Question about 2002 Oldsmobile Alero
I'm not a mechanic but I've had this problem with a dodge truck and a Saturn. I bought a new gas cap and the problem stopped. It takes awhile after you install the new cap for the emmission control system to clear. Something about air gas mix. I don't know about the Trac problem.
Posted on Oct 04, 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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