Car Troubleshooting & Diagnosing Car Problems | ACDelco

Troubleshooting Checklist
What is your vehicle doing?
 Noise
 Visual
 Leaking Fluid
 Handling
If so, please describe
 Black
fluid color:
 Yellow/Green/Pink/Orange
Where does it come from?
Inside Car
 Left
 Front
 Seat
 Roof
 Trunk
Outside Car
 Left
 Rear
 Under hood




Center
Rear
Door
Floor




 Right
 Under car (front)
When does it happen?
 When car is not moving and engine is
stopped
 When car is moving and mostly:
 During braking
when using:
Brakes
Steering Wheel
Starter
Radio / Power Antenna
When the engine is:
 Idling
 Hot
 Cold
 Being Started
 Warming Up
How often does it happen?
 Always
Performance
Odor
Brown
Reddish
Right
Instrument Panel
Window
Rear Fender
 Front
 Under car (rear)
 During change from
acceleration to coasting
 When turning
 On rough roads
 When decelerating (coasting)
 When shifting from forward to reverse
 At _____ mph
 When accelerating (increasing load)
Mostly













Heater / Air Conditioner
Steering Wheel
Clutch
Windshield Wiper/Washer
Other: _________________________
Does it vary with:
 Car Speed
 Engine Speed
 Trunk Load
 Engine Load (acceleration)
 Comes and goes
 After ____ miles
Give this Troubleshooting Checklist to your counterperson, service advisor, or service
technician when you take your vehicle in for service.