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Pontiac Grand Prix Questions

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I have a new radiator 2016 mass air flow sensor has been replace the codes p0480 and p0102 are the codes engine light is still on I have been told that the automatic starter has damaged my ecm need to replace the engine computer
The steering wheel &ignition switch got ripped out. I put the steering wheel back on but the car won't stay cranked..why?
I have replaced the water pump but cannot find the location of the thermostat to replace it too.
After driving bout 20min my service engine soon light came on and my oil light what do I do?
I am trying to avoid a 500 charge to be safe?
I dealt with this problem last Spring, and took my car to a Pontiac Certified dealer service center to get the problem fixed. They replaced the blower motor and resistor. But now, the blower only works on setting five, and on settings 1-4 my Day Running Lights go out. There are days that my lights won't come on at all unless I turn them on manually. I really wish I knew what was going wrong. I've heard that it may have something to do with the ignition switch or the wires on the same. Any advice would be helpful, because I don't want to get robbed blind for another $600 to get this issue handled again. I'm hoping it's just blown fuses, but don't know exactly how to check those out. Please help, and accept my appreciation for your time and advice.
The 'low coolant' light comes on. When I get home and check the radiator it is almost empty. Also, there is an Oily liquid leaking underneath on the driver side. But the oil looks fine. There is also a leak of some sort underneather the passenger side right about where there radiator is located. Although, while the car is sitting on the street not being driven anywhere or turned on, the radiator stays about the same as if there has been nothing leaking while the car is parked. What is wrong with my car? I'm so frustrated with it.
It was perfectly fine till I had a leak from the pan..the man broke a screw from the pan..it was driving before this
Security light comming dashboard cranks but will not turn over
How much does exust baffle
Running. Loud when first. Starts
theres a short by my battery that if you wiggle car starts car loses all power then you wiggle the little blue box by battery and it starts till wire loosens again
want change gear, cannot get out of park. cannot get out of the park gear.
when I turn on blower at high heat level I don't get hot air.
Bought a new battery and still car wouldn't start even with a jump. The power windows won't work.the defrost only blows out cold air?
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