Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Does your model have a factory or after market remote start installed at all?
Let me know,thanks Pete
O.k.,it is most likely the viper remote start trying to start the engine.Some of the after market remote starts will try and crank over the engine when the battery is reconnected.There are different ways to stop this.On some models you press and hold lock and unlock on the remote at the same time when the battery is connected to disable the starting that is occuring.On other models press and hold lock and start at the same time.You can try this to see if it then quits trying to start itself.If this does not work you will need to obtain the model number off of the viper remote start control unit installed so we can locate the instructions on how to turn off this feature.
As for the ac fan running all of the time this was a common fault on allot of GM model vehicles.The cause is the blower motor resistor/control module.It powers the blower motor to operate it and it shorts out internally keeping the fan motor running with the key off.You would have to replace this resistor/control module assembly ( usually located near the blower fan motor depending on the year and model of your vehicle) to resolve this issue here.If you can post the year and model of your vehicle I can let you know where this is located just let me know.
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