Superchips Cortex-For Ford Diesel and Gas Powered Trucks and SUV's

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2950 - SUPERCHIPS CORTEX FOR CHEVY, GM DIESEL OR GAS TRUCKS AND CARS

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Orig. Price:	$429.00
Sale Price:	$379.99
Prod. Code:	2950

Superchips Cortex Paq

1999-2008 Chevy GMC Diesel & Gas

Part #2950

FREE US OVERNIGHT SHIPPING

Alaska, Hawaii, Puerto Rico, and International Buyer please email for a shipping quote.

The Cortex performance tuner is Superchips premium handheld product. When Cortex was introduced it was a groundbreaking device offering exclusive value-added features the competition still to this day can’t match including a 2-year powertrain warranty and the ability to tune a second vehicle from the same OEM family on one tuner with Multivin application. The second vehicle tuning is available exclusively through Superchips internet update store**. And of course, Cortex delivers all the incredible performance results Superchips customers have come to expect from the industry leader.

**The Multvin feature currently covers Ford and General Motors applications only.

Tuning

Multi-VIN capable
Industry leading tuning
Performance tunes available for all vehicles
Tunes are engineered across entire RPM range providing greater increases in horsepower, torque and better drivability

Tunes Available (vary by vehicle)

93-Performance
91-Performance
89-Performance
87-Performance
Heavy load towing
Light load towing
Fuel Economy tuning
Stock w/ Options
Transmission Only
Factory Stock

Advanced Engine Performance

Adjust speed and rev limiter on most vehicles
Tunes compatible with many hard part additions including cold-air-intake, exhaust, air filters, throttle body spacer.
For vehicles requiring custom tuning to work with specific hard parts, tunes are available for purchase through Superchips internet update store.
Fan temperature on/off available on vehicles with electronic fan control.
Read & clear diagnostic trouble codes standard on all vehicles.

Transmission

Superchips Optimized transmission performance included on all vehicles including shift points and firmness.
Shift points and firmness controls available for many vehicles
Superchips tunes all transmissions for drivability improvements delivering optimized vehicle performance.

Advanced Transmission Performance

Advanced transmission tuning app available for purchase via Superchips internet update store.

Three Adjustable Shift Schedules

Normal for day-to-day driving
Low for 4x4 and AWD
0-Drive Offer for vehicles with overdrive off option.

Tuning Options for Each Shift Schedule

Shift 1, 2, 2P, 3, & 4 up
Shift 2 prime down (06 & newer)
Shifts 5, 4, 3, 3-2 prime (04 & 05) & 2 down

Adjustable Parameters within Each Shift Point

Torque Management: WOT & Part Throttle
WOT: 1^st, 2^nd, 2^nd_Prime, 3^rd, 4^th
Part Throttle: 1 up, 2 up, 2 Prime up, 3 up, & 4 up
The app also allows you to return to stock, reset user values or save your settings for future use.
Currently available for Dodge 5.7L HEMI, 4.7L, 4.0L, and 3.8L engines.

NOTE: Features vary by year, make, model, and engine. Search by vehicle in question to find out the details. All Superchips tuning products for gasoline-fueled vehicles are either covered under CARB Executive Order number or are in a pending state. All non-racing Superchips tuning products for diesel-fueled vehicles are on the CARB products in progress list pending CARB testing and approval.

Chevrolet GMC Diesel	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
Chevrolet Silverado & GMC Sierra 2500 3500	07-10	6.6L LMM	No	No	No	No	No
	02-07	6.6L LB7, LLY, LBZ	No	No	No	Yes	26-38
	2001	6.6L LB7	No	No	No	No	No
	Snake River Performance
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	07-10	6.6L LMM	No	No	No	+77.0	+117.0 lb-ft
	02-07	6.6L LB7, LLY, LBZ	No	No	No	+119.9	+206.4 lb-ft
	2001	6.6L LB7	No	No	No	+88.9	+141.4 lb-ft

