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if you take the car to autozone, they should be able to check it for you with a scanner. if not, then you should take it to a Pontiac or any GM dealership.

i had the codes checked in my 97 grand am gt 2.4 and they told me it was one or all of the following.

1. oxygen sensor (o2) defective

a. poor connection @ the o2 sensor

b. check circuit-fuse

2. knock sensor

a. defective

b. check connector and wiring sensor

c. engine mechanical condition- knock or rattle in engine

d. low fuel- pressure

3. coolant temp always low

a. check coolant level

b. thermostat defective

c. ect (engine coolant temprature) sensor defective

4. evap (evaporation emission system) small leak no/ flow condition

a. defective or loose fuel cap

b. evap canister or hose cracked-not connected

c. purge or vent solenoid defective

d. vacuum leak at engine

hope this helps you out

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Q: Reasons for check engine light on a 1997 gran am gt?
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