2003 GMC Sierra 1500 Denali 6.0L Cranking Spark Knock
Hello, after a hot soak of approximately 15-30 minutes, there is spark knock during cranking only. I have checked the fuel pressure regulator(ok)and residual fuel pressure (ok). It does NOT run rough after starting; it only has spark knock during cranking afte...
Summary posted 4/23/2005
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Vehicle Data2003 GMC Sierra 1500 Denali
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Message Closed w/Summary
Vehicle Data
2003 GMC Sierra 1500 Denali
VIN | 2GTFK69U33 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / SEFI |
Emissions | OBD-II Compliant |
Symptoms | Cranking Spark Knock |
Misc. | Denali Awd |