CHEVROLET GAS	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
Silverado SS	05-08	6.0L	All	Yes	Yes	Yes	26-38
	99-04	6.0L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	05-08	6.0L	Yes	Yes	Yes	+25.1	+28.7 lb-ft
	99-04	6.0L	Yes	Yes	No	+23.7	+22.4 lb-ft
Silverado 1500	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-08	6.0L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+25.1	+28.7 lb-ft
	Snake River Performance
Silverado 1500, Silverado XFE	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2009	5.3L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+14.9	+15.4 lb-ft
Silverado 1500	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-08	5.3L	All	Yes	Yes	Yes	26-38
	2009	4.8L	All	Yes	Yes	Yes	26-38
	2008	4.8L	All	Yes	Yes	Yes	26-38
	2007	4.8L	All	Yes	Yes	Yes	26-38
	05-06	4.8L	All	Yes	Yes	Yes	26-38
	2006	4.3L	All	Yes	Yes	Yes	26-38
	99-04	6.0L	All	Yes	Yes	Yes	26-38
		5.3L	All	Yes	Yes	Yes	26-38
		4.8L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	05-08	5.3L	Yes	Yes	Yes	+18.0	+17.0 lb-ft
	2009	4.8L	Yes	Yes	Yes	+11.2	+11.3 lb-ft
	2008	4.8L	Yes	Yes	Yes	+18.1	+19.2 lb-ft
	2007	4.8L	Yes	Yes	Yes	+13.1	+22.0 lb-ft
	05-06	4.8L	Yes	Yes	Yes	+13.1	+16.6 lb-ft
	2006	4.3L	Yes	Yes	Yes	+19.0	+24.0 lb-ft
	99-04	6.0L	Yes	Yes	No	+23.7	+22.4 lb-ft
		5.3L	Yes	Yes	No	+18.0	+17.0 lb-ft
		4.8L	Yes	Yes	No	+13.1	+16.6 lb-ft
	Snake River Performance
Silverado 1500 HD	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	99-04	6.0L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	No	+23.7	+22.4 lb-ft
Silverado 2500 (New Body) 3500 (New Body)	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2009	6.0L	Yes	Yes	No	Yes	No
	07-08	6.0L	All	Yes	Yes	Yes	No
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	2009	6.0L	Yes	Yes	Yes	+42.2	+47.9lb-ft
	07-08	6.0L	No	Yes	Yes	+48.0	+54.6 lb-ft
	Snake River Performance
Silverado 2500 (Classic Body) 3500 (Classic Body)	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-07	6.0L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+23.7	+22.4 lb-ft
Silverado 2500	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	99-00	7.4L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	No	+25.0	+33.0 lb-ft
	Snake River Performance
Silverado 2500 HD 3500 HD	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	01-07	8.1L	4L80E	Yes	Yes	Yes	26-38
	01-07	8.1L	Allison	No	No	No	No
	99-00	7.4L	All	Yes	Yes	Yes	26-38
	99-04	6.0L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	01-07	8.1L (4L80E)	Yes	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	01-07	8.1L (Allison)	No	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	99-00	7.4L	Yes	Yes	No	+25.0	+33.0 lb-ft
	99-04	6.0L	Yes	Yes	No	+23.7	+22.4 lb-ft
Colorado	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	08-09	5.3L	All	Yes	Yes	Yes	No
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			No	Yes	No	+31.2	+33.5 lb-ft
	Snake River Performance
C/K Series	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	99-00	5.7L	All	Yes	Yes	Yes	26-38
		5.0L	All	Yes	Yes	Yes	26-38
		Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
		5.7L	Yes	Yes	No	+21.0	+34.0 lb-ft
		5.0L	Yes	Yes	No	+18.0	+28.0 lb-ft

