Service Engine Soon Light On, P1680 (Reprogram or Replace PCM) Models: 2004 Buick Rainier 2004 Chevrolet Trailblazer 2004 GMC Envoy 2004 Oldsmobile Bravada with 4.2L Engine (VIN S - RPO LL8) Some customers may comment on the Service Engine Soon Light coming on. Upon investigation, the technician may find a P1680 diagnostic trouble code. Correction

P1680 This diagnostic applies to internal microprocessor integrity conditions within the powertrain control module (PCM). This diagnostic also addresses if the PCM is not programmed You need to have the vehicle scanned with "Updated" Tech 2 Scan Tool to verify P1680 & try a Reprogram of the PCM. It could mean you will need a new PCM.

the technician may find a P1680 diagnostic trouble code. CORRECTION. Check the resistance of the accelerator pedal position sensors using the procedure in the. appropriate Service Information for DTC P1680. If the resistance of the accelerator pedal position sensor is within the specifications shown in the

Related P1680 Content. 2003 Chevy Trailblazer Engine Code That Wont Clear. Enginge Code Says. Fan Speed ...

I have a 6/03 gmc envoy with a dtc p1680 i red that there is a tsb on this and a reprogram for this code, John A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

DTC P1680 Circuit Description. The throttle actuator control (TAC) system uses two accelerator pedal position (APP) sensors to monitor the pedal position. Two processors are also used to monitor the TAC system data. The Powertrain control module (PCM) performs an intrusive test in order to detect that the APP signals are not shorted together.

Upon investigation, the technician may find a P1680 diagnostic trouble code. Correction Check the resistance of the accelerator pedal position sensors, If the resistance of the accelerator pedal position sensor is within the specifications shown then reprogram the …

Customer: I am troubleshooting a p1680 APP sensor code on 04 buick rainier v6 2wd. Car goes to limp mode sometimes when pushing pedal to leave a stop sign . I have 5 volts at the proper pins of the disconnected accel pedal sensor connector.

Customer: Went into limp mode and got codes P0694, P060C, and P1680 Mechanic's Assistant: What have you tried so far? Are you fixing your vehicle yourself? Customer: Nothing. Im not a experienced mechanic. I can change oil and breaks but havent done much else.

Customer: code P1680 for 2004 gmc envoy xl. Answered by MikeD' in 9 mins 16 years ago. MikeD'