whats the difference
Senior Member
Joined: Jul 2004
Posts: 742
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From: Victorville, CA
Car: 85 Trans Am
Engine: 350 (CCC QJet)
Transmission: 700R4
Axle/Gears: 3.08 9 bolt
PCM - Pulse Code Modulation (But they might mean Powertrain Control Module)
ECM - Engine Control Modules
ECU - Engine Control Unit
ECM - Engine Control Modules
ECU - Engine Control Unit
Thread Starter
Junior Member
Joined: Apr 2005
Posts: 20
Likes: 0
From: Arlington Texas
yeah i know what they stand for, but is there any difference between them
the way i was thinking was
pcm controlled the powertrain(engine and transmission) and is used on newer electronically controlled transmissions like the 4l60-e
and the ecm just controlled just the engine, but not transmission for manual and non-electronically controlled autos(700r4 ect)
am i correct?
the way i was thinking was
pcm controlled the powertrain(engine and transmission) and is used on newer electronically controlled transmissions like the 4l60-e
and the ecm just controlled just the engine, but not transmission for manual and non-electronically controlled autos(700r4 ect)
am i correct?
Last edited by A_T_F_B; Jun 1, 2005 at 06:24 PM.
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