2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
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BRK HYD PWR DISC(JH6), BRK HYD PWR DISC(JH7) EXCEPT ACTIVE BRAKE CONTROL(JL4)
2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
BRK HYD PWR DISC(JH6), BRK HYD PWR DISC(JH7) EXCEPT ACTIVE BRAKE CONTROL(JL4)