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				2000 Hummer Model Year changes.
			A welcome change for 2000 was the reintroduction of the 2-piece steel wheel available again for the first time since early 1996. The two piece wheel offers a beadlock that locks both beads of the tire. The 1-piece wheel offered in '96 thru '99 had a bead lock that only locked one bead. Another problem with the 1-piece steel wheel was that many were not completely straight from the Original Equipment Manufacturer. Also new for 2000 were optional 1-piece alloy wheels, the first alloy wheels ever offered as a factory option. Contrary to what was shown in the 2000 Brochure, 17" alloy wheels were not available until 2001 and 17" 2-piece alloy wheels weren't available until 2002. Also new for 2000 was the Factory Slantback with rear hatch. Because of production difficulties, only 40 of the Slantbacks were built. The Slantbacks were not available until the end of the model year and featured the 2001 larger heated mirrors. The mirrors are a welcome feature to combat the Slantbacks large blind spots.
		Powertrain and Identification Information. VIN 10th Digit designating year = "Y" Engine: 6.5L Turbo Diesel 195 H.P. 430 lb. ft. VIN 4th digit ="Z" 4L80E Electronic 4 speed Automatic Transmission. VIN 5th digit ="A" Top Speed 83+ mph. 1,333 '00 models built.
	Significant changes for 2000. 2-piece steel wheel available again for first time since early '96. Updated version with regular hex nuts, special 5-sided socket no longer needed to disassemble. Factory Aluminum Alloy wheels available for the first time, available as running change early production. New Slantback Model available late in model year 2000. New longer life brake pads nearly double expected life, reduced vibration and noise. Axles have tighter tolerances and reduced vibration. New Cowl Harness. Optional Dark tint rear windows. New front console. New glow plugs and controller, glow plug malfunction now triggers "Check Engine" light. New smaller right side crash pad. New radio; different appearance and Weather Band now included. New CD Changer. New Deluxe Rearview mirror with auto-dimming feature, cancels in reverse gear. New seat fabric. New rear console with cup holders. Rear console mounted radio controls. Speedometer with trip meter. New color Metallic Pewter. New color Woodland Green. Night Storm Color Discontinued mid '99 Enhanced engine block- Turbo Diesel Engines with block castings before May 1999 are susceptible to #8 cylinder cracks. Most frequently the first symptom of a cylinder crack is coolant being forced out of the cooling system causing the "check coolant" light to illuminate. Many engines have been replaced with blocks of the same design. Even though the enhanced blocks were first produced in May 1999 it took some time before they made their way through the system and into Hummers as either original equipment or for replacement. Even Hummers produced in 2000 are likely to have the pre-May 1999 block casting. There is a casting number on the right rear of the block under the cylinder head which should be E_99 (May 1999) or later. Unfortunately the codes changed through the years so identifying the enhanced blocks is even more difficult. Later blocks also use metric bolts to attach the bell housing but it is unclear whether this clearly identifies an enhanced block. Although enhanced blocks were installed in Hummers produced before the engine manufacturer change to General Engine Products (GEP), the easiest way to make sure a Hummer left the factory with an enhanced block is to check the 4th digit of the VIN on 2001 and later 6.5L turbo diesels. If the 4th digit is an "F" the engine was produced by GEP and is sure to have the enhanced block from the factory.

'00 Specifications, options & Prices:

Available colors:

Woodland Green. New color for 2000.

Pewter Metallic. New color for 2000.

Mesa Dusk.

Candy Apple Red.

Competition Yellow.

White. (W8)

Bright White. (W14)

Silver Metallic. (S15)

Black. (B9)

Body Styles Available in '00:

HMCS. 4-Passenger Wagon. VIN 6th & 7th Digits "84"

HMSB. 4-Passenger Slantback. (only year available). Beware of Imitations , VIN 6th & 7th Digits "91"

HMCO. 4-Passenger Full Door Open Top. VIN 6th & 7th Digits "90"

HMC4. 4-Passenger Hard Top. VIN 6th & 7th Digits "83"

XLC2. 2-Passenger Hard Top Enlarged Cab. VIN 6th & 7th Digits "89"

TOTAL PRODUCTION COUNT BY MODEL AND COLOR. "X" Colors are "Experimental" or special order, often seen as production colors in later years.

COLOR FULL DOOR OPEN TOP (HMCO) WAGON (HMCS) HARD TOP (HMC4) SLANTBACK (HMSB) 2-PASS. ENLARGED CAB (XLC2) TOTAL B9 (Gloss Black) 91 180 53 9 2 335 C22 (Mesa Dusk) 20 35 9 3 67 G23 (Woodland Green) 46 77 20 5 148 L20 (Ocean Blue Metallic) 1 1 P17 (Burgandy Metallic) 1 1 P33 (Pewter) 63 108 12 5 1 189 R19 (Candy Apple Red) 48 52 16 6 2 124 S15 (Silver) 14 43 17 3 77 W14 (Bright White) 37 103 24 4 1 172 W8 (Gloss White) 5 9 3 17 Y20 (Competition Yellow) 100 58 14 4 1 177 X20 (Gloss Red R7) 4 4 X33 (Pewter) 6 10 2 18 X34 (Indigo Blue) 1 1 X35 (Int. Harvester Red) 1 1 Tan Interior 175 248 64 16 503 Gray Interior 255 429 109 24 13 830 Cloth 345 632 156 39 6 1178 Vinyl 85 45 17 1 7 155 TOTAL 430 677 173 40 13 1333

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