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*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
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New and used
2026 GMC Sierra 1500 SLT trucks
for sale
near
New Berlin, WI
- Down Payment
- $0
- Net trade-in value
- $0
- Months
- 72
- APR
- 7.0%
- Sales tax
- 0.0%
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.












New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Excellent customer service and great to work with!
Excellent customer service and great to work with! They even delivered my vehicle to me. Nick in sales is the best from start to finish!






Vehicle information
Features
Reviews
Trade in value was more than was first anticipated.
Trade in value was more than was first anticipated. Sales person and finance individual was extremely professional. Wouldn’t hesitate dealing with them again. Thank you guys. You did perfect.
Vehicle information
Features
Reviews
I will return.
I will return. Best service department in Waukesha. And I have been to several of them.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Tanner and Mark at Boucher Buick GMC of Waukesha we’re
Tanner and Mark at Boucher Buick GMC of Waukesha we’re excellent to work with. Appreciated the knowledge of their products without them pushing anything on us.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Had the pleasure of having Nick Majeske provide us with
Had the pleasure of having Nick Majeske provide us with an unbelievable experience of buying a new car. From start to finish and even after we purchased our car, his support and genuine desire to make sure we were satisfied did not go unnoticed. What really stood out to us was throughout the process, Nick was transparent and honest, which I greatly appreciated. He kept us informed every step of the way, and there were no surprises or hidden fees. His professionalism and integrity are truly commendable. We could not be happier with our purchase and overall experience throughout it all, and we would like to think this was in all thanks to Nick.






Vehicle information
Features
Reviews
Everyone was very polite and friendly Tim was very
Everyone was very polite and friendly Tim was very helpful and and courteous he went above and beyond to get my car repaired and can?t wait to come back in for normal service






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great experience from beginning to end!
Great experience from beginning to end!! Extremely knowledgeable great customer service actually the best customer service I've ever experienced would definitely buy another car from them and recommend them to friends and family.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Overall pleasant experience.
Overall pleasant experience. I had some issues arise in the purchasing process, but they were all addressed timely and satisfactorily. Nice people to deal with.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Kunes Buick GMC
Found and fixed my oil leak and got me on my way in about an hour! Fair price and a great service advisor who walked me through everything before starting the work! Thank You Steve Buczak! Thank you also for the free car wash!






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Thanks for your help!
Thanks for your help! This dealership offered a great deal that I couldn't pass up on. Glad to have worked with them to make this happen. I am particularly appreciative of the no-hassle and no-pressure environment that the salesperson, Cody, did a great job fostering. Looking forward to working with them in the future!






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I went in for an oil change and came out with a new
I went in for an oil change and came out with a new vehicle. The sales staff are amazing. Friendly, accomodating and efficient. The manager in the service department pays attention to the details. He has been very friendly and accomidating.






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Reviews
They gave me some cookies and were very nice.
They gave me some cookies and were very nice. And the car was super cool.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Positive experience
No pressure car buying experience with Chad Braeger. He answered all our questions that we had. When I went back a week later to pick up the vehicle from having accessories installed, Chad met me at the door and answered any follow up questions I had with the vehicle.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
We purchased a used car from Robert and he was extremely
We purchased a used car from Robert and he was extremely respectful and went out of his way to be helpful. We needed to get a car trailer to get the car back to Louisville Kentucky. He was able to find one and reserve it for us. Everyone at the dealership was very nice and helpful. We enjoyed dealing with everyone. We will always remember the great service and friendly staff. We will remember them if we make any future car purchases.






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Chad & Patti
Chad Breager & Patti Galligan went above and beyond my expectations! 2 of the most helpful people I have ever met ! I definitely will be back ! Eddie






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great!
Great!! Did everything they could to make it a pleasurable car buying experience! Great job to the team at Boucher BGMC






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Features






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
My Jeep Wrangler
Had a awesome experience with Chad Braeger when purchasing my Jeep Wrangler. Everyone was helpful and willing to answer any questions or concerns I had. Thank u, for making me feel comfortable thru out my buying experience. Lisa






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Mr Biddle is pleased with the work and professional
Mr Biddle is pleased with the work and professional service Solomon has demonstrated in fixing my Yukon and he helped in getting all parties involved. Thank you Solomon and crew !!!






New
2026 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
BEST SERVICE
They picked up my car from home and had it back to me so quickly!!!
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About the 2026 GMC Sierra 1500 SLT
SLT shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Rear Wheel Drive
- Combined MPG
- 17
- Transmission
- 10-Speed A/T
- Engine
- 305.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Diesel Fuel)
How much does the 2026 GMC Sierra 1500 SLT cost?
The 2026 GMC Sierra 1500 SLT price depends on optional features. Prices typically start at $54,900.
What is the MPG of the 2026 GMC Sierra 1500 SLT?
The 2026 GMC Sierra 1500 SLT offers up to 16 MPG in city driving and 20 MPG on the highway for a combined rating of 17 MPG.
These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2026 GMC Sierra 1500 SLT?
The 2026 GMC Sierra 1500 SLT compares to and/or competes against the following vehicles:
SLT (3 styles)
Style | ||
---|---|---|
2WD Crew Cab 147" SLT | 4WD Crew Cab 147" SLT | 4WD Crew Cab 157" SLT |
Inventory price | ||
Starting at $54,900 | Starting at $58,000 | Starting at $58,700 |
Combined MPG | ||
17 | 16 | 16 |
Engine | ||
305.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Diesel Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
GMC Sierra 1500 trims
-
GMC Sierra 1500 2026 Elevation
34 listings starting at $50,990
-
GMC Sierra 1500 2026 Denali
24 listings starting at $69,810
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