Question about 2002 Pontiac Grand Am
My service vehicle soon light comes on and if i have my air, heat, or defrost on they will just turn off. If i wait a few minutes they will eventually kick back on but my service vehicle soon light is still on and then my crusie control light flickers on and off. If I'm using my cruise control, it'll stop working.
Take your car to Kragen or a parts store like it and have the system tested for codes, also ask them to test your charging system for low voltage, all this is free.
Posted on Oct 30, 2008
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The IPC detects a loss of class 2 communication with the BCM.
This year vehicle as with all newer vehicles have several control modules that control the engine , air bags , antilock brakes , anti-theft system ,Heating an air conditioning ,the instrument cluster an some others ! These modules are all connected on a class 2 serial data communication network so the modules can share information ! Your best bet is to take it to GM dealership or a ASE certified repair shop before you guess an just replace parts , that will cost you more in the long run !
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