made the buying process a breeze! Friendly service and great follow up! Will do business with them again!

Melissa Brooks
Melissa Brooks
GOOGLE
2-3-2026
Full Star Full Star Full Star Full Star Full Star

I recommend anyone shopping for a new car to stop by Thornton's and check them out. The customer service was outstanding, the staff are polite, knowledgeable, and friendly. Please ask for Russ B. when you stop in and I promise you, you won't be disappointed when you leave. I haven't purchased a new car in a long time and he made the process smooth. I am very happy with my purchase and I know you will be too!

Everey was friendly and do whatever it took to make

Jimbo8657
DEALERRATER
2-2-2026
Full Star Full Star Full Star Full Star Full Star

Everey was friendly and do whatever it took to make things right with my concerns

Eric Shepperson
Eric Shepperson
GOOGLE
2-2-2026
Full Star Full Star Full Star Full Star Full Star

Mike Stevens and the whole team got me right A1 service

Khole Brown
Khole Brown
GOOGLE
1-31-2026
Full Star Full Star Full Star Full Star Full Star

We started truck shopping around 2 months ago. Thornton was on our list of dealers to stop at. We went in on a weeknight, and met Tyler. Tyler was knowledgeable and knew what we were looking for. Over a few weeks we test drove multiple trucks, and finally found the one. Through the whole process, Tyler was helpful, and patient. We also spoke with Chuck and Wes, and they provided even more knowledge to us. Overall, our experience was positive. We will recommend Thornton to anyone who asks about dealers!

Jody
Jody
GOOGLE
1-29-2026
Full Star Full Star Full Star Full Star Full Star

Very good experience. Mike was great to work with. He sold me a 2016 Chevy Silverado for a fair price. I bought a vehicle years ago when it was Brookside, still have it with no problems. I know several other people who purchased from Thornton. Would recommend Thornton if you're looking for a vehicle.

Evan Skolaski
Evan Skolaski
GOOGLE
1-29-2026
Full Star Full Star Full Star Full Star Full Star

Arrived late on a Friday shortly before closing, was immediately greeted by friendly staff. Mike was our consultant for the purchase of our F150. He was knowledgeable, personable and was very accommodating to our questions and concerns. We will definitely be working with Mike and Thorton Automotive for future purchases.

Riley Robey
Riley Robey
GOOGLE
1-27-2026
Full Star Full Star Full Star Full Star Full Star

Thank you so much to the Thornton team in Dover. It was a pleasure to meet Mike and work toward a decision we both felt good about. Purchasing a new vehicle can look like a daunting task, but I felt that Mike was able to help me find the truck that best fit my needs and feel good about my decision. Thank you so much!

Shauna Pepperday
Shauna Pepperday
GOOGLE
1-27-2026
Full Star Full Star Full Star Full Star Full Star

I had a great experience working with Scott! He helped and didn't pressure me into the purchase. Allowed me time to think and answered all my questions. Definitely recommend him and Thorton Chevrolet in Dover to all my friends looking for a new vehicle!

Abu Mavis Sesay
Abu Mavis Sesay
GOOGLE
1-25-2026
Full Star Full Star Full Star Full Star Full Star

Ryan was very professional, respectful and knowledgeable. The whole stuff was very professional. Thank you guys. 2000%👍

Stephen McNamara
Stephen McNamara
GOOGLE
1-21-2026
Full Star Full Star Full Star Full Star Full Star

Awesome place to get a really nice used truck. No BS just kind and knowledgeable people there. Ask for Ryan and his manager chuck was a great help as well.

Lizette
Lizette
GOOGLE
1-20-2026
Full Star Full Star Full Star Full Star Full Star

awesome team ! 10/10

Kevin Mehrkens
Kevin Mehrkens
GOOGLE
1-19-2026
Full Star Full Star Full Star Full Star Full Star

Absolutely wonderful experience with the staff at the Dover facility. They were low pressure, very informative, very helpful, and made a deal that worked for my needs. Scott, my salesman, was a top tier professional. He even sent a handwritten thank you note wishing me the very best with my new Jeep.

