Close STOCKUSP0109
VIN1GT49WEY9MF176539
Used 2021 GMC Sierra 3500HD Denali in Frankfort, KY
- Retail Price
- $55,412
-
SavingsSavings available to everybody.
- - $3,913
- Huffman Value Price*
- $51,499
Popular Features
Details
Vehicle Description
Fog Lights
Towing
Cruise Control
Heated Seat
Heated Steering Wheel
Premium Sound
Android Auto
Apple CarPlay
Bluetooth
Navigation
Sunroof/Moonroof
Keyless Start
Sat Radio
Lane Departure
Keyless Entry
Parking Assist
Reverse Camera
Mileage
78,919
Trim
Denali
Stock #
USP0109
VIN
1GT49WEY9MF176539
Exterior Color
Summit White
Interior Color
Jet Black
Doors
4
Passengers
5
Engine
Duramax 6.6L V8 Turbodiesel
Transmission
10-Speed Automatic
Drivetrain
4WD
Recent Arrival! 2021 GMC Sierra 3500HD Denali 4D Crew Cab Summit White 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic *LOW MILES*, *PREVIOUS OWNER HIGHLY RECOMMENED*, *4 WHEEL DRIVE / 4X4*, *POWER MOONROOF*, *NAVIGATION*, *APPLE CARPLAY/ANDROID AUTOPLAY*, *BLUETOOTH*, *REAR BACK UP CAMERA*,…Recent Arrival! 2021 GMC Sierra 3500HD Denali 4D Crew Cab Summit White 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic *LOW MILES*, *PREVIOUS OWNER HIGHLY RECOMMENED*, *4 WHEEL DRIVE / 4X4*, *POWER MOONROOF*, *NAVIGATION*, *APPLE CARPLAY/ANDROID AUTOPLAY*, *BLUETOOTH*, *REAR BACK UP CAMERA*, *REMOTE START*, *PUSH BUTTON START*, *LEATHER SEATING*, *HEATED/COOLED FR SEATS*, *CREW CAB*, *DIESEL / TURBO DIESEL ENG*, *3 YEARS COMPLIMENTARY MAINTENANCE INCLUDED*, *ASK ABOUT OUR LOW FINANCING OPTIONS*, *ASK ABOUT OUR EXTENDED WARRANTY OPTIONS*, *HUFFMAN PLATINUM PLAN WARRANTY INCUDED*, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports (First Row), 2 USB Ports Inside Console, 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 2nd Row Heated Outboard Seats, 4G LTE Wi-Fi Hotspot Capable, 6" Rectangular Chromed Tubular Assist Steps, Auto-Dimming Inside Rearview Mirror w/Camera, Automatic Emergency Braking, Bed View Camera w/2 Trailer Camera Provisions, Chrome Recovery Hooks, Compass Located In Instrument Cluster, Deep-Tinted Glass, Denali Ultimate Package, Driver Alert Package I, Driver Alert Package II, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, Following Distance Indicator, Forward Collision Alert, GMC Connected Access Capable, Gooseneck/5th Wheel Prep Package, HD Rear Vision Camera, HD Surround Vision w/2 Trailer View Camera Provisions, Heated Driver & Front Outboard Passenger Seats, Hill Descent Control, Hitch Guidance w/Hitch View, In-Vehicle Trailering System App, Integrated Trailer Brake Controller, IntelliBeam Automatic High Beam On/Off, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, Lane Departure Warning System, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, Multicolor 15" Diagonal Head-Up Display, OnStar & GMC Connected Services Capable, Polished Exhaust Tip, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Defogger, Power Sunroof, Preferred Equipment Group 5SA, ProGrade Trailering System, Rear Cross Traffic Alert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, Signature Denali Grille w/High Gloss Black Mesh, Spray-On Pickup Bed Liner w/Denali Logo, Steering Wheel Audio Controls, Technology Package, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver & Front Passenger Seats, Wireless Charging, Wireless Phone Projection, X31 Off-Road Package.
