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GMC Sierra 2500 Performance Package

We have 53 Items In-stock. Select a year to continue.
$134.96 List Price $179.95 Save $44.99 Availability: In Stock
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JET PERFORMANCE PRODUCTS - POWER SHIFT PERFORMANCE MODULE

JET Performance Products’ Power Shift module lets the driver select from four different settings, from basic around-town driving to an advanced race-oriented setting at the push of a button and is great for people who like a very responsive, firmer than stock shift. JET offers chips, modules and programmers that streamline horsepower and torque throughout a vehicle’s entire power band, not just when being utilized in full-throttle driving conditions like many tuning products on the market today.

  • For electronic shift transmissions
  • Modifies transmission pressure to allow stock to super firm shifting
  • Offers 4 shift levels: Stock, Stage 1, Stage 2 or Stage 3
  • Quickly and easily connects to transmission’s wiring harness
  • Can be used with JET Powr-Servo kit for even more firm shifting
  • Push-button mode

See product for application details.

 

 

  • SKU#: J2070702
  • Brand: Jet Performance
  • Fit Note: transmissionmfrcode : 4L80-E, transmissionmfrcode: 4L80-E
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 2-year Jet Performance limited warranty
 
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
$299.00 List Price $373.75 Save $74.75 Availability: In Stock
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EDGE PRODUCTS – INSIGHT CS PERFORMANCE MONITORS

Edge’s Insight CS performance monitor gives enthusiasts a closer look at what their engine is doing when and why, offering sophisticated functionality for today’s complex onboard computer technology in a modern, compact multi-gauge display. Edge was one of the first companies to specialize in performance electronics in the diesel truck space, and now leads the industry not only in diesel truck tuning, but gas-powered vehicles as well.

  • Control aftermarket accessories and tools via the monitor once linked
  • Includes pitch & roll and G-force gauges
  • Displays engine parameter IDs including MPH/RPM/EGT and vehicle SAE data
  • High-rez 2.4” one-touch color screen
  • Can read and clear diagnostic trouble codes (DTCs)
  • Works with Edge and aftermarket programmers and/or tuners
  • View output in either numeric or analog gauge style
  • Works with all OBD2-enabled, 1996 and newer vehicles
  • Simple suction cup mount (also works with Edge monitor dash pod)
  • Updates via internet
  • SKU#: E4483730
  • Brand: Edge Products
  • Quantity Sold: Sold Individually
  • Anticipated Ship Out Time: 1-2 Business Days
  • Cooling Fan Temperature Adjustability: No
  • Rev Limiter Adjustability: No
  • Shift Firmness Adjustability: No
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | All Engines | WT
  • 2002-2004 | All Engines | Base
(see more)
$499.80 List Price $589.76 Save $89.96 Availability: In Stock
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BULLY DOG – TRIPLE DOG GT GAUGE TUNERS FOR GAS APPLICATIONS

How can you know that your vehicle is performing as well as it possibly can? Simply connect a Bully Dog Triple Dog GT Gauge Tuner for Gas Applications to increase both fuel efficiency and performance. The Bully Dog Triple Dog GT Gauge Tuner for Gas Applications has software applications for the widest range of cars, trucks and SUVs of any electronic diagnosis and tuning system available anywhere. Bully Dog was founded over 15 years ago in the U.S. as a pioneering manufacturer of cold air intake systems and electronic tuning and diagnosis systems, offering dyno-tested products that increase torque, horsepower and performance.

