The alternator is the adjustment point. Loosen the bolts holding the alternator to the engine and slide the alternator in towards the engine. This will allow you to remove the fan belt. However, if you also have Power Steering, the power steering belt may have to be removed before the alternator belt can be completely removed. Loosen the bolts holding the power steering pump assembly to the engine and slide the pump towards the engine to remove both belts.
A 2003 Impala does not have a timing belt. It has a chain.
No , the 3.4 and 3.8 litre V6 engines in a 2003 Chevrolet Impala have a timing CHAIN
Replace the pump before the serpentine belt and rack and pinion are damaged.
On a 2001 Chevrolet Impala : Both the 3.4 and the 3.8 litre V6 engines have a timing CHAIN
On a 2006 Chevrolet Impala : The 3.5 and the 3.9 litre V6 engines , and the 5.3 litre V8 engine have a timing CHAIN
( No ) the 3.8 litre V6 engine in a 2004 Chevrolet Impala has a timing CHAIN
In a 2005 Chevrolet Impala : No , both the 3.4 and the 3.8 litre V6 engines have a timing CHAIN
The tensioner is usually the problem and/or not using a quality belt.
The 3.5 litre V6 engine in a 2009 Chevrolet Impala has a timing CHAIN
The 3.4 and 3.8 litre V6 engines in a 2000 Chevrolet Impala have a timing CHAIN
Belt dressing is the worse thing you could do. Remove the belt and clean all of the pulleys and install a new belt.
All Chevrolet Impala's have a chanin that requires no maintenance or replacement under normal conditions.