NOT LOCAL? LET US SEND YOU A CUSTOM VIDEO PRESENTATION OF THIS VEHICLE! Please call us or visit our website. Must finance with Nissan/GM Financial if applicable.
Why Buy from Neil Huffman Auto Group? Our exclusive HUFFMAN VALUE PRICING gives you a real-time, market-based price- we don’t believe in artificially inflating prices just to play a negotiating game. Just honest pricing from the start with no haggling. Every qualifying vehicle comes with the HUFFMAN PLATINUM PLAN WARRANTY covering you for the first 90 days or 3000 miles of ownership. 3 YEARS OF COMPLIMENTARY MAINTENANCE with every purchase! NOT 100% SATISFIED? Our HUFFMAN 7-DAY LIKE-IT or EXCHANGE-IT PROMISE allows you to return every qualifying vehicle within 7 days or 150 miles (whichever comes first) and exchange it for another of equal or greater value. NO PRESSURE, NO HASSLE! We’ll buy YOUR car even if you don’t buy ours! Huffman Has It!(more)
NOT LOCAL? LET US SEND YOU A CUSTOM VIDEO PRESENTATION OF THIS VEHICLE! Please call us or visit our website. Must finance with Nissan/GM Financial if applicable.
Why Buy from Neil Huffman Auto Group? Our exclusive HUFFMAN VALUE PRICING gives you a real-time, market-based price- we don’t believe in artificially inflating prices just to play a negotiating game. Just honest pricing from the start with no haggling. Every qualifying vehicle comes with the HUFFMAN PLATINUM PLAN WARRANTY covering you for the first 90 days or 3000 miles of ownership. 3 YEARS OF COMPLIMENTARY MAINTENANCE with every purchase! NOT 100% SATISFIED? Our HUFFMAN 7-DAY LIKE-IT or EXCHANGE-IT PROMISE allows you to return every qualifying vehicle within 7 days or 150 miles (whichever comes first) and exchange it for another of equal or greater value. NO PRESSURE, NO HASSLE! We’ll buy YOUR car even if you don’t buy ours! Huffman Has It!(more)
Vehicle Details
Features
Safety
Safety
Rearview monitor
in dash
Cross traffic alert
rear
Pre-collision warning system
vibrating driver seat, audible warning, visual warning
Camera system
surround view, cargo area
Check rear seat reminder
Automatic emergency braking
front
Child safety door locks
Child seat anchors
LATCH system
Parking sensors
rear, front
Blind spot safety
sensor/alert
Lane deviation sensors
Programmable safety key
Airbags
Airbag deactivation
occupant sensing passenger
Side airbags
front
Front airbags
dual
Side curtain airbags
front, rear
Security
Anti-theft system
alarm, vehicle immobilizer
Power door locks
anti-lockout, auto-locking
Mirrors
Side mirrors
integrated turn signals, heated, auto-dimming
Side mirror adjustments
power, reverse gear tilt, power folding, power telescoping
Towing mirrors
Technology
Instrumentation
Warnings and reminders
low battery, lamp failure, low oil pressure, coolant temperature warning, low fuel level, maintenance due
Customizable instrument cluster
Instrument cluster screen size
8 in.
Clock
Powertrain hour meter
Gauge
tachometer, oil pressure
Compass
Digital odometer
External temperature display
Multi-function display
Fuel economy display
MPG, range
Trip odometer
Audio System
Radio
voice operated, touch screen display, AM/FM, HD radio
Auxiliary audio input
Bluetooth, jack, USB, memory card slot, iPod/iPhone
Premium brand
Bose
Antenna type
diversity, mast
Subwoofer
1
Total speakers
6
Radio data system
Speed sensitive volume control
Satellite radio
SiriusXM
Telematics
Navigation system
memory card, touch screen display, voice operated
Electronic messaging assistance
with read function, voice operated
Satellite communications
voice guided directions, OnStar
Wi-Fi
hotspot
Driver assistance app
roadside assistance
Smart device app function
maintenance status
Smart device app compatibility
myGMC with Connected Access
Wireless data link
Bluetooth
Hands-free phone call integration
voice operated
In Car Entertainment
Connected in-car apps
app marketplace integration
Infotainment
GMC Infotainment System
Infotainment screen size
8 in.
