CHEVROLET
2000–05 Impala
PRECAUTIONS
Warning: Batteries produce explo-
sive gases, contain corrosive acid, and
supply levels of electrical current high
enough to cause burns. Therefore, to re-
duce the risk of personal injury when
working near a battery: Always shield
your eyes and avoid leaning over the
battery whenever possible; do not ex-
pose the battery to open flames or
sparks; do not allow the battery electro-
lyte to contact the eyes or skin; flush im-
mediately and thoroughly any
contacted areas with water, and get
medical help.
Warning: Unless directed otherwise,
the ignition and start switch must be in
the OFF or LOCK position, and all elec-
trical loads must be OFF before servic-
ing any electrical component. Discon-
nect the battery ground cable to
prevent an electrical spark should a
tool or equipment come in contact with
an exposed electrical terminal. Failure
to follow these precautions may result
in personal injury and/or damage to the
vehicle or its components.
For vehicles equipped with OnStar®
(UE1) with Back Up Battery, the back up
battery is a redundant power supply to
allow limited OnStar® functionality in the
event of a main vehicle battery power dis-
ruption to the VCIM (OnStar® module).
Do not disconnect the main vehicle bat-
tery or remove the OnStar® fuse with the
ignition key in any position other than
OFF. Retained Accessory Power (RAP)
should be allowed to time out or be dis-
abled (simply opening the driver door
should disable RAP) before disconnecting
power. Disconnecting power to the
OnStar® module in any way while the
ignition is ON or with RAP activated may
cause activation of the OnStar® Back Up
Battery (BUB) system and will discharge
and permanently damage the BUB. Once
the BUB is activated, it will stay on until it
has completely discharged. The BUB is
not rechargeable and, once activated, the
BUB must be replaced.
BATTERY
Removal
Caution: When performing service on
or near the SIR components or the SIR
wiring, the SIR system must be dis-
abled. Failure to observe the correct
procedure could cause deployment of
the SIR components, personal injury, or
unrequired SIR system repairs.
1. Record radio anti-theft code and sta-
tion presets.
2. Turn off all lamps and accessories.
3. Turn ignition switch to OFF position.
4. Remove righthand front fender upper
diagonal brace, Fig. 1.
5. Disconnect battery ground cable from
battery, Fig. 2.
6. Disconnect battery positive cable from
battery.
7. Remove battery hold down retainer
bolt and retainer, Fig. 3.
8. Remove battery from battery tray. Do
not tip battery more than 40 degrees
during removal.
9. Remove battery insulator from battery,
Fig. 4.
Installation
Clean any existing oxidation from the
contact face of the battery terminal and bat-
tery cable using a wire brush before install-
ing the battery cable to the battery.
1. Install battery insulator to battery,
Fig. 4.
2. Install battery to battery tray. Do not tip
battery more than 40 degrees during
installation.
3. Install battery hold down retainer and
bolt, Fig. 3. Torque bolt to 13 ft. lbs.
4. Connect positive battery cable to bat-
tery, Fig. 2. Torque cable terminal bolt
to 11 ft. lbs.
5. Connect battery ground cable to bat-
tery, Fig. 2. Torque cable terminal bolt
to 11 ft. lbs.
6. Reset all preset and theft codes previ-
ously recorded to radio.
7. Align righthand front fender upper di-
agonal brace to radiator support and
inner fender, Fig. 1.
8. Install diagonal brace bolts to radiator
support, and torque to 18 ft. lbs.
9. Install diagonal brace bolts to inner
fender, and torque to 35 ft. lbs.
BTY1200000000461
Fig. 1 Front fender upper
diagonal brace removal
BTY1200000000462
Fig. 2 Battery cable removal
2000–05 IMPALA 1
