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Dave Nova
Dave Nova, Cadillac Technician
Category: Cadillac
Satisfied Customers: 1522
Experience:  ASE Master Certification. GM World Class Certification
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My engine light is on, my shop has gone from o2 sensor then

Customer Question

My engine light is on, my shop has gone from o2 sensor then said it is a purge valve thing now they say is is a brain computer that is on the engine and is very costly. Car is a o4caddy sex 6cy, runs great but can't get the light to stay off to get inspection. Please help
Submitted: 2 months ago.
Category: Cadillac
Expert:  Ron Z. replied 2 months ago.

Do you happen to have the current "p-codes" that are pointing to these items?

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