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1999 GMC Sierra 2500 SL 6.0L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 7/30/2012 6 Replies

Customer complaint low power transmission wont [...] drive low power low fuel pressure. Pressure at 45 psi. Replaced fuel pump pressure at 60 psi. Checked alternator voltage 12.5 volts low. Check at ECM the same. Check wiring ok. No shorts or grounds. Code P05...

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  Related Documents & Media  1999 GMC Sierra 2500 SL

 
Message Closed w/FIX

car Vehicle Data

1999 GMC Sierra 2500 SL

VIN 1GTGK29U8X
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P0563PCM Power Source Circuit Unexpected Voltage
Message Closed w/FIX

car Vehicle Data

1999 GMC Sierra 2500 SL

VIN 1GTGK29U8X
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P0563PCM Power Source Circuit Unexpected Voltage