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If no coolant is visible in the enginecoolant recovery reservoir, addcoolant as follows:
1. Locate the radiator cap. SeeEngine Compartment Overview0274.
2. Cover the radiator cap with athick cloth and turn it slowlycounterclockwise and remove.
3. If there is no coolant visible orthe level is low, slowly fill thesystem through the radiatorcap opening with a 50/50 mixture of clean, drinkablewater and DEX-COOL coolantuntil full.
Wait 30 seconds for thecoolant to settle and top off ifthe level drops.
Do not spill coolant on theaccessory drive belts.
If a spill occurs, rinse the beltwith fresh water.
4. Start the engine.
5. With the engine idling, top offthe coolant through the radiatorcap opening until full.
Wait 30 seconds for thecoolant to settle and top off ifthe level drops.
6. Once the system is full, put theradiator cap back on by turningclockwise.
7. Turn the engine off.
8. Check the coolant level in theengine coolant recoveryreservoir and fill it until thelevel is at the top mark on thedipstick cap. Filling to this levelprovides additional coolant toallow for any air that may beleft in the cooling system.
Caution
If the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
The vehicle has an indicator to warnof engine overheating.
There is an engine coolanttemperature gauge on your vehicle'sinstrument panel. SeeEngineCoolant Temperature Gauge098.
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How to Check Lubricant
1. Fill Plug Hole
2. Drain Plug Hole
To g e t a n a c c u r a t e r e a d i n g , t h evehicle should be on a levelsurface.
If the level is below the bottom ofthe filler plug hole, add somelubricant. Add enough lubricant toraise the level to the bottom of thefiller plug hole.
What to Use
To a d d l u b r i c a n t w h e n t h e l e v e l i slow or to completely refill afterdraining, seeRecommended Fluidsand Lubricants0358.Thenfilltothe bottom of the fill plug hole withthe required lubricant.
Starter Switch Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, besure there is enough roomaround the vehicle.
2. Apply both the parking brakeand the regular brake.
Do not use the acceleratorpedal, and be ready to turn offthe engine immediately if itstarts.
3. Try to start the engine in eachgear. The vehicle should startonly in P (Park) or N (Neutral).If the vehicle starts in any otherposition, contact your dealer forservice.
Automatic Transmission
Shift Lock Control
Function Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, besure there is enough roomaround the vehicle. It should beparked on a level surface.
2. Apply the parking brake. Beready to apply the regularbrake immediately if the vehiclebegins to move.
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3. Install the new blade onto thearm connector and make surethe tabs are fully set in thelocked position.
Allowing the wiper blade arm totouch the windshield when nowiper blade is installed coulddamage the windshield. Anydamage that occurs would notbe covered by your warranty.Do not allow the wiper bladearm to touch the windshield.
4. Repeat the steps for the otherblade.
Windshield Replacement
HUD System
The windshield is part of the HUDsystem. If the windshield must bereplaced, get one that is designedfor HUD or the HUD image maylook out of focus.
Driver Assistance Systems
When a windshield replacement isneeded and the vehicle is equippedwith a front-looking camera sensorfor the Driver Assistance Systems,the windshield must be installedaccording to GM specifications forthese systems to work properly. If itis not, there may be unexpectedbehavior and/or messages fromthese systems. SeeObjectDetection System Messages011 6.
Headlamp Aiming
Headlamp aim has been preset andshould need no further adjustment.
If the vehicle is damaged in a crash,the headlamp aim may be affected.If adjustment to the headlamps isnecessary, see your dealer.
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Bulb Assembly
1. Bulb Socket
2. Bulb
3. Lamp Assembly
To r e p l a c e o n e o f t h e s e b u l b s :
1. Push the left end of the lampassembly toward the right.
2. Turn the lamp assembly downto remove it.
3. Turn the bulb socket (1)counterclockwise to remove itfrom the lamp assembly (3).
4. Pull the bulb (2) straight out ofthe bulb socket (1).
5. Push the replacement bulbstraight into the bulb socketand turn the bulb socketclockwise to install it into thelamp assembly.
6. Turn the lamp assembly intothe lamp assembly openingengaging the clip side first.
7. Push on the lamp side oppositethe clip until the lamp assemblysnaps into place.
Replacement Bulbs
Exterior LampBulbNumber
LicensePlate LampW5W
For replacement bulbs not listedhere, contact your dealer.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuitbreakers to protect against anelectrical system overload.
