How much does the 2018 GMC Sierra 3500 HD cost?

The 2018 GMC Sierra 3500 HD has a starting MSRP of $35,900, ranging up to $59,500 for the top trim. Trim pricing includes Base from $35,900; SLE from $40,400; SLT from $48,900; Denali from $56,000.

How much can the 2018 GMC Sierra 3500 HD tow?

The 2018 GMC Sierra 3500 HD has a maximum towing capacity of up to 20,000 pounds, depending on trim and equipment.

How many trims does the 2018 GMC Sierra 3500 HD come in?

The 2018 GMC Sierra 3500 HD is available in 4 trims (44 total configurations) across Truck (Regular Cab) and Truck (Double Cab) and Truck (Crew Cab) body styles with rear wheel drive, four wheel drive.

2018 GMC Sierra 3500 HD

4 trims · 44 configurations · Truck (Regular Cab), Truck (Double Cab), Truck (Crew Cab)

Starting MSRP

$35,900 – $59,500

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Pricing

How much should you pay for the GMC Sierra 3500 HD? Select a trim to update purchase and lease estimates.

MSRP by trim

Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.

Purchase information

Based on Base

Total price (Base MSRP)

$35,900

Typical monthly

$711/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-07-11). Not a credit offer; actual APR varies by lender, credit, and dealer.

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Compare 2018 GMC Sierra 3500 HD trims

Base
14 configurations
MSRP
$35,900 – $44,100
Fuel economy (city/hwy)
—
Horsepower
360 hp
Torque
380 lb-ft
Engine
6L V8 flex-fuel (FFV)
Seating
3
Drivetrain
RWD
Cargo (cu ft)
—
Max towing
14,500 lbs
SLE
14 configurations
MSRP
$40,400 – $50,600
Fuel economy (city/hwy)
—
Horsepower
360 hp
Torque
380 lb-ft
Engine
6L V8 flex-fuel (FFV)
Seating
3
Drivetrain
RWD
Cargo (cu ft)
—
Max towing
14,500 lbs
SLT
10 configurations
MSRP
$48,900 – $54,600
Fuel economy (city/hwy)
—
Horsepower
360 hp
Torque
380 lb-ft
Engine
6L V8 flex-fuel (FFV)
Seating
5
Drivetrain
RWD
Cargo (cu ft)
—
Max towing
14,500 lbs
Denali
6 configurations
MSRP
$56,000 – $59,500
Fuel economy (city/hwy)
—
Horsepower
360 hp
Torque
380 lb-ft
Engine
6L V8 flex-fuel (FFV)
Seating
5
Drivetrain
RWD
Cargo (cu ft)
—
Max towing
20,000 lbs

Compare 2018 GMC Sierra 3500 HD trim specifications
Spec	Base14 configurations	SLE14 configurations	SLT10 configurations	Denali6 configurations
MSRP	$35,900 – $44,100	$40,400 – $50,600	$48,900 – $54,600	$56,000 – $59,500
Fuel economy (city/hwy)	—	—	—	—
Horsepower	360 hp	360 hp	360 hp	360 hp
Torque	380 lb-ft	380 lb-ft	380 lb-ft	380 lb-ft
Engine	6L V8 flex-fuel (FFV)	6L V8 flex-fuel (FFV)	6L V8 flex-fuel (FFV)	6L V8 flex-fuel (FFV)
Seating	3	3	5	5
Drivetrain	RWD	RWD	RWD	RWD
Cargo (cu ft)	—	—	—	—
Max towing	14,500 lbs	14,500 lbs	14,500 lbs	20,000 lbs

Specifications shown for each trim’s base configuration; drivetrain, cab, and box options vary within a trim, and MSRP shows the full range. MSRP excludes destination fees, taxes, and dealer-installed options.

Full specifications

Shown for each trim's base configuration. Drivetrain, cab, and box options within a trim can change dimensions, capacities, and fuel economy.

