GM Service Manual Online
For 1990-2009 cars only

Symptoms for Cadillac Catera 2000

Important Preliminary Checks Before Starting

Before using this section, perform Powertrain On Board Diagnostic (OBD) System Check and verify all of the following conditions:

    • The engine control module (ECM) and the malfunction indicator lamp (MIL) are operating correctly.
    • There are no diagnostic trouble codes (DTCs) stored.
    • The scan tool data is within the normal operating range. Refer to Scan Tool Data List .
    • Verify the customer concern and locate the correct symptom. Inspect the items indicated under that symptom.
    • Several of the symptom procedures ask for a careful visual/physical check. This step is extremely important, and can lead to correcting a condition without further checks and can save valuable time.
    • If the intermittent condition exists as a start and then stall, inspect for any DTCs related to the theft deterrent system. Refer to Diagnostic System Check - Theft Deterrent in Theft Deterrent.
    • Verify the proper installation of any of the following non-original equipment accessories:
      • Lights
      • Cellular phone
      • Remote starter system
      • Non-factory installed alarm
  1. Use the following tables when diagnosing a symptom concern:
  2. •  Poor Fuel Fill Quality
    •  Hard Start
    •  Surges/Chuggles
    •  Lack of Power, Sluggishness, or Sponginess
    •  Detonation/Spark Knock
    •  Hesitation, Sag, Stumble
    •  Cuts Out, Misses
    •  Poor Fuel Economy
    •  Rough, Unstable, or Incorrect Idle and Stalling
    •  Excessive Exhaust Emissions or Odors
    •  Dieseling, Run-On
    •  Backfire
  3. If the condition can not be isolated using the appropriate table, refer to Intermittent Conditions for further diagnosis.