Chevrolet 2006 Tahoe Specifications download pdf (Page 375)

Fuel E85 (85% Ethanol)

The 8th digit of your vehicle identiﬁcation number (VIN)

shows the code letter or number that identiﬁes your

engine. You will ﬁnd the VIN at the top left of the

instrument panel. See Vehicle Identiﬁcation Number

(VIN) on page 5-108.

If your vehicle has the 5.3L V8 engine (VIN Code Z only),

you may use either regular unleaded gasoline or ethanol

fuel containing up to 85% ethanol (E85); also see Fuel on

page 5-5. In all other engines, including the 5.3L V8

(VIN Code T), use only regular unleaded gasoline.

Only vehicles that have the 5.3L V8 engine (VIN Code Z)

may use 85% ethanol fuel (E85). General Motors

encourages the use of E85 in vehicles that are designed

to use it. The ethanol in E85 is a “renewable” fuel,

meaning it is made from renewable sources such as corn

and other crops.

Many service stations will not have an 85% ethanol

fuel (E85) pump available. The U. S. Department

of Energy has an alternative fuels website

(http://www.eere.energy.gov/afdc/infrastructure/locator.html)

that can help you ﬁnd E85 fuel. Those stations that do

have E85 should have a label indicating ethanol

content. Do not use the fuel if the ethanol content is

greater than 85%.

At a minimum, E85 should meet ASTM

Speciﬁcation D 5798.

To ensure quick starts in the wintertime, the E85 fuel

must be formulated properly for your climate according to

ASTM speciﬁcation D 5798. If you have trouble starting

on E85, it may be because your E85 fuel is not properly

formulated for your climate. If this happens, switching to

gasoline or adding gasoline to your fuel tank may improve

starting. Your vehicle is designed to accommodate a

mixture of gasoline and E85 fuel. For good starting and

heater efficiency below 32°F (0°C), the fuel mix in the fuel

tank should contain no more than 70% ethanol.

E85 has less energy per gallon than gasoline, so you

will need to reﬁll your fuel tank more often when

using E85 than when you are using gasoline. Regular

unleaded gasoline is recommended when pulling a

trailer. For payload capacity with ethanol fuel, see

Loading Your Vehicle on page 4-48.

Notice: Some additives are not compatible with

E85 fuel and may harm your fuel system. Damage

caused by additives would not be covered by

your new vehicle warranty. Do not use additives

with E85 fuel.

Notice: Your vehicle was not designed for fuel that

contains methanol. Do not use fuel containing

methanol. It can corrode metal parts in your fuel

system and also damage the plastic and rubber

parts. That damage would not be covered under

your warranty.

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Chevrolet 2006 Tahoe Specifications Page 375

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