A friend of mine just told me that he found the computer for a 1996 3500 under the driver's seat and was able to replace it. Go figure! Good luck, hope this is the answer and .
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Remove the spark plug wires from your 1997 Chevy Express 5.7 liter engine spark plugs. Remove the spark plugs with a 5/8 deep well socket, by turning the socket to the left. Reverse the process to install the new spark plugs.
in the gas tank
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The computer on the 1997 Chevy Venture is located inside the engine air filter. The computer is surrounded by a semi-clear white plastic coolant reservoir.
It is located in the catalytic converter
Get a mechanic to help you out. He will know how to change it.
mine gets 10. 97 2500 express