The 2003 Chevrolet Impala radiator drain plug can be found on the right hand side of the radiator. The radiator drain plug will be at the bottom of the radiator.
.035 is spark plug gap 30 degrees is the dwell setting
The firing order is 1-2-3-4-5-6 Click the link to see a diagram of the coil pack connections.
The 2003 Chevrolet suburban spark plugs should be changed every 30,000 miles. The life of the spark plug is dependent upon the driving habits of the automobile driver.
To properly answer this question we would need more details. there are various things that could be happening, you could have a bad plug wire, a bad spark plug, or even a bad rotor button, it all depends on what the problem is.
the spark gap .060
1996 Chevrolet Impala SS 5.7L SFI OHV 8cylThe Spark Plug Gap.050 (In thousandths of an inch)
the plug gap for 3.1 is 60,
hoe do you put then spark plug cable in the right order on a impala
Copper: NGK 5858 (XR4); Iridium: NGK 7189 (XR41X).....
Give the spark plug boot a twist to free it from the spark plug then pull it off of the spark plug by the boot.
http://www.classiccarauto.com/impala/how_to/images/distributor.png
A 2009 Chevrolet Silverado with the 5.3 engine requires a .040" spark plug gap.
.060
Your spark plug gap info should be on a sticker in the engine compartment. On the front clip above the radiator. That's where it is on my 01 impala
.60
.060