The belt itself is amazing and I have not used anything other than GatorBack belts since discovering how good they are are are they were amazing. This belt will fit a 2003 Chevy Tahoe with a 5.3 liter engine and a 105 amp alternator. If your truck has a 145 amp alternator like mine, you will need a Goodyear 4060930 Gatorback serpentine belt. You will also need the smaller Goodyear 4040377 Gatorback Poly V Belt for the A/C on these trucks.
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