GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 Bonneville 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Diagnostic Trouble Code (DTC) List

DTC

Diagnostic Procedure

Module

B0184

DTC B0184 or B0189

HVAC Control Module

B0189

DTC B0184 or B0189

HVAC Control Module

B1000

DTC B1000

HVAC Control Module

P0530

DTC P0530

PCM

P0645

DTC P0645

PCM

P1536

DTC P1536

PCM

P1540

DTC P1540

PCM