Hello everyone

I have a problem in my '00' GMC JIMMY. It was sitting for more than 6 months in my garage because of changing the oil pump and oil pan gasket. Finally, yesterday I finish everything but guess it wasn't my happy day because I got another problem which is water pump leak. I installed new one but it keeps leaking from passenger cooling passage I then I figure out the there is a small old piece of gasket so, I remove it with razor blade and I re-installed the new gasket but again the coolent leak after that I made new paper gasket but it was thin so I make it double and I apply this time RTV on both sides (engine and water pump) but unfortunately after I fill the car with coolant again it is leak.

Note: The coolant leak happen when I fill the radiator without even starting the vehicle.

Is there anyone have same problem before or is there any suggestions you have?


thank you