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1985 Chevrolet C20 Suburban Custom 5.7L Pre Ignition Ping
When driving around 55 mph or under a pull at this speed the truck gets an ign. ping. You can feather this ping in ang out with the accelerator. The dealer has been tring to solve this problem since [...] is the original owner. [Note if you unplug the pcv valv...
FIX posted 4/23/2001
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1C8GC26M2F |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | CARB / 4 BBL QUADRAJET |
| Emissions | US FED EMISSIONS |
| Symptoms | Pre Ignition Ping |
| Occurs | Always, Hot, Under Load, Cruise |
Message Closed w/FIX
Vehicle Data
1985 Chevrolet C20 Suburban Custom
| VIN | 1C8GC26M2F |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | CARB / 4 BBL QUADRAJET |
| Emissions | US FED EMISSIONS |
| Symptoms | Pre Ignition Ping |
| Occurs | Always, Hot, Under Load, Cruise |
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