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2003 GMC Sierra 1500 5.3L Reduced Power
Replaced throttle-body and connector due to reduced power situation. Attempted to program pcm for any and all software updates using mdi and laptop. Midway through programming, error message E4491. Now cant comm with pcm. Verified good battery. Had jump pack h...
FIX posted 11/15/2014
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Message Closed w/FIX
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9 Replies Received
9 Replies Received
Related Documents & Media | VIN | [No VIN Available] |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Reduced Power |
Message Closed w/FIX
Vehicle Data
2003 GMC Sierra 1500
| VIN | [No VIN Available] |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Reduced Power |
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