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1995 GMC C2500 Sierra SL 5.7L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on
THIS TRUCK CAME WITH A MAP SENSOR DTC 33 SET HARD. THE MIN. YOU CLEAR IT COMES BACK. WITH A DVOM THE RETURN SIGNAL WILL READ 2.70 VDC AND THE SCANTOOL (MASTERTECH) WILL READ 4.63 VDC. THIS IS WITH KOER. HOW ON KOEO BOTH DVOM AND SCANTOOL WILL READ 5.10 VDC. IF...
FIX posted 4/17/2001
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| VIN | 1GBGC24K0S |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI INJECTION |
| Emissions | Not OBD-II Compliant |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
| Misc. | 5.7L Tbi |
Trouble Codes
| 33 | map sensor circuit always high |
Message Closed w/FIX
Vehicle Data
1995 GMC C2500 Sierra SL
| VIN | 1GBGC24K0S |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI INJECTION |
| Emissions | Not OBD-II Compliant |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
| Misc. | 5.7L Tbi |
Trouble Codes
| 33 | map sensor circuit always high |
Video