Chevrolet Gas	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
Avalanche	01-07	8.1L	4L80E	Yes	Yes	Yes	26-38
	01-07	8.1L	Allison	No	No	No	No
	99-00	7.4L	All	Yes	Yes	Yes	26-38
	05-08	6.0L	All	Yes	Yes	Yes	26-38
	2009	5.3L	Yes	Yes	Yes	Yes	26-38
	05-08	5.3L	All	Yes	Yes	Yes	26-38
	99-04	6.0L	All	Yes	Yes	Yes	26-38
	99-04	5.3L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	01-07	8.1L (4L80E)	Yes	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	01-07	8.1L (Allison)	No	No	N/A 01-05	+32.6	+37.6 lb-ft
	99-00	7.4L	Yes	Yes	No	+25.0	+33.0 lb-ft
	05-08	6.0L	Yes	Yes	Yes	+25.1	+28.7 lb-ft
	2009	5.3L	Yes	Yes	Yes	+25.1	+22.7 lb-ft
	05-08	5.3L	Yes	Yes	Yes	+18.0	+17.0 lb-ft
	99-04	6.0L	Yes	Yes	No	+23.7	+22.4 lb-ft
	99-04	5.3L	Yes	Yes	No	+18.0	+17.0 lb-ft
	Snake River Performance
Suburban	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2009	6.0L	Yes	Yes	No	Yes	No
	05-08	6.0L	All	Yes	Yes	Yes	26-38
	2009	5.3L	Yes	Yes	Yes	Yes	26-38
	05-08	5.3L	All	Yes	Yes	Yes	26-38
	01-07	8.1L	4L80E	Yes	Yes	Yes	26-38
	01-07	8.1L	Allison	No	No	No	No
	99-04	6.0L	All	Yes	Yes	Yes	26-38
	99-04	5.3L	All	Yes	Yes	Yes	26-38
	99-00	7.4L	All	Yes	Yes	Yes	26-38
	99-00	5.7L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	2009	6.0L	Yes	Yes	Yes	+42.2	+47.9 lb-ft
	05-08	6.0L	Yes	Yes	Yes	+25.1	+28.7 lb-ft
	2009	5.3L	Yes	Yes	Yes	+25.1	+22.7 lb-ft
	05-08	5.3L	Yes	Yes	Yes	+18.0	+17.0 lb-ft
	01-07	8.1L (4L80E)	Yes	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	01-07	8.1L (Allison)	No	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	99-04	6.0L				+23.7	+22.4 lb-ft
	99-04	5.3L				+18.0	+17.0 lb-ft
	99-00	7.4L	Yes	Yes	No	+25.0	+33.0 lb-ft
	99-00	5.7L	Yes	Yes	No	+21.0	+34.0 lb-ft
Tahoe, Tahoe XFE	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2009	5.3L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+14.9	+15.4 lb-ft
Tahoe	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-08	5.3L	All	Yes	Yes	Yes	26-38
	2009	5.3L	All	Yes	Yes	Yes	26-38
	2008	4.8L	All	Yes	Yes	Yes	26-38
	2007	4.8L	All	Yes	Yes	Yes	26-38
	05-06	4.8L	All	Yes	Yes	Yes	26-38
	05-08	4.8L	All	Yes	Yes	Yes	26-38
	99-04	5.3L	All	Yes	Yes	Yes	26-38
	99-04	4.8L	All	Yes	Yes	Yes	26-38
	99-00	5.7L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	05-08	5.3L	Yes	Yes	Yes	+14.9	+15.4 lb-ft
	2009	5.3L	Yes	Yes	Yes	+18.0	+17.0 lb-ft
	2008	4.8L	Yes	Yes	Yes	+11.2	+11.3 lb-ft
	2007	4.8L	Yes	Yes	Yes	+18.1	+19.2 lb-ft
	05-06	4.8L	Yes	Yes	Yes	+13.1	+22.0 lb-ft
	05-08	4.8L	Yes	Yes	Yes	+13.1	+16.6 lb-ft
	99-04	5.3L	Yes	Yes	No	+18.0	+17.0 lb-ft
	99-04	4.8L	Yes	Yes	No	+13.1	+16.6 lb-ft
	99-00	5.7L	Yes	Yes	No	+21.0	+34.0 lb-ft
	Snake River Performance
SSR	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-06	6.0L	All	Yes	Yes	Yes	No
	03-04	5.3L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	05-06	6.0L	No	Yes	Yes	+35.0	+35.7 lb-ft
	03-04	5.3L	Yes	Yes	Yes	+18.7	+32.8 lb-ft
Trailblazer SS	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	06-08	.0L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	No	+29.5	+54.8 lb-ft
	Snake River Performance
Trailblazer	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	03-04	5.3L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	No	+18.0	+17.0 lb-ft

