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2003 GMC Sierra 1500 HD SLE 6.0L Mechanical
Posted to GM Engine on 10/8/2020 16 Replies

need a little help!!!! i have misfire on #5 and #6 checked for spark has good spark. tried switching coil,plugs,wires and injectors with no change. both misfires are both same. checked compression it was at 150 psi. checked for busted valve spring both wer...

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  Related Documents & Media  2003 GMC Sierra 1500 HD SLE

 
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car Vehicle Data

2003 GMC Sierra 1500 HD SLE

VIN 1GTGK13U03
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
Message Closed w/FIX

car Vehicle Data

2003 GMC Sierra 1500 HD SLE

VIN 1GTGK13U03
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection