Engine Control Module (ECM Computer)
The PROM(s)/CALPACK must be transferred from the original module to the replacement module. Additional relearns (theft, crankshaft, idle, etc) may be required
Engine Control Module (ECM Computer)
This unit contains a PROM that must be transferred from the old unit to the new unit. Additional relearns (theft, crankshaft, idle, etc) may be required; with Powertrain Control Module
Powertrain Control Module (PCM)
The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required