Chevrolet Gas	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
Camaro SS (Automatic)	2010	6.2L L99	Auto	Yes	No	Yes	No
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+21.0	+21.0 lb-ft
Camaro SS (Manual)	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2010	6.2L L99	Manual	No	No	TBA	No
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			TBA	TBA	TBA	+19.9	+18.3 lb-ft
Camaro Z28, Camaro SS	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	99-02	5.7L LS 1	All	Yes	Yes	Yes	No
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+15.1	+13.6 lb-ft
Corvette ZO6	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	06-08	7.0L LS1	All	No	No	Yes	No
	01-04	5.7L LS6	All	Yes	Yes	Yes	No
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	06-08	7.0L LS1	No	Yes	Yes	+23.1	+21.0 lb-ft
	01-04	5.7L LS6	Yes	Yes	Yes	+11.2	+11.9 lb-ft
	Snake River Performance
Corvette	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2006	6.0L LS2	All	No	No	Yes	No
	2005	6.0L LS2	All	Yes	Yes	Yes	No
	99-04	5.7 L LS1	All	Yes	Yes	Yes	No
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	2006	6.0L LS2	No	Yes	Yes	+11.7	+11.0 lb-ft
	2005	6.0L LS2	No	Yes	Yes	+11.7	+11.0 lb-ft
	99-04	5.7 L LS1	Yes	Yes	Yes	+15.1	+13.6 lb-ft
Impala SS	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	06-08	5.3L LS4 (FWD)	All	Yes	Yes	Yes	No
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			No	Yes	No	+14.9	+13.8 lb-ft
Monte Carlo SS	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	06-07	5.3L LS4 (FWD)	All	Yes	Yes	Yes	No
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			No	Yes	No	+14.9	+13.8 lb-ft

Buick	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
LaCrosse Super	2008	5.3L	All	Yes	Yes	Yes	26-38
Ranier	03-04		All	Yes	Yes	Yes	26-38
	Year		Gear	Rev Limiter	Adjust Fan	HP	TQ
LaCrosse Super	2008		Yes	Yes	No	+14.9	+13.9 lb-ft
Ranier	03-04		Yes	Yes	No	+18.0	+17.0 lb-ft
	Snake River Performance
Cadillac	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
Escalade	2008	6.2L	Yes	Yes	Yes	Yes	26-38
	2007	6.2L	Yes	Yes	Yes	Yes	26-38
	01-07	5.3L	All	Yes	Yes	Yes	26-38
	01-06	6.0L	All	Yes	Yes	Yes	26-38
	99-00	5.7L	All	Yes	Yes	Yes	26-38
CTS-V	2005	5.7L LS6	All	Yes	Yes	Yes	No
CTS-V	2004	5.7L LS1 LS6	All	Yes	Yes	Yes	No
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
Escalade	2008	6.2L	Yes	Yes	Yes	+12.8	+11.5 lb-ft
	2007	6.2L	Yes	Yes	Yes	+19.9	+17.1 lb-ft
	01-07	5.3L	Yes	Yes	Yes	+18.1	+26.1 lb-ft
	01-06	6.0L	Yes	Yes	Yes	+12.9	+15.9 lb-ft
	99-00	5.7L	Yes	Yes	No	+21.0	+34.0 lb-ft
CTS-V	2005	5.7L LS6	Yes	Yes	Yes	+14.0	+13.2 lb-ft
CTS-V	2004	5.7L LS1 LS6	Yes	Yes	Yes	+23.4	+25.0 lb-ft
	Snake River Performance

