BUICK
2002–07 Rendezvous
PRECAUTIONS
Warning: 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.
Warning: Batteries generate hydro-
gen gas, which is extremely flammable
and may explode violently if ignited by
a spark or a flame. Battery acid is
extremely corrosive and causes severe
personal injury if the acid comes into
contact with the skin, and blindness if
the acid comes into contact with the
eyes. In order to avoid severe personal
injury, use extreme caution when ser-
vicing the battery or battery-related
components.
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
1. Record all of customer radio station
presets.
2. Turn off all lamps and accessories.
3. Turn ignition OFF.
4. Remove battery ground cable and bolt
from battery, Fig. 1.
5. Release underhood accessory wiring
junction block cover retaining tabs (1),
Fig. 2.
6. Remove underhood accessory wiring
junction block cover (2), Fig. 2.
7. Disconnect battery positive cable.
8. Loosen underhood accessory wiring
junction block wiring harness retaining
bolts (1), Fig. 3.
9. Release four underhood accessory
wiring junction block retaining clips (2),
Fig. 3.
10. Lift underhood accessory wiring junc-
tion block (3) out of mounting bracket,
Fig. 3.
11. Disconnect electrical connectors.
12. Remove underhood accessory wiring
junction block (3), Fig. 3.
13. Remove bolt from front end sheet
metal diagonal brace at inner fender,
Fig. 4.
14. Remove bolts from front end sheet
metal diagonal brace at radiator sup-
port.
15. Remove front end sheet metal diago-
nal brace.
16. Remove battery hold down retainer
bolt and retainer, Fig. 5.
17. Remove battery.
18. Remove battery insulator from battery,
Fig. 6.
Installation
1. Install battery insulator on battery.
2. Install battery.
3. Install battery hold down retainer and
bolt. Torque bolt to 12 ft. lbs.
4. Position front end sheet metal diago-
nal brace to radiator support and to
inner fender.
5. Install bolts to front end sheet metal di-
agonal brace at radiator support.
Torque bolts to 89 inch lbs.
6. Install bolts to front end sheet metal di-
agonal brace at inner fender. Torque
bolts to 89 inch lbs.
7. Align electrical connectors to there
slots in underhood accessory wiring
junction block bracket.
8. Align underhood accessory wiring
junction block (3) onto electrical con-
nectors, Fig. 7.
9. Hand tighten harness retaining bolts
(1), Fig. 7.
10. Secure four underhood accessory wir-
ing junction block retaining clips (2),
Fig. 7.
11. Tighten underhood accessory wiring
junction block harness retaining bolts.
Torque bolts to 36 inch lbs.
12. Install battery positive cable to battery.
Torque bolt to 12 ft. lbs.
13. Connect battery ground cable. Torque
bolt to 12 ft. lbs.
14. Reset all customer radio station pre-
sets.
BTY1200000000033
Fig. 1 Battery ground cable
BTY1200000000034
Fig. 2 Underhood accessory
wiring junction block cover
BTY1200000000035
Fig. 3 Underhood accessory
wiring junction block wiring
harness retaining bolts
2002–07 RENDEZVOUS 1