Smartphone integration
wireless Apple CarPlay, wireless Android Auto
Exterior
Lights
Daytime running lights
LED
Front fog lights
LED
Taillights
LED
Headlights
auto high beam dimmer, LED, wiper activated, auto delay off, auto on/off
Exterior entry lights
puddle lamps, approach lamps
Roof-mounted lights
Exterior Features
Pickup bed light
LED
Tailgate
power locking, power open, multi-function split-folding, removable, lift assist, step
Bumper detail
rear integrated corner step
Front bumper color
body-color
Door handle color
chrome
Mirror color
chrome
Pickup bed liner
spray-on
Running boards
Grille color
chrome, chrome surround
Skid plate(s)
front, rear
Exhaust tip color
stainless steel
Rear bumper color
body-color
Fender lip moldings
black
Running board color
chrome
Hood scoop
Window trim
stainless steel
Tires and Rims
Tire type
all terrain
Spare tire mount location
underbody
Spare wheel type
steel
Tire Pressure Monitoring System
Spare tire size
full-size
Wheels
polished aluminum alloy
Windows
Pickup sliding rear window
power horizontal
Window defogger
rear
Front wipers
variable intermittent
Tinted glass
Power windows
safety reverse
Interior
Seats
Driver seat power adjustments
height, 10, lumbar, reclining
Passenger seat power adjustments
height, 10, lumbar, reclining
Driver seat
ventilated, heated
Passenger seat
heated, ventilated
Rear headrests
3, adjustable
Front headrests
2, adjustable
Front seat type
bucket
Rear seat type
60-40 split bench
Upholstery
leather-trimmed
Rear seat folding
folds up
Rear seat
heated
Upholstery accents
perforated
Seatbelts
Seatbelt pretensioners
front
Seatbelt warning sensor
front
Rear seatbelts
3-point
Front seatbelts
3-point
Emergency locking retractors
front
Mechanical
Stability and Traction
Off-road driving assist
hill descent
Stability control
Traction control
Hill holder control
Roll stability control
Trailer stability control
Brakes
Rear brake width
1.34
Front brake width
1.57
Rear brake type
ventilated disc
Rear brake diameter
14.2
Front brake diameter
14.0
Front brake type
ventilated disc
Braking assist
Electronic brakeforce distribution
ABS
4-wheel
Power brakes
Electronic parking brake
auto off
Drivetrain
4WD type
part time w/ on demand setting
4WD selector
electronic hi-lo
Axle ratio
3.73
Locking differential
rear
Suspension
Front suspension classification
independent
Rear suspension classification
solid live axle
Rear spring type
leaf
Front spring type
torsion bars
Tuned suspension
off-road
Rear suspension type
multi-leaf
Rear shock type
twin-tube gas
Front stabilizer bar
diameter 35 mm
Front suspension type
upper and lower control arms
Front shock type
twin-tube gas
Towing and Hauling
Tow hooks
front
Tow/Haul mode
Pickup bed cargo management
tie-down anchors
Trailer hitch
Auxiliary transmission fluid cooler
Trailer wiring
4-pin, 7-pin
Trailer brake controller
Engine
Battery saver
Battery
heavy duty, maintenance-free
Auxiliary oil cooler
Alternator
170 amps
Battery rating
720 CCA
Comfort
Convenience Features
Wireless charging station
front
Power outlet(s)
USB front, USB rear, 115V cargo area, 12V rear, 12V front, 115V front
Cupholders
front, rear
Memorized settings
2 driver, driver seat, side mirrors
Steering wheel
tilt and telescopic
One-touch windows
4
Reading lights
front, rear
Power steering
