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Where is the ecm on 2002 grand am 4 cycle has Saturn engine ?

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P1780 means what on a 2002 saturn L300.... And how do you fix it


DTC P1780
Circuit Description
This DTC indicates that the engine control module (ECM) received a message from the transmission control module (TCM) to turn ON the MIL (SERVICE ENGINE SOON) telltale due to a transmission related OBD II failure. The ECM will send a message via the controller area network (CAN) link to the body control module (BCM), which will send a message over the class 2 link to the instrument panel (I/P) cluster to turn ON the MIL.
Conditions for Setting the DTC
DTC P1780 will set if the ECM received a MIL request message from the TCM over the CAN link.
DTC P1780 is a type B DTC.
Diagnostic Aids
DTC P1780 does not indicate a fault with the CAN link circuit.
DTC P1780 does not indicate a fault with the ECM.
Diagnose any TCM related DTCs first.


You need a scan tool that can read transmission control module codes .

Jun 22, 2018 | Saturn Cars & Trucks

1 Answer

I have a 2002 saturn and when i go thru puddles my engine keeps quitting on me.. the rpm's go from 2 to 3.5 while driving..please help me figure out why


water getting into the harness plugs and causing you problems or getting to the ECM plugs with the same result

Apr 17, 2017 | Saturn Cars & Trucks

1 Answer

Interchangeable 2.2L engine


Engine Swap question - 2.2 - SaturnFans.com Forums

www.saturnfans.com > ... > Models > Saturn L-Series > L-Series Tech

May 18, 2012 - 4 posts - ‎2 authors
Engine Swap question - 2.2 L-Series Tech. ... which engine i can use to swap into my 2000 LS1 Saturn (stick but i don't think this maters). Saturn L200 Ecotec interchangeable parts
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Jan 01, 2016 | Saturn Cars & Trucks

1 Answer

2006 Saturn vue, 4 cylinder. Ran out of gas, couple gallons put in, ran fine. Went to gas station filled up full. Driving home, noticed my reduced power indicator flashed a few times on then off. Once...


reduced power , electronic throttle control problem . Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.

May 04, 2017 | 2006 Saturn Vue

1 Answer

2002 dodge grand caravan 3.8 engine wont start


If you drove it to the dealer, the crankshaft sensor was not bad... Find another repair shop.

Aug 12, 2012 | 2002 Dodge Grand Caravan

1 Answer

2002 Saturn Vue Transmission problems.


that trans. is verry expensive. talk to saturn dealer, there is a special extended warranty on that trans.

Nov 30, 2008 | 2000 Jeep Grand Cherokee

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