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1996 GMC K1500 Sierra SL 5.7L Spark Knock
vehicle detonates under load only at highway speeds. problem didn't exhist before tune up was done. tried another cap and rotor and replaced spark plugs again. problem still [...] test checks ok. knock tests ok. egr tests ok. fuel is not an issue. all oxygen s...
FIX posted 11/1/2001
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Message Closed w/FIX
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15 Replies Received
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Related Documents & Media | VIN | 2GTEK19R9T |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / CPI |
| Emissions | OBD-II Compliant |
| Symptoms | Spark Knock |
| Occurs | Under Load |
Message Closed w/FIX
Vehicle Data
1996 GMC K1500 Sierra SL
| VIN | 2GTEK19R9T |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / CPI |
| Emissions | OBD-II Compliant |
| Symptoms | Spark Knock |
| Occurs | Under Load |
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