2001 Pontiac Firebird Formula, AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC (1) Description
P0560  Voltage Out Of Range
P0562  Voltage Excessively Low
P0563  Voltage Excessively High
P0615  Starter Relay Output Driver Module Circuit Malfunction
P0620  Fault Detection Circuit Malfunction
P1637  Output Driver Module Malfunction
(1) Codes listed in this table are only for testing covered in this article. For complete DTC listing, see BODY CONTROL MODULES - CAMARO & FIREBIRD article in ACCESSORIES & EQUIPMENT.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.