Randall Kilgore
Randall Kilgore
GOOGLE
1-19-2026
Full Star Full Star Full Star Full Star Full Star
Julieanna Rook
Julieanna Rook
GOOGLE
1-15-2026
Full Star Full Star Full Star Full Star Full Star

Russ is the Best ! , he gave me snacks while I was waiting on my uncle to get his car !

Jerramey Luckenbaugh
Jerramey Luckenbaugh
GOOGLE
1-15-2026
Full Star Full Star Full Star Full Star Full Star

Love it or leave it is Thornton Automotive's exchange policy and they certainly stand by that statement. I purchased a 2016 RAM 1500 Big Horn Jan 15 ,2026. I then returned it within 3 days bc I was not 100% happy. The process was easy and simply that, Love it or Leave it! Wes Myers the mgr asked me what he could do to keep me happy so, I did purchase the following week Jan 22, 2026 a 2019 RAM 1500 Big Horn. The deposit I had on the 2016 was transferred to the 2019 purchase with ease. Wes also hooked me up with some extras for the new truck! Highly recommend Thornton Automotive Dover, Mgr Wes Myers, and salesman Russ Barra if you are looking for your next vehicle.

This is my second purchasing experience with Thorton in

Weazysteelersfan
DEALERRATER
1-13-2026
Full Star Full Star Full Star Full Star Full Star

This is my second purchasing experience with Thorton in Dover, PA. I would recommend them to anyone that is looking for a vehicle!

Flor Silva
Flor Silva
GOOGLE
1-13-2026
Full Star Full Star Full Star Full Star Full Star

Everyone was very nice, Russ was patient, kind and easy to communicate and work with. The place had many options in cars and the test drive was good, smooth transition all around. Felt no pressure to buys definitely recommend this place for a car! Thank you Russ!!!

Ixa Padilla
Ixa Padilla
GOOGLE
1-13-2026
Full Star Full Star Full Star Full Star Full Star

Such a great customer service!!! Got what I was looking for and the process was super fast! Scott was his name!! Ask for him 🫶🏽

Beverly Miller
Beverly Miller
GOOGLE
1-13-2026
Full Star Full Star Full Star Full Star Full Star
Alejandro Perez
Alejandro Perez
GOOGLE
1-10-2026
Full Star Full Star Full Star Full Star Full Star
Tamara Whitney
Tamara Whitney
GOOGLE
1-6-2026
Full Star Full Star Full Star Full Star Full Star

(Translated by Google) undefined (Original) Mike E was great! Very knowledgeable and helpful!

ken knox
ken knox
GOOGLE
1-5-2026
Full Star Full Star Full Star Full Star Full Star

(Translated by Google) undefined (Original)

Everyone was professional and courteous during our visit.

chumcj
DEALERRATER
1-15-2026
Full Star Full Star Full Star Full Star Empty Star

Everyone was professional and courteous during our visit. Vehicle so far meets our expectations and we are very happy

Sold me a car on half a tank of gas.

gloverterence
DEALERRATER
2-28-2026
Full Star Full Star Empty Star Empty Star Empty Star

Sold me a car on half a tank of gas.. Took 3 days to complete sale. Car salesman told my wife I got you an extended warranty with saying it was over 3,800 dollars more til I seen the paperwork. I wouldn’t buy a car here again. Felt rushed out the door rather than taking the time to be informed about everything.

neil hall
neil hall
GOOGLE
3-2-2026
Full Star Empty Star Empty Star Empty Star Empty Star

So it's been a few weeks and wanted to leave an honest review. So, at first the experience here buying a vehicle was pretty good. Sales guys were very nice. Ours was a little new, but he was nice. However it has gone down hill a bit. The vehicle itself has been fine, however the rest has not been. So it took weeks for them to ship my plates back and only overnighted when I contacted them again. 3 weeks of paying insurance on a trade I did not even have. Next. I should have read the paperwork better but they snuck in a monthly payment plan even though we decided on a bi-weekly to help with monthly payments. I will take a little blame, but was going off our discussions the whole time. Though I guess it all went down hill when I turned down there expensive additional coverage. Just dont see how I can buy another vehicle here. Hope this helps others. In the end they got their sale and that was it for them.

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