  • Comes with HDMI, Power Wire and Mini USB Cables
  • Installs in minutes without any special tools
  • If needed, there is a simple procedure to return to stock condition
  • Includes windshield mount
  • Erases troublesome check engine lights
  • LCD screen is 2.4 inches in size
  • Monitors turbo boost pressure on vehicles with turbo engines
  • Monitors temperatures including oil, transmission, coolant, intake and exhaust gas temps
  • Safely increase fuel efficiency, torque and horsepower
  • Two types of data displays, graph and analog
  • Great for drag strip use, measures 0-100 KPH time and ¼ mile speed and time
  • Check your speedometer for accuracy
  • Software updates are free
  • Compatible software applications for a wide selection of vehicles
  • Perfect for tow vehicles, monitors vehicle condition and vehicle performance when towing
  • Space saving compact design
  • Diagnoses vehicle issues

NOTE: California residents must order model number 40410. Model 40415 is not legal for use and sale in California.

  • SKU#: B1540410
  • Brand: Bully Dog
  • Fit Note: Speed Limit; Tire; DTC~ Up To +23.3 hp/49 lbs.-ft. Torque
  • Cooling Fan Temperature Adjustability: No - Jeep applications Only
  • Rev Limiter Adjustability: No - Nissan applications only
  • Shift Firmness Adjustability: Yes
  • Shift Point Adjustability: Yes - except Nissan
  • Speedometer Calibration Tire Size: Yes
(see more)
Fits the following GMC Sierra 2500 Years:
  • 1999-2004 | All Engines | All Submodels
Rating: (see review/s)

"Some of the features worked others didnt. Rev limiter didnt change in my car after multiple attempts and resets. Monitoring and diagnostics are handy. Definitely brought a little extra power" posted by: trev35 on November 18, 2012

"It was a nice addition to the truck easy to use and at a fair price. I would recommend it to any one no problems" posted by: Sparks3489 on February 13, 2012 view all 4 reviews

$389.00 List Price $459.02 Save $70.02 Availability: In Stock
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DIABLOSPORT – INTUNE PROGRAMMERS

Loaded with the most widely used performance and fuel economy tunes, the inTune programmer from DiabloSport replaces the Predator series with a fresh new touch-screen interface, over a gig of memory and easy to use drag-and-drop technology making it one of the fastest and most powerful programmers available. DiabloSport, dedicated to automotive technology, specializes in delivering enthusiasts with power and performance on the fly with award-winning programmers and tuners.

  • Pre-loaded tunes for fuel economy, performance and specialty tunes available for sensor upgrades, pulley upgrade tunes for superchargers and cold-air kits
  • Custom tunes for idle, spark adjust, speed/rev limiters, tire size, gears, shift points and more
  • Record up to 30 minutes of data from 8 parameters at once
  • High rez color touch screen
  • Features 1 GB of memory and dual processors
  • Internet updateable via USB cable (included) on Mac or PC
  • Drag-and-drop technology makes file transfers and updates quick and easy
  • Reads/clears DTCs (diagnostic trouble codes)
  • 5V input for external sensor
  • Works on 1998/OBD-II and newer performance-oriented vehicles
  • Engineered and manufactured in America
  • Smaller than a cell phone
  • SKU#: DBSI1000
  • Brand: Diablo Sport
  • Fit Note: HP Increase +15 hp, Torque Increase +20 ft/lb, Idle RPM Adjustable, Intenet Updateable, Fully Adjustable Tuning Parameters, HP Increase +30 hp, Torque Increase +30 ft/lb, Fully Adjustable Tuning Parameters
  • Cooling Fan Temperature Adjustability: Yes
  • Rev Limiter Adjustability: Yes
  • Shift Firmness Adjustability: Yes
  • Shift Point Adjustability: Yes
  • Speedometer Calibration Tire Size: Yes
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | All Engines | WT
  • 2002-2004 | All Engines | Base
(see more)
$319.33 List Price $376.81 Save $57.48 Availability: In Stock
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PERFORMANCE RADIATOR, ALUMINUM CORE/PLASTIC TANK, 1-ROW, NEW -- 34 x 17.31 x 0.94 in. core size, 1.31 in. inlet size, 1.56 in. outlet size, 9.8 mm tube pitch; With 7-plate 11.5 in. transmission oil cooler and 6-plate 11.5 in. engine oil cooler; A high quality, OE replacement radiator; With 3-year Performance Radiator limited warranty
  • SKU#: PFR2632
  • Brand: Performance Radiator
  • Product Fit: Direct Fit
  • Recommended Use: OE Replacement
  • Tank Material: Plastic
  • Anticipated Ship Out Time: Same day - 1 business day
  • Automatic Transmission Cooler: Yes
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
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$4,251.08 List Price $5,016.27 Save $765.19 Availability: In Stock Core Deposit: $2,625.00
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GM – REMANUFACTURED REPLACEMENT ENGINE LONG BLOCKS