Engine & drivetrain

Engine type: Baseflex-fuel (FFV)
SLEflex-fuel (FFV)
SLTflex-fuel (FFV)
Denaliflex-fuel (FFV)
Fuel type: Baseflex-fuel (unleaded/E85)
SLEflex-fuel (unleaded/E85)
SLTflex-fuel (unleaded/E85)
Denaliflex-fuel (unleaded/E85)
Cylinders: BaseV8
SLEV8
SLTV8
DenaliV8
Displacement: Base6 L
SLE6 L
SLT6 L
Denali6 L
Horsepower: Base360 hp
SLE360 hp
SLT360 hp
Denali360 hp
Torque: Base380 lb-ft
SLE380 lb-ft
SLT380 lb-ft
Denali380 lb-ft
Transmission: Base6-speed shiftable automatic
SLE6-speed shiftable automatic
SLT6-speed shiftable automatic
Denali6-speed shiftable automatic
Drivetrain: Baserear wheel drive
SLErear wheel drive
SLTrear wheel drive
Denalirear wheel drive

Dimensions

Body type: BaseTruck (Regular Cab)
SLETruck (Regular Cab)
SLTTruck (Double Cab)
DenaliTruck (Crew Cab)
Doors: Base2
SLE2
SLT4
Denali4
Seating: Base3
SLE3
SLT5
Denali5
Length: Base224.4 in
SLE224.4 in
SLT248.9 in
Denali258.4 in
Width: Base80.1 in
SLE80.1 in
SLT80.5 in
Denali96 in
Height: Base77.8 in
SLE77.8 in
SLT78 in
Denali—
Wheelbase: Base133.6 in
SLE133.6 in
SLT158.1 in
Denali167.7 in
Ground clearance: Base8.4 in
SLE8.4 in
SLT8.7 in
Denali8.3 in

Capacity & weight

Max towing: Base14,500 lbs
SLE14,500 lbs
SLT14,500 lbs
Denali20,000 lbs
Max payload: Base4,390 lbs
SLE4,390 lbs
SLT4,246 lbs
Denali6,112 lbs
Curb weight: Base5,985 lbs
SLE5,985 lbs
SLT6,429 lbs
Denali6,888 lbs
Fuel tank: Base36 gal
SLE36 gal
SLT36 gal
Denali36 gal

Full specifications by trim
Spec	Base	SLE	SLT	Denali
Engine & drivetrain
Engine type	flex-fuel (FFV)	flex-fuel (FFV)	flex-fuel (FFV)	flex-fuel (FFV)
Fuel type	flex-fuel (unleaded/E85)	flex-fuel (unleaded/E85)	flex-fuel (unleaded/E85)	flex-fuel (unleaded/E85)
Cylinders	V8	V8	V8	V8
Displacement	6 L	6 L	6 L	6 L
Horsepower	360 hp	360 hp	360 hp	360 hp
Torque	380 lb-ft	380 lb-ft	380 lb-ft	380 lb-ft
Transmission	6-speed shiftable automatic	6-speed shiftable automatic	6-speed shiftable automatic	6-speed shiftable automatic
Drivetrain	rear wheel drive	rear wheel drive	rear wheel drive	rear wheel drive
Dimensions
Body type	Truck (Regular Cab)	Truck (Regular Cab)	Truck (Double Cab)	Truck (Crew Cab)
Doors	2	2	4	4
Seating	3	3	5	5
Length	224.4 in	224.4 in	248.9 in	258.4 in
Width	80.1 in	80.1 in	80.5 in	96 in
Height	77.8 in	77.8 in	78 in	—
Wheelbase	133.6 in	133.6 in	158.1 in	167.7 in
Ground clearance	8.4 in	8.4 in	8.7 in	8.3 in
Capacity & weight
Max towing	14,500 lbs	14,500 lbs	14,500 lbs	20,000 lbs
Max payload	4,390 lbs	4,390 lbs	4,246 lbs	6,112 lbs
Curb weight	5,985 lbs	5,985 lbs	6,429 lbs	6,888 lbs
Fuel tank	36 gal	36 gal	36 gal	36 gal