About 6 quarts/5.5 liters.
7 quarts
250,000 is about average.
6 quarts 5w30
.040 inch
2012 Ram 1500 wheels will fit on a 2003 .
Timing chains normally last the life of the engine and are replaced when the engine is rebuilt.
There are sensors all over the engine, transmission, exhaust, axles, etc.
It depends on the year. from 2003 to about 2005 they used 5w30. After that they used 5w20.
They could be, but you are near the average lifespan.
NoNo
The 2003 Chevrolet Silverado-1500 has a V6 engine.
The 2003 GMC Sierra-1500 has a V6 engine.