GM’s remanufactured replacement long blocks offer an affordable way to get that daily driver or track vehicle up and running again, with the engine block, crankshaft, cylinder head, cam, valve train oil pan and valve covers included. GM is a global leader in automotive performance and design, manufacturing the nation’s finest vehicles and components while keeping sustainability top-of-mind.

  • Refurbished/rebuilt by the OEM
  • Cylinder head, engine block, valve train, crankshaft, oil pan, valve covers and camshaft included
  • Direct fit by make, model and year
  • Made for custom vehicles, daily drivers and everything in-between
  • SKU#: GMP19301553
  • Brand: GM Performance
  • Displacement/C.I.: 365
  • Warranty: 2-year or 50000-mile GM Performance Limited Warranty
 
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
$198.10 List Price $233.76 Save $35.66 Availability: In Stock
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POWERSTOP – Z23 EVOLUTION SPORT PERFORMANCE 1-CLICK BRAKE KITS

Replacing or upgrading your brakes is an investment, so choose the Z23 Evolution Sport Performance 1-Click brake kit by PowerStop and enjoy 20 percent more stopping power, a lot less dust and noise – and they'll last longer too. PowerStop Extreme Performance Brake Systems, a team with over 200 years of combined automotive experience, is a world-renowned leader in brake technology and product development.

  • Offer 20% increase in stopping power over competitive brake pads
  • Includes pin bushings where needed
  • PowerStop Z23 Evolution Sport carbon ceramic pads have a higher friction coefficient than competing brands
  • Evolution shims feature dual rubber layers instead of steel for 6 times less noise
  • Backed by an unmatched 3-year warranty for rotor cracking
  • Pad surfaces are thermal-scorched for fast break-in
  • Meets and exceeds factory specifications
  • Extreme Performance Cross-Drilled and Slotted discs dissipate heat and sweep away dust better
  • PowerStop brake kit is better and less expensive than doing brakes at a dealership
  • Makes your vehicle look customized
  • SKU#: P15K2036
  • Brand: Powerstop
  • Fit Note: Cab & Chassis, 4WD, Automatic Transmission, Cab & Chassis, 4WD, Cab & Chassis, RWD, Automatic Transmission, Cab & Chassis, RWD, Crew Cab Pickup, 4WD, Automatic Transmission, Crew Cab Pickup, RWD, Automatic Transmission, Extended Cab Pickup, 4WD, Automatic Transmission, Extended Cab Pickup, 4WD, Extended Cab Pickup, RWD, Automatic Transmission, Extended Cab Pickup, RWD, Standard Cab Pickup, 4WD, Automatic Transmission, Standard Cab Pickup, 4WD, Standard Cab Pickup, RWD, Automatic Transmission, Standard Cab Pickup, RWD
  • Bolt Pattern: 8 x 6.5 in.
  • Recommended Use: Street Performance
  • Disc Design: Cross-drilled and Slotted
  • Pad Material: Ceramic
  • Anticipated Ship Out Time: Same Day or Next Business Day
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
$62.93 List Price $118.00 Save $55.07 Availability: In Stock
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KYB MONOMAX SHOCK ABSORBER

KYB Monomax Shock Absorber is a performance gas shocks ideal for hot trucks, sport SUVs, and 4WDs. Engineered to provide performance and stability, this offers specific valving for extreme handling. With 1/2-in. diameter hardened piston rod and large diameter piston for added strength, enhanced functionality and durability required by your vehicle can be attained.