variable/speed-proportional
Cruise control
Multi-function remote
panic alarm, proximity entry system
Power windows
lockout button
Overhead console
front
Steering wheel mounted controls
audio, cruise control, phone, multi-function, voice control
Push-button start
Vanity mirrors
dual illuminating
Assist handle
rear, front
Remote engine start
Center console
front console with armrest and storage
Rearview mirror
auto-dimming
Easy entry
power driver seat
Universal remote transmitter
Homelink - garage door opener
Storage
front seatback, under rear seats, door pockets
Capless fuel filler system
Comfort Features
Floor mat material
carpet
Heated steering wheel
Center console trim
simulated wood
Steering wheel trim
leather
Door trim
simulated wood, leather
Armrests
rear folding, rear center with cupholders
Floor mats
rear, front
Floor material
carpet
Air Conditioning
Front air conditioning
automatic climate control
Front air conditioning zones
dual
Rear vents
second row
Air filtration
Specifications
Drive Type
Drive Type
4X4
4WD Hub Type
Pushbutton Hubs
Seating
Standard Seating
5
Max Seating
5
Head Room (front)
43 in
Head Room (rear)
40.1 in
Hip Room (front)
61.2 in
Hip Room (rear)
60.2 in
Shoulder Room (front)
66 in
Shoulder Room (rear)
65.3 in
Leg Room (front)
44.5 in
Leg Room (rear)
43.4 in
Seating Rows
2
Truck Specifications
Bed Length
82.2 in
Max Payload
4365 lbs
Measurements of Size & Shape
Length
250.1 in
Width
81.9 in
Width (without mirrors)
81.9 in
Height
80.9 in
Wheelbase
158.9 in
Ground Clearance
11.2 in
Track Width (front)
68.1 in
Track Width (rear)
68.3 in
Measurements of Weight
Gross Vehicle Weight Rating
11350 lbs
Gross Vehicle Weight Range
10001-14000 lbs
Curb Weight
6947 lbs
Gross Combined Weight Rating
24000 lbs
Base Towing Capacity
14500 lbs
Max Towing Capacity
21300 lbs
Performance Specifications
Turning Circle
52.7 ft
Fuel Tanks
Fuel Capacity
36.0 Gallons
Wheels and Tires
Front Tire Type
LT275/65R20
Front Wheel Diameter
20.0 x 8.5 in
Rear Tire Type
LT275/65R20
Rear Wheel Diameter
20.0 x 8.5 in
Testimonials
Rashawn was amazing! Very professional, accommodating and has a great personality. I highly recommend going to see him. Mr. Easterling was also great as well. If you want a hassle free, yet very helpful and knowledgeable car buying experience, go see...
K
Kristyle L.
My service was quick and easy. William was courteous and helpful explaining the services that were performed.
S
Susan W.
My husband and I had a great experience with Austin and Sam! Super friendly, helpful and they both worked extra hard to see that we went home in our new truck! Will definitely be back for vehicles in the future for our children.
S
Samantha V.
Similar Vehicle Match
| Stock # | PDL0104A |
- Retail Price
- $74,995
-
SavingsSavings available to everybody.
- - $5,420
- Huffman Value Price*
- $69,575
Sign Up For Price Drop AlertsDescription
