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2008 Cadillac XLR CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Cadillac REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- Brake Service
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

BRAKE SERVICE PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
Disc Brakes -> PBR Single Piston Rear Disc Brake -> Brake System Bleed -> Bleed Sequence -> Manual -> Pressure
Vehicle: 2008 Cadillac XLR V 4.4 V8 GAS
Brake fluid is corrosive to painted surfaces. Care must be taken not to allow brake fluid to come in contact with painted surfaces on vehicle.
When bleeding the brake system, always bleed righthand rear wheel circuit first, followed by the lefthand front, lefthand rear and, finally, righthand front.
Manual
Pressure bleeding is recommended for all hydraulic systems. However, if a pressure bleeder is unavailable, use the following procedure. Brake fluid damages painted surfaces. Immediately clean any spilled fluid.
- Remove vacuum reserve by pumping brakes several times with engine o...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
CV AXLE SHAFT, Replace -> Rear
Vehicle: 2008 Cadillac XLR V 4.4 V8 GAS
Rear
- Raise and suitably support the vehicle.
- Remove tire and wheel assembly.
- Insert a drift or punch into brake rotor cooling fins and against brake caliper to prevent wheel hub and bearing from turning. Remove spindle nut retaining rear wheel drive shaft to hub.
- Remove spindle nut retaining rear wheel drive shaft to hub.
- Remove drift or punch.
- Separate outer tie rod end from knuckle and reposition tie rod toward rear of vehicle.
- Disconnect wheel speed sensor electrical connector.
- Remove parking brake cable from bracket.
- Disconnect parking brake cable from parking brake lever and...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
Relearn Procedures -> Keyless Entry Transmitter Or DIC Method -> Scan Tool Method
Vehicle: 2008 Cadillac XLR Platinum 4.6 V8 GAS
Keyless Entry Transmitter Or DIC Method
- On models with standard ignition switch, place the ignition switch in the On position.
- On models with keyless ignition switch, place the ignition switch in the Accy position.
- On all models, using the keyless entry transmitters press the lock and unlock buttons at the same time until a horn chirp sounds indicating the learn mode has been actuated. The left front turn signal will also be illuminated.
- Using the DIC (Driver Information Center) press and release the Info button until the Tire Learn message is indicated on the DIC display. Depres...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
Alternator, Replace
Vehicle: 2008 Cadillac XLR Platinum 4.6 V8 GAS
- Disconnect battery ground cable.
- Rotate or lift belt tensioner arm, using a suitable tool to relieve tension from drive belt.
- Remove drive belt.
- Raise and support vehicle.
- Drain cooling system into a suitable container.
- Remove front tire and wheel assemblies.
- Loosen, but do not remove, outer tie rod end stud nut from outer tie rod end ball stud.
- Loosen outer tie rod end stud to steering knuckle connection using suitable tie rod remover tool.
- Remove outer tie rod end stud nut and separate tie rod from steering knuckle.
- Loosen jam nut on inner tie rod assembly, then remove outer tie ro...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
Cabin Air Filter Service -> General Motors Corp./Saturn -> 2004-09 XLR & 2005-09 Corvette
Vehicle: 2008 Cadillac XLR Platinum 4.6 V8 GAS
On 2004-07 models, under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.
On 2008-09 XLR models, under normal operating conditions the cabin air filter should be replaced every 25,000 miles. In dusty areas change the cabin air filter more often.
On 2008-09 Corvette models, under normal operating conditions the cabin air filter should be replaced every 12 months or 15,000 miles or at Maintenance II as indicated on the DIC (Driver Information Center). In dusty a...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
General Motors Corp./Saturn Cars -> Traction Control System (TCS) Warning Lamp ->
Vehicle: 2008 Cadillac XLR V 4.4 V8 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned on as a bulb check. If the warni...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 2008 Cadillac XLR 4.6 V8 GAS
Inlet
- Drain cooling system into a suitable container.
- Remove battery.
- Reposition heater hose inlet clamp at heater pipe using hose clamp pliers J 38185 or equivalent.
- Remove heater inlet hose from heater pipe.
- Disconnect heater inlet hose from underhood junction box retainer clip.
- Reposition heater core inlet hose clamp at water pump using hose clamp pliers J 38185 or equivalent.
- Remove hose from vehicle.
- Reverse procedure to install.
Outlet
- Drain cooling system into a suitable container.
- Remove batte...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2008 Cadillac XLR AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2008 Cadillac XLR 4.6 V8 GAS
- Install a 1/2 inch drive breaker bar into belt drive tensioner.
- Push down on breaker bar to release tension.
- Remove ...
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COMPONENT LOCATION DIAGRAMS FOR 2008 Cadillac XLR AUTOMOBILES
Component location diagrams for most 2008 Cadillac XLR cars and light trucks sold in the U.S. from 1990+.
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![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2008 Cadillac XLR AUTOMOBILES
OEM drawn wiring diagrams for most 2008 Cadillac XLR cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2008 Cadillac XLR AUTOMOBILES
OEM TSB listings for most 2008 Cadillac XLR cars and light trucks sold in the U.S. from 1985+.
Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2008 Cadillac XLR 4.6 V8 GAS Auto Systems: |
Document: GM of Canada New Vehicle Limited Warranty Tire Program Vehicle: 2008 Cadillac XLR 4.6 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2008 Cadillac XLR AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2008 Cadillac XLR cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2008 Cadillac XLR cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2008 Cadillac XLR cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2008 Cadillac XLR cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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