Operation CHARM
: Car repair manuals for everyone.
Home
>>
GMC Truck
>>
1992
>>
Syclone V6-262 4.3L Turbo
>>
Repair and Diagnosis
>>
A L L Diagnostic Trouble Codes ( DTC )
>>
Testing and Inspection
>>
Manufacturer Code Charts
>>
DTC 51
>>
Powertrain Controls - ECM/PCM
Powertrain Controls - ECM/PCM
Check that all pins are fully inserted in the socket and that the PROM is properly seated. If OK, clear Memory, and recheck. If Code 51 reappears, replace ECM.