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1990 Chevrolet C1500 454 SS 7.4L No Speed controller
Perhaps someone has ran into a similar problem. This truck has intermittent speedometer function. Sometimes will work for 1 to 5 minutes after a cold start, sometimes won't. Alldata and Motor manuals show same circuit layout. This truck has the old TH400 trans...
Summary posted 11/11/2007
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Related Documents & Media | VIN | 1GCDC14N3L |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Fed |
| Symptoms | No Speed Controller |
| Occurs | Always |
| Misc. | 454 Ss |
Trouble Codes
| 24 | Vss signal |
Message Closed w/Summary
Vehicle Data
1990 Chevrolet C1500 454 SS
| VIN | 1GCDC14N3L |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Fed |
| Symptoms | No Speed Controller |
| Occurs | Always |
| Misc. | 454 Ss |
Trouble Codes
| 24 | Vss signal |
Video