  • SKU#: KY565102
  • Brand: KYB
  • Fit Note: 4WD, 9200 GVW, Up to 8600 GVW, Except Quadrasteer, 4WD, Up to 8600 GVW, Except Quadrasteer, RWD, 9200 GVW
  • Type: Shock absorber
  • Color/Finish: Red
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Damping Type: Non-adjustable
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
Rating: (see review/s)

"the bushings would not work on my 2500 HD.. had to use old bushings... no instructions or parts list..." posted by: Wild on September 7, 2011

"Cant say nothining bad see how the hold up after a season of driving on washboard roads." posted by: Bob on July 25, 2011 view all 2 reviews

$256.98 List Price $303.24 Save $46.26 Availability: In Stock
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EBC – 3GD DRILLED AND SLOTTED SPORT BRAKE DISCS

3GD drilled and slotted sport brake discs by EBC offer high-performance enthusiasts better, cleaner braking with their machined, slotted design that keeps dirt, road grime and moisture out of the brakes while also eliminating air noise. EBC, top manufacturer and supplier of aftermarket braking components for daily drivers and race cars, holds several patents in braking technology that benefit not only the motorsports industry but also the solar, military and railroad industries.

  • Designed specifically for passenger cars, SUVs, and trucks that tow
  • Zero distortion guaranteed – each disc is CNC-machined, balanced and 100% run-out inspected
  • Meets/exceeds factory quality standards
  • Deflects dirt, water and debris
  • Comes in gold or black anodized finish options
  • Secondary benefit of even brake pad wear
  • Drilled holes and wide-aperture slot design cools brakes quickly to avoid stress cracks
  • Recommended pads: EBC brake pads
  • Slotted design de-gasses and cools down brakes while reducing air noise
  • SKU#: E35GD7094
  • Brand: EBC
  • Fit Note: Cab & Chassis, 4WD, Cab & Chassis, RWD, Crew Cab Pickup, 4WD, Crew Cab Pickup, RWD, Extended Cab Pickup, 4WD, Extended Cab Pickup, RWD, Standard Cab Pickup, 4WD, Standard Cab Pickup, RWD
  • Design: Dimpled and slotted
  • Quantity Sold: Set of 2
  • Recommended Use: Street Performance
  • Anticipated Ship Out Time: 2-3 business days
  • Diameter: 12.79 in.
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | Base, WT
  • 1999-2004 | 8 Cyl 6.0L | SLE, SLT
(see more)
$398.19 List Price $696.69 Save $298.50 Availability: In Stock
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GIBSON – SPLIT REAR CAT-BACK EXHAUST SYSTEMS

Gibson’s Split Rear cat-back exhaust system is dyno-proven to dramatically increase the power band in the low to mid range, giving you more horsepower, torque and fuel economy and a design that leaves you room for a hitch, spare or roll pan. Gibson is known as the leading manufacturer of street-legal, high performance exhaust systems for trucks, SUVs, diesels, off-road vehicles and RVs.

