Chevrolet Avalanche

First generation
Overview
Production	September 2001 – December 2005
Model years	2002-2006
Body and chassis
Platform	GMT805
Related	Chevrolet Silverado/GMC Sierra Chevrolet Suburban/GMC Yukon XL Cadillac Escalade ESV Cadillac Escalade EXT
Powertrain
Engine	5.3 L LM7 V8 (gasoline) 5.3 L L59 V8 (gasoline/E85) 8.1 L L18 V8 (gasoline)
Transmission	4-speed 4L60-E automatic 4-speed 4L80-E automatic
Dimensions
Length	2002–03: 221.7 in (5,631 mm) 2004–06: 221.6 in (5,629 mm)
Width	79.8 in (2,027 mm)
Height	2002–03: 73.3 in (1,862 mm) 2004–06: 73.6 in (1,869 mm)
Curb weight	2002-04: 5,632 lb (2,555 kg)

The Avalanche was launched in September 2001 as a 2002 model on the GMT800 platform. First year Avalanches featured light gray plastic body cladding, intended to provide visual distinction from the Suburban/Yukon XL. Avalanche also gave the public an advance look at the next generation of front fascia designs for the entire GM line. A full-length chrome strip splits each lamp assembly and the grille, with a gold Chevrolet "bow tie" in the center. The hood and fenders featured aggressive folds, in contrast to the soft box of the other GMT800 models.

GMT800 Chevrolet Avalanche WBH

2003 models featured a darker cladding, but GM's new president, Rick Wagoner, demanded the removal of this "unpopular" trim (as did certain elements of the public). From mid-year, Avalanche could be ordered without the cladding. The uncladded model, known as the Without Body Hardware (or better by its initialism "WBH"), and alternatively called "slicksides" by GM marketers, resembles the '03-'05 Silverado in the front.

Avalanche was nominated for the North American SUV of the Year award and was Motor Trend magazine's Truck of the Year for 2002.[1]

There were two engine choices:

• A Vortec 5.3 L V8 producing 285 hp (216 kW), for the half-ton 1500 series;
• A Vortec 8.1 L V8 with 340 hp (253 kW) and the 4L85-E four-speed transmission, for the three-quarter-ton 2500 series. The drive train is rear-wheel drive or available with selectable high/low four-wheel drive.

The Avalanche was originally marketed as being able to "change from an SUV to a super SUV". This was made possible by a plastic cover and an exclusive "midgate", called the Convert-a-Cab system by GM, which could open and close. The midgate was a divider behind the second row of seats that could be folded down, with the seats, to create a longer bed area, or folded up to make a larger cab area. A similar midgate was found on the Cadillac Escalade EXT, Hummer H2 SUT and the GMC Envoy XUV.[2]

For those who planned to go off-road in their Avalanche, a Z71 Off-Road package was available that added off-road suspension, GM's AutoTrac full-time, push-button four-wheel-drive system, all-terrain P265/70R17 white-lettered Goodyear tires, seventeen-inch alloy wheels, leather seating surfaces with waterproof accents, front dual power bucket seats, cloth door panel inserts, GM's OnStar telematics system, all-weather rubber floor mats, Chevrolet bowtie emblems embedded into the backrests of the seats (for 2002 models), dual-zone automatic climate controls with rear HVAC vents and remote controls, remote radio controls with headphone jacks for two pairs of headphones, a security system, gray-finished side running boards, power-adjustable, heated, side view mirrors, SRS side impact airbags, and more. Aside from these details, a Z71 Off-Road decal on the rear side panels identified an Avalanche equipped with this package. Full leather seating surfaces were an available option, also removing the cloth door panel inserts, and also added heated front seats.

For those who liked the styling of the Z71 Off-Road package but did not plan to take their Avalanche off-road, a Z66 Premium On-Road package was also available. The Z66 On-Road package featured all the equipment that the Z71 Off-Road package offered, but replaced the off-road suspension with sport on-road suspension, and did not offer four-wheel-drive. Aside from these details, a Z66 On-Road sticker on the rear side panels identified an Avalanche equipped with this package. As with the Z71 Off-Road package, full leather seating surfaces without the cloth accents were an available option, also removing the cloth door panel inserts, and also added heated front seats.

To further distinguish it from its Silverado siblings, the Avalanche was practically fully equipped and only came with bodyside cladding. The Avalanche included features such as sixteen-inch alloy wheels and tires (chromed steel on the 2500 model), an AM/FM stereo with single-disc CD player and six speakers, cloth seating surfaces, front bench seat with power front driver's seat, power windows, power door locks, keyless entry, full instrumentation, dual front airbags, and air conditioning. Options included OnStar telematics system, cassette player, leather seating surfaces, front dual power bucket seats that could be heated, and side airbags for the front seats. A North Face Edition, in partnership with the North Face brand included limited exterior color options, a unique Ebony/Green leather interior, special exterior ornamentation and decals, white-faced gauges, OnStar telematics system, specially colored door panel inserts and speaker grilles, and more.

