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2011 Chevrolet Express 1500 LS 5.3L Spark knock
GM techs I could use your help. The van came in with complaint of noise under load. Vehicle was cold when I started testing and had no noise. At about 160 degrees I could get small spark knock while brake torquing. As it heated up it got a lot worse and I noti...
Summary posted 10/9/2014
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Related Documents & Media | VIN | 1GCSGAF40B |
| Engine | 5.3 L / 8 cyl / FLEX |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Spark Knock |
| Occurs | Hot |
Message Closed w/Summary
Vehicle Data
2011 Chevrolet Express 1500 LS
| VIN | 1GCSGAF40B |
| Engine | 5.3 L / 8 cyl / FLEX |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Spark Knock |
| Occurs | Hot |
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