  • Stainless exhausts backed by a lifetime warranty
  • Deep, rich sound (a bit louder when towing)
  • Patented Superflow technology means dramatically more efficient exhaust flow
  • Designed to work with most bumpers without interfering with a hitch, roll pan or spare tire
  • Comes in aluminized or stainless steel
  • Baffled and chambered design means optimal volumetric efficiency
  • Proven to improve torque, horsepower and gas mileage
  • Mandrel-bent tubing allows for continuous airflow
  • Polished stainless tips feature sleek clampless connection
  • Dyno-tested
  • Direct fit by vehicle year, make and model
  • Made in America
  • Legal in all 50 states
  • SKU#: G275542
  • Brand: Gibson
  • Fit Note: Aluminized, Exit Is Straight Out The Back, Incl. Muffler/Pipes/Stainless Tips/Hangers/Clamps, With Stock Single Inlet Muffler, 4WD Must Remove Spare Tire, 78.0 in. Bed, Standard Cab Pickup, 4WD, Aluminized, Exit Is Straight Out The Back, Incl. Muffler/Pipes/Stainless Tips/Hangers/Clamps, With Stock Single Inlet Muffler, 4WD Must Remove Spare Tire, 78.0 in. Bed, Standard Cab Pickup, RWD
  • Quantity Sold: Assembly
  • Muffler Sound Level: Aggressive
  • Recommended Use: Performance
  • Advertised Power Gains: 15-20 h.p.
  • Anticipated Ship Out Time: 3-4 business days
(see more)
Fits the following GMC Sierra 2500 Years:
  • 1999-2000 | 8 Cyl 5.3L | SL, SLE
$324.91 List Price $383.39 Save $58.48 Availability: In Stock
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ANZO – PROJECTOR U-BAR HEADLIGHTS

Projector U-bar headlights by Anzo give you that highly customized look and feel of high-end modern European vehicles – in less than 30 minutes. Featuring state-of-the-art design and technology, Anzo’s projector U-bar headlights are a great way to reinvent yourself in a flash.  Based in Southern California, AnzoUSA is a progressive leader in LED and performance lighting technology and manufactures aftermarket products that are not only affordable but held to the highest of international quality standards.

  • Projector bulb technology means more focused light beams than old-school lights
  • Superior for night driving
  • Exclusive U-bar design offers European luxury style without the cost of buying a luxury vehicle
  • Street legal/DOT-compliant
  • State-of-the-art CAD design & technology
  • Offer plug-n-play simplicity
  • Waterproof and fully-sealed electrical system
  • Backed by an impressive 1-year warranty
  • Available in clear, chrome, black and/or various combinations
  • Install in less than an hour
  • SKU#: A1R111304
  • Brand: Anzo
  • Fit Note: Cab & Chassis, Crew Cab Pickup, Extended Cab Pickup, Standard Cab Pickup
  • Quantity Sold: Complete Set
  • Light Source: Halogen
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Assembly: With Bulb(s)
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | All Engines | WT
  • 2002-2004 | All Engines | Base
(see more)
$50.99 List Price $84.99 Save $34.00 Availability: In Stock
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RANCHO RS5000 SHOCK ABSORBER

Experience exceptional performance and comfort when you install Rancho's rebuildable RS5000 Shock Absorbers. These light truck shocks exhibit an expanded tube design and valving technology. The expanded tube design allows for cooler operating temperatures. While the 10-stage velocity sensitive valving allows the shock to self-adjust as speed and road conditions change. The combination of these features delivers the comfortable highway ride and superb off-road performance you need.

Features and Benefits:

  • 0.63 in. diameter chrome piston rod
  • Ten-stage velocity sensitive valving for rugged performance on and off the road
  • Expanded design provides more fluid capacity for lower operating temperatures
  • Internal rebound bumper and red dust boot to protect the piston rod from contaminants
  • SKU#: R38RS5274
  • Brand: Rancho
  • Fit Note: With 0" - 2 1/2" Rear Raised Height, Without Quadrasteer, 4WD, With 0" Rear Raised Height, Without Quadrasteer, RWD, With 1" - 2 1/2" Rear Raised Height, Without Quadrasteer, 4WD
  • Type: Shock absorber
  • Color/Finish: White
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Damping Type: Non-adjustable
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
$642.41 List Price $831.36 Save $188.95 Availability: In Stock
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MAGNAFLOW PERFORMANCE EXHAUST SYSTEMS

Over the past 30 years, Magnaflow has grown as a market leader of exhaust systems, focusing on three key elements with each product they produce—quality, power and sound. Magnaflow’s Performance exhaust systems feature stainless steel construction and mandrel bent pipes, allowing for greater fuel economy and improved performance. A full-bodied exhaust note, emblematic of the brand, is achieved through the smooth, lap-joint welded body, tightly packed with acoustical fibers designed to dampen irritating pitch tones.

