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Re: How to service EVAP system...
Replace the fuel tank cap.
On lots of occasions the cap not sealing properly will cause the code. This code will not cause bad fuel economy though.
You have to do a tuneup including:
New plugs
New Wires
Cap and rotor (If applicable)
Air Filter
PCV valve
Fuel Filter
MAF Sensor cleaning.
If over 100,000 miles you should replace your O2 sensors.
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1995 Factory Blazer Service Manual for sale, PM if interested.
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