CARFAX One-Owner. 2026 GMC Sierra 3500HD SLE 4D Crew Cab Titanium Rush Metallic 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic *LOCAL TRADE IN*, *NO ACCIDENTS ON CARFAX*, *LOW…CARFAX One-Owner. 2026 GMC Sierra 3500HD SLE 4D Crew Cab Titanium Rush Metallic 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic *LOCAL TRADE IN*, *NO ACCIDENTS ON CARFAX*, *LOW MILES*, *PURCHASED NEW FROM THIS DEALERSHIP ORIGINALLY*, *NON-SMOKER CAR*, *IMPECCABLE CONDITION*, *METICULOUSLY MAINTAINED*, *4 WHEEL DRIVE / 4X4*, *APPLE CARPLAY/ANDROID AUTOPLAY*, *BLUETOOTH*, *REAR BACK UP CAMERA*, *PUSH BUTTON START*, *DUAL-ZONE AUTO TEMP CNTRL*, *AUTO TRANS*, *CREW CAB*, *DIESEL / TURBO DIESEL ENG*, *SAVE $$THOUSANDS$$ OFF ORIGINAL MSRP*, *3 YEARS COMPLIMENTARY MAINTENANCE INCLUDED*, *ASK ABOUT OUR LOW FINANCING OPTIONS*, *ASK ABOUT OUR EXTENDED WARRANTY OPTIONS*, *REMAINDER OF FACTORY WARRANTY STILL APPLIES*, *HUFFMAN PLATINUM PLAN WARRANTY INCUDED*.NOT LOCAL? LET US SEND YOU A CUSTOM VIDEO PRESENTATION OF THIS VEHICLE! Please call us or visit our website. Must finance with Nissan/GM Financial if applicable.Why Buy from Neil Huffman Auto Group? Our exclusive HUFFMAN VALUE PRICING gives you a real-time, market-based price- we don’t believe in artificially inflating prices just to play a negotiating game. Just honest pricing from the start with no haggling. Every qualifying vehicle comes with the HUFFMAN PLATINUM PLAN WARRANTY covering you for the first 90 days or 3000 miles of ownership. 3 YEARS OF COMPLIMENTARY MAINTENANCE with every purchase! NOT 100% SATISFIED? Our HUFFMAN 7-DAY LIKE-IT or EXCHANGE-IT PROMISE allows you to return every qualifying vehicle within 7 days or 150 miles (whichever comes first) and exchange it for another of equal or greater value. NO PRESSURE, NO HASSLE! We’ll buy YOUR car even if you don’t buy ours! Huffman Has It!(more)
Huffman Value Price*
$69,575
| Mileage | 300 |
| Trim | SLE |
| Stock # | PDL0104A |
| VIN | 1GT4UTEY6TF167695 |
| Exterior Color | Titanium Rush Metallic |
| Interior Color | Black |
| Drivetrain | 4WD |
| Stock # | G8708A |
- Retail Price
- $46,200
-
SavingsSavings available to everybody.
- - $3,822
- Huffman Value Price*
- $42,378
Sign Up For Price Drop AlertsDescription
CARFAX One-Owner. 2024 GMC Sierra 3500HD Pro 2D Standard Cab Sterling Metallic 4WD 6.6L V8 10-Speed AutomaticNOT LOCAL? LET US SEND YOU A CUSTOM VIDEO PRESENTATION OF THIS…CARFAX One-Owner. 2024 GMC Sierra 3500HD Pro 2D Standard Cab Sterling Metallic 4WD 6.6L V8 10-Speed AutomaticNOT LOCAL? LET US SEND YOU A CUSTOM VIDEO PRESENTATION OF THIS VEHICLE! Please call us or visit our website. Must finance with Nissan/GM Financial if applicable.Why Buy from Neil Huffman Auto Group? Our exclusive HUFFMAN VALUE PRICING gives you a real-time, market-based price- we don’t believe in artificially inflating prices just to play a negotiating game. Just honest pricing from the start with no haggling. Every qualifying vehicle comes with the HUFFMAN PLATINUM PLAN WARRANTY covering you for the first 90 days or 3000 miles of ownership. 3 YEARS OF COMPLIMENTARY MAINTENANCE with every purchase! NOT 100% SATISFIED? Our HUFFMAN 7-DAY LIKE-IT or EXCHANGE-IT PROMISE allows you to return every qualifying vehicle within 7 days or 150 miles (whichever comes first) and exchange it for another of equal or greater value. NO PRESSURE, NO HASSLE! We’ll buy YOUR car even if you don’t buy ours! Huffman Has It!(more)
Huffman Value Price*
$42,378
| Mileage | 45,912 |
| Trim | Pro |
| Stock # | G8708A |
| VIN | 1GT39SE70RF285488 |
| Exterior Color | Sterling Metallic |
| Interior Color | Jet Black |
| Drivetrain | 4WD |
| Stock # | PDL0182 |
- Retail Price
- $82,720
-
SavingsSavings available to everybody.
