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Optimum by General Motors. First-Rate Used Vehicles.
Available at select GM Dealers.
The Optimum Used Vehicle Inspection Process can be summed up in one word - meticulous.
Before any of our used vehicles are offered for sale, they're given a thorough 150-plus point inspection. Optimum Dealers make sure each vehicle is cosmetically and mechanically sound, completing any repairs and scheduled maintenance.
If you'd like to know exactly what we look at during our inspection process, read on.
A GM trained technician performs the following 150-plus point inspection on every Optimum Used Vehicle:
- Check vehicle mileage against service records for accuracy
- Engine Compartment
- Hood release, hinges, prop rod or gas struts provide
proper operation
- Check finish (rust, corrosion)
- Check factory instruction stickers
- Engine Condition
- Verify original equipment and displacement
- Valve covers and head gaskets in good condition
- Condition of engine belts, automatic belt tensioner,
hoses, and wires
- Condition of hose clamps, retainer clips, and wire
casings
- Look for areas of concentrated dirt or grime
- Engine Oil Level/Condition
- Check oil level, verify oil clarity and viscosity
- Engine Coolant Level/Condition
- Check radiator for leaks and damage/fan shroud is
securely in place
- Verify blades of cooling fans are not broken or
bent
- Check coolant level, freeze protection rating
- Air Filter Inspection
- Inspect air filter/filter housing for debris (leaves,
bugs)
- Battery Load Test
- Inspect battery for cracks. Clean and inspect battery
top, posts & cables
- Measure battery voltage/conduct load test
- Ignition System
- Inspect system for loose, cracked or burned wires.
Check wire for short circuits and arcing
- Power Steering Fluid Level
- Inspect power steering fluid level
- Brake Fluid Level
- Locate and inspect master cylinder reservoir, check
brake fluid level
- Automatic Transmission Fluid Level & Condition
- Check all ranges from "Park" to "1st"
for proper engagement
- Fluid level meets manufacturer's specified level,
clarity and viscosity
- Fuel System
- Inspect fuel injection system for proper operation
- Check fuel system for leaks or loose wires and lines
- Inspect evaporative emissions system for proper
operation
- Manual Transmission Fluid Level
- Measure fluid level, clarity and viscosity (if equipped)
- Manual Transmission Hydraulic Clutch Fluid Level
- Check clutch fluid reservoir for proper level
- Washer Fluid Level
- Inspect/fill washer fluid reservoir (front)/(rear,
if equipped)
- Starter Performance (Automatic Transmission)
- Check that starter only operates in "Park"
or "Neutral"
- Starter Performance (Manual Transmission)
- Starts only when Clutch pedal is pressed all the
way down (GM vehicles)
- Engine Running, Noise, Vibration & Hardness
- Check for fluid leaks or valvetrain noise
- Vacuum system condition
- Fuel delivery system
- Valve cover/cylinder head/exhaust manifold gasket soundness
- Radiator/heater hoses condition
- Power steering pump/hose condition
- No squeaking belts
- Instrumentation and Interior Component Inspection
- SRS system warning light/self test
- ABS system warning light/self test
- Instrument Panel
- Instrument panel/gauge lights and operation
- Electronic instrument cluster, Head-up Display operational
(if equipped)
- Climate Control
- HVAC/Front and Rear Electronic Climate Control (if
equipped)
- All climate control directional functions/vents
working properly
- Audio System
- Audio controls, speakers, steering wheel controls
(if equipped)
- Power antenna (if equipped)
- Windshield Wiper/Washer Operation
- Wiper/Washer Multifunction Switch
- Hi/Lo/Delay wiper arm speed
- Wiper arms cycle properly/Washer fluid spray operational
- Wiper blades
- Rear Windshield Wiper/Washer Operation
- Wiper arms cycle properly/Washer fluid spray operational
- Delay wipe feature operational (if equipped)
- Wiper blade
- Electric Rear Window Defroster Operation
- Defroster switch/heating grid operation
- Horn Operation
- Horn operation/sound quality
- Lighter/Powerpoint Outlets
- Cigarette lighter operational, auxiliary Powerpoints
operational