GMC GAS	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
Sierra 1500	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
	05-08	6.0L		All		Yes	Yes	Yes	26-38
	2009	5.3L		All		Yes	Yes	Yes	26-38
	05-08	5.3L		All		Yes	Yes	Yes	26-38
	2009	4.8L		All		Yes	Yes	Yes	26-38
	2008	4.8L		All		Yes	Yes	Yes	26-38
	2007	4.8L		All		Yes	Yes	Yes	26-38
	05-06	4.8L		All		Yes	Yes	Yes	26-38
	2006	4.3L		All		Yes	Yes	Yes	26-38
	99-04	5.3L		All		Yes	Yes	Yes	26-38
	99-04	4.8L		All		Yes	Yes	Yes	26-38
	Year	Engine		Gear		Rev Limiter	Adjust Fan	HP	TQ
	05-08	6.0L		Yes		Yes	Yes	+25.1	+28.7 lb-ft
	2009	5.3L		Yes		Yes	Yes	+14.9	+15.4 lb-ft
	05-08	5.3L		Yes		Yes	Yes	+18.0	+17.0 lb-ft
	2009	4.8L		Yes		Yes	Yes	+11.2	+11.3 lb-ft
	2008	4.8L		Yes		Yes	Yes	+18.1	+19.2 lb-ft
	2007	4.8L		Yes		Yes	Yes	+13.1	+22.0 lb-ft
	05-06	4.8L		Yes		Yes	No	+13.1	+16.6 lb-ft
	2006	4.3L		Yes		Yes	No	+19.0	+24.0 lb-ft
	99-04	5.3L		Yes		Yes	No	+18.0	+17.0 lb-ft
	99-04	4.8L		Yes		Yes	No	+13.1	+16.6 lb-ft
	Snake River Performance
Sierra 1500 HD	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
	05-08	6.0L		All		Yes	Yes	Yes	26-38
				Gear		Rev Limiter	Adjust Fan	HP	TQ
				Yes		Yes	No	+25.1	+28.7 lb-ft
Sierra 2500 (New Body) 3500 (New Body)	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
	2009	6.0L		Yes		Yes	No	Yes	No
	07-08	6.0L		All		Yes	Yes	Yes	No
	Year	Engine		Gear		Rev Limiter	Adjust Fan	HP	TQ
	2009	6.0L		Yes		Yes	Yes	+42.2	+47.9lb-ft
	07-08	6.0L		No		Yes	Yes	+48.0	+54.6 lb-ft
	Snake River Performance
Sierra 2500 (Classic Body) 3500 (Classic Body)	Year	Engine			Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-07	6.0L			All	Yes	Yes	Yes	26-38
					Gear	Rev Limiter	Adjust Fan	HP	TQ
					Yes	Yes	Yes	+23.7	+22.4 lb-ft
Sierra 2500, 3500	Year	Engine			Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	07-08		6.6L LMM		No	No	No	No	No
	02-07		6.6L LB7, LLY, LBZ		No	No	No	No	26-38
	2001		6.6L LB7		No	No	No	No	No
	Year		Engine		Gear	Rev Limiter	Adjust Fan	HP	TQ
	07-08		6.6L LMM		No	No	No	+77.0	+117.0 lb-ft
	02-07		6.6L LB7, LLY, LBZ		No	No	No	+119.9	+206.4 lb-ft
	2001		6.6L LB7		No	No	No	+88.9	+141.4 lb-ft
	Snake River Performance
Sierra 2500 HD 3500 HD	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
	01-07	8.1L		4L80E		Yes	Yes	Yes	26-38
	01-07	8.1L		Allison		No	No	No	No
	99-00	7.4L		All		Yes	Yes	Yes	26-38
	99-04	6.0L		All		Yes	Yes	Yes	26-38
	Year	Engine		Gear		Rev Limiter	Adjust Fan	HP	TQ
	01-07	8.1L (4L80E)		Yes		Yes	N/A 01-05	+32.6	+37.6 lb-ft
	01-07	8.1L (Allison)		No		Yes	N/A 01-05	+32.6	+37.6 lb-ft
	99-00	7.4L		Yes		Yes	No	+25.0	+33.0 lb-ft
	99-04	6.0L		Yes		Yes	No	+23.7	+22.4 lb-ft
Canyon	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
	08-09	5.3L		All		Yes	Yes	Yes	No
				Gear		Rev Limiter	Adjust Fan	HP	TQ
				No		Yes	No	+31.2	+33.5 lb-ft
	Snake River Performance
C/K Series	Year	Engine		Trans		Shift Points	Shift Firmness	Speed Limiter	Tire
	99-00	5.7L		All		Yes	Yes	Yes	26-38
		5.0L		All		Yes	Yes	Yes	26-38
		Engine		Gear		Rev Limiter	Adjust Fan	HP	TQ
		5.7L		Yes		Yes	No	+21.0	+34.0 lb-ft
		5.0L		Yes		Yes	No	+18.0	+28.0 lb-ft