- - $6,821
- Huffman Value Price*
- $75,899
Sign Up For Price Drop AlertsDescription
Recent Arrival! CARFAX One-Owner. 2025 GMC Sierra 3500HD Denali 4D Crew Cab Sterling Metallic 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic *LOCAL TRADE IN*, *NO ACCIDENTS ON…Recent Arrival! CARFAX One-Owner. 2025 GMC Sierra 3500HD Denali 4D Crew Cab Sterling Metallic 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic *LOCAL TRADE IN*, *NO ACCIDENTS ON CARFAX*, *LOW MILES*, *4 WHEEL DRIVE / 4X4*, *POWER MOONROOF*, *NAVIGATION*, *APPLE CARPLAY/ANDROID AUTOPLAY*, *BLUETOOTH*, *REAR BACK UP CAMERA*, *REMOTE START*, *PUSH BUTTON START*, *HEAD-UP DISPLAY*, *DUAL-ZONE AUTO TEMP CNTRL*, *LEATHER SEATING*, *HEATED FRONT SEATS*, *COOLED/VENT FRONT SEATS*, *REAR HEATED SEATS*, *LANE DEPARTURE / KEEPING WARNING SYS*, *BLIND SPOT ASSIST*, *ADAPTIVE CRUISE CNTRL*, *FWD COLLISION WARNING SYS*, *REAR PARKING SENSORS*, *AUTO TRANS*, *CREW CAB*, *DIESEL / TURBO DIESEL ENG*, *SAVE $$THOUSANDS$$ OFF ORIGINAL MSRP*, *3 YEARS COMPLIMENTARY MAINTENANCE INCLUDED*, *ASK ABOUT OUR LOW FINANCING OPTIONS*, *ASK ABOUT OUR EXTENDED WARRANTY OPTIONS*, *REMAINDER OF FACTORY WARRANTY STILL APPLIES*, *HUFFMAN PLATINUM PLAN WARRANTY INCUDED*.NOT LOCAL? LET US SEND YOU A CUSTOM VIDEO PRESENTATION OF THIS VEHICLE! Please call us or visit our website. Must finance with Nissan/GM Financial if applicable.Why Buy from Neil Huffman Auto Group? Our exclusive HUFFMAN VALUE PRICING gives you a real-time, market-based price- we don’t believe in artificially inflating prices just to play a negotiating game. Just honest pricing from the start with no haggling. Every qualifying vehicle comes with the HUFFMAN PLATINUM PLAN WARRANTY covering you for the first 90 days or 3000 miles of ownership. 3 YEARS OF COMPLIMENTARY MAINTENANCE with every purchase! NOT 100% SATISFIED? Our HUFFMAN 7-DAY LIKE-IT or EXCHANGE-IT PROMISE allows you to return every qualifying vehicle within 7 days or 150 miles (whichever comes first) and exchange it for another of equal or greater value. NO PRESSURE, NO HASSLE! We’ll buy YOUR car even if you don’t buy ours! Huffman Has It!(more)
Huffman Value Price*
$75,899
| Mileage | 12,538 |
| Trim | Denali |
| Stock # | PDL0182 |
| VIN | 1GT4UWEYXSF224934 |
| Exterior Color | Sterling Metallic |
| Interior Color | Jet Black |
| Drivetrain | 4WD |
Dealership Information
Sales
Monday9:00am - 8:00pm
Tuesday9:00am - 8:00pm
Wednesday9:00am - 8:00pm
Thursday9:00am - 8:00pm
Friday9:00am - 8:00pm
Saturday9:00am - 6:00pm
SundayClosed
Service
Monday8:00am - 5:00pm
Tuesday8:00am - 5:00pm
Wednesday8:00am - 5:00pm
Thursday8:00am - 5:00pm
Friday8:00am - 5:00pm
SaturdayClosed
SundayClosed
Parts
Monday8:00am - 5:00pm
Tuesday8:00am - 5:00pm
Wednesday8:00am - 5:00pm
Thursday8:00am - 5:00pm
Friday8:00am - 5:00pm
SaturdayClosed
SundayClosed
Disclaimer
While every reasonable effort is made to ensure the accuracy of this information, we are not responsible for any errors or omissions contained on these pages. Please verify any information in question with the dealer. Prices do not include tax, title, license and dealer processing fee. All vehicles are subject to prior sale. Not responsible for typographical errors.