For 2003, the Avalanche was slightly changed. A new interior, shared with the Chevrolet Tahoe and Chevrolet Suburban, added a new, larger steering wheel with subsequent audio system and OnStar controls and cruise and speed controls, an optional six-speaker premium Bose sound system with external amplifier, a new gauge cluster with information center, memory for the front driver's seat, brake and accelerator pedals and side view mirror position (on some models), new radio head units, which included an AM/FM stereo with single-disc CD/MP3 player and Radio Data System or an AM/FM stereo with six-disc CD/MP3 changer and Radio Data System, optional XM Satellite Radio, standard OnStar telematics system, optional rear audio controls with heaphone jacks, an optional rear DVD entertainment system by Panasonic with wireless headphones, new warning chimes that played through the vehicle's audio system instead of through a separate speaker behind the dashboard, and newly available seventeen-inch alloy wheels and tires.

Second generation (GMT900)
Overview
Production	April 2006 – April 2013
Model years	2007–2013
Body and chassis
Platform	GM GMT900 platform (Series GMT940: GMT941)
Related	Cadillac Escalade EXT Cadillac Escalade ESV Chevrolet Silverado/GMC Sierra Chevrolet Suburban/GMC Yukon XL
Powertrain
Engine	5.3 L LY5 V8 (gasoline) 5.3 L LMG V8 (gasoline/E85) 5.3 L LC9 V8 (gasoline/E85) 6.0 L L76 V8 (gasoline)
Transmission	4-speed GM 4L60-E transmission automatic (2007–08) 6-speed 6L80 automatic (2009–2013)
Dimensions
Length	221.3 in (5,621 mm)
Width	79.1 in (2,009 mm)
Height	76.6 in (1,946 mm)
Curb weight	5,840 lb (2649 kg)

The GMT900 Avalanche was introduced at the Chicago Auto Show in February 2006. Production of the redesigned Avalanche began at the Silao Assembly in April 2006. The Avalanche maintained the styled front end much like its sister vehicles, the Tahoe/Yukon and Suburban/Yukon XL, yet it still had the distinct midgate and integrated bed as found on the previous incarnation. It had all the same standard and available features as the Suburban and the Tahoe. The 2500 model of the previous generation was discontinued.

A special Z71 package was offered for the second generation Avalanche. This off-road package consisted of a suspension tuned for rough terrain, an exclusive automatic locking rear differential, aluminum under body skid plates (visible from the front of the pickup truck), wheel flares, badges, wheels and tires.

Later models introduced another version of the Vortec 5.3-liter V8 as the engine is now capable of running on E85 ethanol. When the 5.3 is running on normal gasoline, it produces 320 hp (239 kW) and 335 lb⋅ft (454 N⋅m) of torque whereas its output rises to 326 hp (243 kW) and 348 lb⋅ft (472 N⋅m) of torque on E85, up from 310 hp (231 kW) and 335 lb⋅ft (454 N⋅m) in 2009. For the 2010 model year, the 6.0-liter was dropped from the Avalanche lineup which left the 5.3 V8 as the only engine available for the SUV. In its final year, the 6.0-liter produced 366 hp (273 kW) and 376 lb⋅ft (510 N⋅m) of torque.

A 2007 Avalanche was given away to the Most Valuable Player of the 2006 Major League Baseball All-Star Game, Michael Young.

An Avalanche was regularly featured on the popular US crime drama CSI: New York and was driven by some members of the team.

In addition, a 2007 Z-71 Avalanche placed second in Speed TV's reality TV series 'Bullrun' in 2009.

A 2007 LTZ-trim Avalanche was featured in the 2017 film Baby Driver.

Discontinuation

In April 2012, GM announced that production of the Avalanche would end after the 2013 model year, after 2011 saw a sales decline of 2.6% to 20,088 vehicles.[3] Production of the Cadillac Escalade EXT also ended after the 2013 model year.

2013 Avalanche Z71 Black Diamond Last Edition

• 2002 - Motor Trend Truck of the Year[4]
• 2007 - Best New Pickup by Automotive Journalists Association of Canada[5]
• 2010 - J.D. Power Highest initial quality large light-duty pickup[6]
• 2013 - J.D. Power Highest initial quality large light-duty pickup[7]
• 2020 - Consumer Reports No. 6 on CR's 10 Most Reliable Used Pickups (2012-2013 model years)[8]

• Chevrolet Avalanche official site
• Chevrolet Trucks at Curlie

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