- Tilt Steering Wheel (if equipped)
- Steering wheel locks in each tilt position
- Inside Rearview Mirror
- Rearview mirror adjusts, range of movement, Auto
dim (if equipped)
- Map/Reading lights (if equipped)
- Window Regulators/Power Window/Motors/Vent Windows
- All power window switches operational (if equipped)
- Manual/power (if equipped) windows operate smoothly
- Window Regulators/Motors work correctly (if equipped)
- Sliding rear window/vent windows (if equipped)
- Outside Mirror Controls
- Check mirrors for full movement in all directions
- Check that mirrors have good clarity and no scratches
or cracks
- Heated Mirrors/Personal Memory systems function
(if equipped)
- Power Sunroof Operation (If Equipped)
- Sunroof opens, tilts and closes properly
- Check sunroof track for any obstructions or damage
- Check sunroof seals for any cracks or damage
- Removable Roof Panels (If Equipped)
- Roof panel latches
- Check roof panel weather stripping for cracks or
damage
- Convertible Top Operation (If Equipped)
- Headliner condition (if equipped)
- Check roof structure for bent rods or damage
- Top opens and closes fully
- Rear window, glass or plastic condition
- Convertible top seals and clamps
- Interior Trim Inspection
- Seat Fabric and Trim Condition
- Vehicle seats are free from wear, stains, or tears
- Passenger compartment trim panels fit and finish
- Headliner fit and condition
- Seat Adjustment
- Driver and Passenger seat tracks are operational
- Adjustable head restraints (if equipped)
- Folding rear seatback/Valet Lockout feature (if
equipped)
- Driver/passenger seat controls are operational
- Safety Belt Condition/Integral Child Seat Operation
- Driver/front passenger seat belt operation
- Front passenger's seat belt works correctly
- Rear seat belts operation
- Inspect safety belt webbing and buckles at all seating
positions
- Height adjustable shoulder belts work correctly
(if equipped)
- Check that integral child seat is operating properly
(if equipped)
- Inspect all child seat hardware and latches in working
order
- Sun Visor Operation and Condition
- Inspect the sun visors in their full range of movement
- Inspect material and retainer clips
- Vanity mirror condition/illumination (if equipped)
- Interior/Courtesy Light Operation
- Check that all interior lights/switches are operational
- Remote Decklid/Liftgate Release Operation
- Check operation of decklid/liftgate during remote
release
- Inspect weather seal for damage
- Decklid pull down feature (if equipped)
- Remote Fuel Filler Door Release Operation (If Equipped)
- Inspect operation of the remote fuel filler door
release feature
- Interior fuel door switch, release mechanism working
properly
- Ashtray
- Inspect ashtray for broken, bent or melted components
- Glove Box Operation
- Inspect latch, lock, and hinges for proper operation
- Door Trim and Lock Operation
- Check that all doors open and close smoothly
- Inspect operation manual or power door locks, rear
door security lock
- Check that doors cannot be opened in the "Locked"
position
- Check hand held remote transmitter operational (if
equipped)
- Check all interior/exterior door handles for damage
- Inspect fit and finish of each door trim panel,
armrest, and assist strap
- Carpet and Floor Mat Condition
- Inspect carpet and floor mats for burns, dirt, excessive
wear
- Cargo Area
- Inspect cargo area trim panels for fit and finish
- Cargo area, door lock switch operation, powerpoint
power (if equipped)
- Spare Tire Condition/Jack & Wrench Location
- Inspect spare tire and wheel condition
- Inspect that all tools needed for spare tire change
are intact
- Pre-Test Drive Inspection
- Head Lamp/Fog Lamp Operations
- Headlamp switch, High/Low beam is functional
- Headlamps are aimed properly
- Twilight/headlamp delay feature OK (if equipped)
- Fog lamps are aimed and functional (if equipped)
- Parking/Brake/Back Up/Turn & Side Marker Lamps
- Front and rear parking lamps
- Brake and backup lamps
- Left/Right turn signal lamps
- Hazard Warning Lights
- Hazard warning lights work with vehicle running/not
running
- Wheel and Tire Condition (Inspect Pre Test Drive and
In Service Bay)
- Wheel covers/wheel centre hubs OK (if equipped)
