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1998 Chevrolet Express 1500 4.3L No Start, Stall
replaced vcm w/ used. would crank w/ spark but inj. pulse disappears w/ code p1631 (pass lock system fault security)decided i better reflash vcm. still had same results, even after reprogramming vtd in ign switch (code p1631 &no start)i replaced ign switch and...
FIX posted 5/26/2004
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Message Closed w/FIX
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Related Documents & Media | VIN | 1GCFG15W3W |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / csfi |
| Emissions | OBD-II Compliant |
| Symptoms | No Start, Stall |
| Occurs | Always |
Trouble Codes
| P1631 | TCM Internal - Clock Processor Performance |
Message Closed w/FIX
Vehicle Data
1998 Chevrolet Express 1500
| VIN | 1GCFG15W3W |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / csfi |
| Emissions | OBD-II Compliant |
| Symptoms | No Start, Stall |
| Occurs | Always |
Trouble Codes
| P1631 | TCM Internal - Clock Processor Performance |
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