  • SKU#: M6615780
  • Brand: Magnaflow
  • Fit Note: 96.0 in. Bed, Extended Cab Pickup
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Bolt/Clamp On
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2002 | 8 Cyl 6.0L | Base
  • 2001-2002 | 8 Cyl 6.0L | SL, SLE, SLT
$200.83 List Price $236.98 Save $36.15 Availability: In Stock
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SPYDER – PROJECTOR HEADLIGHTS

Projector headlights by Spyder will not only give you that cool halo effect of modern luxury car headlights but will keep you safer on the road at night with dramatically improved lighting performance. Spyder is a quality distributor of OEM-compliant aftermarket performance lighting products, dress-up and tuning products for today’s automotive enthusiast.

  • DOT-compliant/legal in all 50 states
  • Dramatically improves the look of your vehicle and its lighting output
  • Projector housing casts better light for better driving at night
  • Soft yet bright halo can also be added to stock lights for an accent
  • Certain vehicles will require simple wiring
  • Higher quality than stock headlights
  • SKU#: PRO-YD-CDE00-HL-C
  • Brand: Spyder
  • Fit Note: Extended Cab Pickup, Standard Cab Pickup
  • Color/Finish: Clear Lens; Chrome Housing
  • Product Fit: Direct Fit
  • Quantity Sold: Complete Set
  • Light Source: Halogen projector with LED Halo
  • Recommended Use: Performance
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2003-2004 | 8 Cyl 6.0L | WT
  • 2002-2004 | 8 Cyl 6.0L | Base
(see more)
Rating: (see review/s)

"Came with no instructions. Had to modify vehicle to receive headlight mounting pins also the bulb retaining nut." posted by: barren on July 5, 2014

$339.99 List Price $439.99 Save $100.00 Availability: In Stock
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FLOWMASTER  – AMERICAN THUNDER EXHAUST SYSTEMS

Flowmaster’s American Thunder chambered exhaust system is dyno-proven to dramatically increase the power band, giving you more horsepower, torque, fuel economy and a new image with an aggressive, rich exhaust tone. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Flowmaster’s most popular exhaust system
  • Features an aggressive sound
  • 3-year limited warranty for aluminized steel/lifetime warranty for stainless steel
  • Come in aluminized or stainless steel
  • Proven to improve torque, horsepower and gas mileage
  • Mandrel-bent tubing allows for continuous airflow
  • Quick and easy installation
  • Best for muscle cars and trucks
  • Passenger side, split  or driver side exit design
  • Dyno-tested
  • Direct fit by vehicle year, make and model
  • SKU#: F1317325
  • Brand: Flowmaster
  • Fit Note: 78.0 in. Bed, Extended Cab Pickup, 3 in. Tailpipe, 78.0 in. Bed, Extended Cab Pickup, Incl. 3 in. Tailpipe, Heat Shield
  • Quantity Sold: Assembly
  • Muffler Sound Level: Aggressive
  • Recommended Use: Performance
  • Advertised Power Gains: Typically 5-7% increase over stock
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following GMC Sierra 2500 Years:
  • 2002 | 8 Cyl 6.0L | Base
  • 1999-2002 | 8 Cyl 6.0L | SL, SLE, SLT
Rating: (see review/s)

"Received as a complete package with instructions easy to follow. Was able to remove old system and install the new system within about 1 hr. Used the clamp that was sent and did not weld pipes, just incase I wanted to remove easily. The system has a nice tone outside, however, it is quite loud in the cab of the truck. Had to turn the radio a few clicks just to hear the music. Just a note, this system has not increased power or increase gas mileage." posted by: Old Car Guy on October 14, 2009

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