Question about 2000 Pontiac Grand Prix

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Changed thermostat, grand prix gt, check engine light still on?!?

I have a 2000 Pontiac Grand Prix GT, great car, no major problems. Went to get my registeration smog check and failed due to "Coolant temperature below thermostat rating". So I figured start with the cheapest option first, changed the thermostat. No my SERVICE ENGINE SOON light is still on. What else could it be?

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Check evap vent solenoid alot stick on these cars.

Posted on Jan 13, 2009

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