When the current electrical load istoo heavy, the circuit breaker opensand closes, protecting the circuituntil the current load returns tonormal or the problem is fixed. Thisgreatly reduces the chance of circuitoverload and fire caused byelectrical problems.
Fuses and circuit breakers protectpower devices in the vehicle.
Replace a bad fuse with a new oneof the identical size and rating.
If there is a problem on the road andafuseneedstobereplaced,thesame amperage fuse can beborrowed. Choose some feature ofthe vehicle that is not needed to useand replace it as soon as possible.
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Headlamp Wiring
An electrical overload may causethe lamps to go on and off, or insome cases to remain off. Have theheadlamp wiring checked right awayif the lamps go on and off orremain off.
Windshield Wipers
If the wiper motor overheats due toheavy snow or ice, the windshieldwipers will stop until the motor coolsand will then restart.
Although the circuit is protectedfrom electrical overload, overloaddue to heavy snow or ice maycause wiper linkage damage.Always clear ice and heavy snowfrom the windshield before using thewindshield wipers.
If the overload is caused by anelectrical problem and not snow orice, be sure to get it fixed.
Fuses
The wiring circuits in the vehicle areprotected from short circuits byfuses. This greatly reduces thechance of fires caused by electricalproblems.
Look at the silver-colored bandinside the fuse. If the band is brokenor melted, replace the fuse. Be sureyou replace a bad fuse with a newone of the identical size and rating.
Fuses of the same amperage canbe temporarily borrowed fromanother fuse location, if a fuse goesout. Replace the fuse as soon asyou can.
Spare fuses of various ratings areprovided in the EngineCompartment Fuse Block and RearCompartment Fuse Block.
Engine Compartment
Fuse Block
To a c c e s s t h e f u s e b l o c k , r e m o v ethe clip-on cover.
Ensure the cover is replacedsecurely.
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FusesUsage
F22 Rear wiper
F23 Sunroof
F24 Front wipers
F25 Automatic occupantsensing/Instrumentcluster/Ignition
F26 Left rear bus electricalcenter/Ignition
F27–
F28 Ignition/Injectors even–V8
F29 Engine control module–V8/Ignition odd–V6/Emissions
F30–
F31–
F32–
F33 Ignition/Instrumentpanel body
F34 Fuel system controlmodule/Ignition
F35–
FusesUsage
F36 Electric steeringcolumn lock
F37 Emission 2/Ignitioneven–V6
F38 Engine control module–V6/Injectors/Ignitionodd–V8
F39 Intercooler pump
F40–
F41 Transmission controlmodule/Electric powersteering
F42 Starter motor
F43–
F44 Left HID headlamp
F45 Right HID headlamp
F46 High-beamheadlamps
F47 Horn
F48 Engine cooling fan
F49 Automatic headlampleveling
FusesUsage
F50 Transmission controlmodule ignition
F51 Engine control moduleignition
F52 Brake vacuum pump
F53 A/C clutch
F54 Vaporizer controlmodule
RelaysUsage
R1 Driving lamps
R2 Headlamp washer
R3 Rear washer pump
R4 Front washer pump
R5 Rear defogger
R6 Front wiper control
R7 Wiper speed
R8 Engine control module
R9–
R10 Intercooler pump
R11–
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RelaysUsage
R12 Rear wiper control
R13 Fog lamps
R14 Low-beam headlamps
R15 High-beamheadlamps
R16 Starter
R17 Run/Crank
R18 Brake vacuum pump
R19 A/C control
R20 Horn
Relays R3, R4, R12, R13, and R20are PCB mounted relays.
Instrument Panel Fuse
Block
Removing the Fuse Panel Cover
Insert a screwdriver in the slotindicated and remove the fuse panelcover.
Refitting the Fuse Panel Cover
1. Insert the rear edge of the fusepanel cover under thedoor seal.
2. Put the hooks on the cover intothe end of the instrumentpanel.
3. Rotate and push the coverback into position.
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The vehicle may not be equippedwith all of the fuses, relays andfeatures shown.
Fuses Usage
F1 Body control module 1
Fuses Usage
F2 Diagnostic linkconnector
F3 LPG shut-off solenoid
F4 Body control module 2
F5 Ignition switch
F6 Electric steeringcontrol lock
CB7–
F8–
F9–
F10–
F11 Shunt 1
F12 Airbag/Automaticoccupant sensing
F13 Instrument cluster
F14 HVAC control module
F15 Rain sensor
F16 Body control module 3
F17 LPG shut-off solenoid
F18–