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2000 Saturn LS2 3.0L MIL Lamp on
Posted to GM Driveability on 7/13/2005 3 Replies

Both P1779/P1780 appear to deal with comm. between ECM and TCM on the CAN network. Cannot find problem with PNP sw. inputs to either ECM or TCM. Have perfect continuity between ECM and TCM on tan and tan w/black wires(CAN network) No TCM codes, clear ECM code ...

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  Related Documents & Media  2000 Saturn LS2

 
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car Vehicle Data

2000 Saturn LS2

VIN 1G8JW52R7Y
Engine3.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P1780Shift Control System Malfunction
Message Closed

car Vehicle Data

2000 Saturn LS2

VIN 1G8JW52R7Y
Engine3.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P1780Shift Control System Malfunction