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Old 08-11-2018, 05:44 PM   #1
Dumblucky
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Default ECM or TCM which one is this?

[ATTACH]53867g35[/ATTACH]Hey I have a 2005 Saturn Vue 2.2 L automatic..
I had AutoZone read my codes also the speedometer doesn't work..
P0502
U0101


I'm wondering if this is the TCM or is it the ecu?
Is the ecu on the top part of the engine

The only other module I can locate is under the dash by the steering column

Im havent removed mine yet it looks very similar to this
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Old 08-11-2018, 05:48 PM   #2
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Default Re: ECM or TCM which one is this?

This module is on top of my engine I believe this would be the ECU is that correct?
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Old 08-12-2018, 01:55 AM   #3
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2003 L-Series 3.0L Sedan
Default Re: ECM or TCM which one is this?

The ecm sends speedo info to the instrument panel gauge. The vehicle speed sensor from the xmission sends signals to the ecm. Your ecm is on the engine with two connectors. P0502 points to the vehicle speed sensor.
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