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1993 GMC C3500 Sierra SLE 7.4L MIL Lamp on
This veh has a check eng light on. Genysis idicates code 43 knock sensor failure. I have checked resistance in all the associated wiring. The scan tool indicates no for knock present while running and yes when I tap on block so It seems to be working yet the l...
FIX posted 9/27/2007
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Message Closed w/FIX
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Related Documents & Media | VIN | 2GTHC39N3P |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI |
| Emissions | US Fed |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 43 | Knock sensor Failure |
Message Closed w/FIX
Vehicle Data
1993 GMC C3500 Sierra SLE
| VIN | 2GTHC39N3P |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI |
| Emissions | US Fed |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 43 | Knock sensor Failure |
Video