Gmc 2007 Sierra User Manual download pdf (Page 138)

Starting Procedure

1. With your foot off the accelerator pedal, turn

the ignition key to START. When the engine

starts, let go of the key. The idle speed will go

down as your engine gets warm. Do not

race the engine immediately after starting it.

Operate the engine and transmission

gently until the oil warms up and lubricates all

moving parts.

Your vehicle has a Computer-Controlled

Cranking System. This feature assists in

starting the engine and protects the electrical

system. If the ignition key is turned to the

START, and then released when the engine

begins cranking, the engine will continue

cranking until the vehicle starts or until

it exceeds the maximum cranking time allowed,

approximately 15 seconds to prevent cranking

motor damage. To prevent gear damage,

this system also prevents cranking if the

engine is already running. The engine cranking

can be stopped by turning the ignition switch

to the ACCESSORY or LOCK.

Notice: Holding your key in START for longer

than 15 seconds at a time will disengage

the starter motor, cause your battery to be

drained much sooner, and add excessive heat

that can damage your starter motor. Try not

to hold the key in START for longer than

15 seconds and wait about 15 seconds

between each try to help avoid draining your

battery or damaging your starter.

2. If it does not start within 10 seconds, push the

accelerator pedal all the way to the ﬂoor,

while you hold the ignition key in START.

When the engine starts, let go of the key and

let up on the accelerator pedal. Wait about

15 seconds between each try.

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