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2001 Chevrolet Express 3500 5.7L Poor Idle Quality, Misfire, MIL Lamp on
Customer states the engine runs rough, lacks power, and check engine light is on. Scan for trouble codes. P0335, P1637, P1638. I scoped the CKP signal wire at the PCM. Had a square wave signal. Checked power and ground at CKP sensor. Checked out ok. Perform vo...
FIX posted 2/22/2010
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Related Documents & Media | VIN | 1GBHG31R61 |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0335 | Crankshaft Position Sensor 1 Circuit Malfunction (No Signal) |
| P1637 | TCM Internal - EEPROM Performance |
| P1638 | TCM Internal - CAN 1 RAM Performance |
Message Closed w/FIX
Vehicle Data
2001 Chevrolet Express 3500
| VIN | 1GBHG31R61 |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0335 | Crankshaft Position Sensor 1 Circuit Malfunction (No Signal) |
| P1637 | TCM Internal - EEPROM Performance |
| P1638 | TCM Internal - CAN 1 RAM Performance |
Video