I've done exactly that myself with the 2002 Grand Am with the infamous 3.4L V6 in it that I used to have. It's first UOA showed extra lead, which was from the bearings along with a significant amount of sodium and silicon. It didn't help with the fact that I was trying to see if my car would run a nice 7,500 mile interval with synthetic. It was obvious that it wasn't a good thing. The odd thing is that I never saw any decrease in the coolant level so I thought everything would be fine and the LIM gasket of the car was replaced at somewhere around 20k miles already, but this was 47,500 miles and the UOA indicated bad news. I immediately changed the coolant to a PG coolant and added a tube of the Bar's Leak powder as per BITOG recommendation for the time being and the oil was in there for 2,000 miles. During which I added LC per BITOG recommendation to try to neutralize or dissolve any sludge it could be creating(I went pretty heavy on this stuff when I started). I then ran a 15w40 HDEO with the LC and I sampled it at the end of the 2,000 mile run and the UOA that came back was a significant improvement with all of the wear values being in rough proportion to a normal PPM to mileage ratio except copper was in line with the universal averages. I wasn't too worried at this point and changed the oil out with a synthetic and then I considered selling it as the transmission was being odd the AC went out and I had enough of fixing the annoying problems(mostly electrical component issues) that the two Grand Ams in our family were coming up with or to spend money on the gasket that likes to fail every 25-75k miles with this engine.
I don't know if the PG-based coolant will help you whether it is sierra or prestone low-tox(the two cheap ones), it seemed to buy me some time. I ended up selling mine because of the general reliability posed by owning a Pontiac, which drove me away from owning domestic vehicles and brought me to owning vehicles mass produced vehicles that are also reliable that can bring me a significant amount of miles for a nice price that has easily obtainable junkyard parts.
Sorry, I'm ranting and I digress.
It should help you to add PG, you could try the GM coolant tabs or whatever equivalent you have from Dodge or a tube of Bars Leak powder. If you have LC use that because it might help. A UOA will be a great way to confirm or deny coolant. I would keep oil changes pretty short with either a cheap oil whether standard or HDEO.
This is just going by what others on this forum have told me along with my own experience.