GMC Gas	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
Yukon XL	01-07	8.1L	4L80E	Yes	Yes	Yes	26-38
	01-07	8.1L	Allison	No	No	No	No
	99-04	6.0L	All	Yes	Yes	Yes	26-38
	99-04	5.3L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	01-07	8.1L (4L80E)	Yes	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	01-07	8.1L (Allison)	No	Yes	N/A 01-05	+32.6	+37.6 lb-ft
	99-04	6.0L	Yes	Yes	No	+23.7	+22.4 lb-ft
	99-04	5.3L	Yes	Yes	No	+18.0	+17.0lb-ft
	Snake River Performance
Envoy	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	03-04	5.3L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	No	+18.0	+17.0 lb-ft
Yukon, Yukon XL	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	2009	5.3L	All	Yes	Yes	Yes	26-38
	05-08	5.3L	All	Yes	Yes	Yes	26-38
	2009	4.8L	All	Yes	Yes	Yes	26-38
	2008	4.8L	All	Yes	Yes	Yes	26-38
	2007	4.8L	All	Yes	Yes	Yes	26-38
	05-08	4.8L	All	Yes	Yes	Yes	26-38
	99-04	5.3L	All	Yes	Yes	Yes	26-38
	99-04	4.8L	All	Yes	Yes	Yes	26-38
	99-00	5.7L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	2009	5.3L	Yes	Yes	Yes	+14.9	+15.4 lb-ft
	05-08	5.3L	Yes	Yes	Yes	+18.0	+17.0 lb-ft
	2009	4.8L	Yes	Yes	Yes	+11.2	+11.3 lb-ft
	2008	4.8L	Yes	Yes	Yes	+18.1	+19.2 lb-ft
	2007	4.8L	Yes	Yes	Yes	+13.1	+22.0 lb-ft
	05-08	4.8L	Yes	Yes	Yes	+13.1	+16.6 lb-ft
	99-04	5.3L	Yes	Yes	No	+18.0	+17.0 lb-ft
	99-04	4.8L	Yes	Yes	No	+13.1	+16.6 lb-ft
	99-00	5.7L	Yes	Yes	No	+21.0	+34.0 lb-ft
	Snake River Performance
Suburban	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	99-00	7.4L	All	Yes	Yes	Yes	26-38
	99-00	5.7L	All	Yes	Yes	Yes	26-38
	Year	Engine	Gear	Rev Limiter	Adjust Fan	HP	TQ
	99-00	7.4L	Yes	Yes	No	+25.0	+33.0 lb-ft
	99-00	5.7L	Yes	Yes	No	+31.0	+34.0 lb-ft
Denali	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	07-08	6.2L	Yes	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+19.9	+17.1 lb-ft
	Snake River Performance
Yukon XL Denali	Year	Engine	Trans	Shift Points	Shift Firmness	Speed Limiter	Tire
	05-08	6.0L	All	Yes	Yes	Yes	26-38
			Gear	Rev Limiter	Adjust Fan	HP	TQ
			Yes	Yes	Yes	+25.1	+28.7 lb-ft

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