- Tire side walls, valve stems, and wear pattern (4/32"
Tread)
- Tire size/correct air pressure/lug nuts secured
- Inspect wheel rims for damage
- Shock Absorber Test
- Front shock absorbers/strut assembly
- Rear shock absorbers/strut assembly
- The Test Drive
- Brake Shift/Transmission Interlock (Automatic Transmission)
- Gear selector cannot be moved out of Park unless brake
is applied
- Transmission Operation (Automatic)
- Transmission gear engagement/shift points are smooth
- Transmission Operation (Manual)
- Clutch pedal/gear shift engagement
- No transmission noise
- Engine Performance
- Engine driveability/performance
- Engine NVH (noise, vibration, and hardness)
- Brake Operation
- Power assisted braking system is functional
- Anti-lock brake system warning/self-test light is
functional
- Anti-lock brake system functional (if equipped)
- Vehicle tracks straight under hard braking conditions
- Suspension/Drivetrain/Noise/Vibration/Hardness
- No abnormal vehicle noise, vibrations or harshness identified
- Cornering Ability
- Vehicle cornering dynamics
- Vehicle has no abnormal body roll
- Cruise Control (If Equipped)
- Cruise control holds at a set speed/adjustments work
properly
- Service Bay Inspection
- Transmission Case Inspection
- Transmission case/pan structurally sound
- Manual Transmission Fluid Level and Condition
- Fluid level, clarity and condition
- Transfer Case (4-Wheel Drive Models)
- Fluid level, clarity and condition
- Transfer case/skid plate structural condition
- Brake System Condition
- Brake rotor/drum surfaces
- Brake pads/shoes have 40% of usable material remaining
- Parking brake operation
- Engine Mounts/Front Suspension Links & Bushings
- Inspect all engine mounts, grommets and bushings
- Front suspension links/sway bar/mounts
- Struts and Shock Absorber Condition
- Shock absorbers/struts free of leaks and damage
- Steering System Condition
- Inspect structural condition of all steering system
elements
- CV Joint Dust Boot Condition
- CV dust cover boot void of rips/damage
- Drive Axle, Axle Fluid Levels
- Drive Axle meets Manufacturer specifications
- Inspect differential case for fluid leaks
- Front/Drive axle fluid level
- Fuel Tank System Condition
- Fuel tank and delivery lines are sound, no fuel odor
- Vehicle/Structural Damage
- Vehicle shows no signs of collision damage
- Exhaust System
- Exhaust system hung/routed properly, meets structural
integrity, exhaust tone
- Engine Oil and Filter Change, Chassis Lube
- Lubricate all chassis points, perform oil and filter
change
- Soak Test
- Soak test/no leakage found
- Appearance Inspection - Exterior Wear and Tear
- Window Glass
- Inspect all glass surfaces for chips and cracks
- Hood Condition
- Inspect hood for proper alignment with fenders,
grille, and fascia
- Inspect hood's finish for dents and scratches
- Grille, Front Bumper, and Fascia Condition
- Check that bumper guards and rubstrips are securely
fastened
- Check grille, front bumper, or fascia alignment/condition
- Vehicle is free from road tar and tree sap
- Driver Side Fender, Door(s), Quarter Panel Condition
- Inspect for panel alignment, finish quality, previous
body work
- Weather seals, placement/condition
- Bodyside mirrors, mouldings and badging properly
secured
- Decklid, Liftgate, Tailgate or Rear Cargo Door Condition
- Inspect the rear body panel surfaces for dings,
dents and scratches
- Decklid, liftgate or rear panel doors
- Weather seals, placement/condition
- Pickup Tailgate/Bed/Side Rails (if equipped)
- Bedliner OK
- Rear Bumper/Fascia Condition
- Inspect all rear trim components for proper fit,
no collision damage
- Check that all bumper guards and rubstrips are securely
fastened
- Passenger Side Fender, Door(s), Quarter Panel Condition
- Inspect areas for panel alignment, finish quality,
and previous body work
- Weather seals, placement/condition
- Bodyside mirrors, mouldings and badging properly
secured
- Radio Antenna
- Inspect mast antenna, Antenna base secured to body panel
- Final Inspections
- Engine compartment is clean/degreased
- Interior compartment has been cleaned/detailed
- Vehicle exterior has been washed/waxed/detailed
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