Dad just got home with his 2007 6.7 bone stock 2500 HD 6 speed manual with 300 miles on the clock. On the way back to town for dinner the electronic throttle control or the red lighting bolt came on followed by a c.e.l and there is a noticeable stumble on acceleration the only thing we did was kick the exhaust brake on coming down a big grade to town and it lit up shut the truck off when we got to dinner and the light was off but the c.e.l. light was still on and there was no code with the 3 clicks key trick. Any one have any answers??

 

why are you asking, nobody here has any thing to do with warranty

 

I am a need to know kind of guy and if there is something wrong I want too know what it is and why so I can be versed when I take it in to be fixed.

 

Some people have claimed to need to have the e-brake set to get the codes to read. Several things can turn ETC lamp on. Try getting the codes with the e-brake set and see what you get.

 

Was the cruise set when you turned the exhaust brake on? That could cause it too. Here.......

P062C-ETC LEVEL 2 MPH PERFORMANCE
For a complete wiring diagram Refer to Section 8W.

Theory of Operation
While in cruise control, this diagnostic verifies that vehicle speed stays within 5 mph (8 kmh) of cruise control setpoint. The diagnostic will abort if during this condition engine speed is decreasing by more than 13 rpm/sec. This is meant to detect a condition when the vehicle is travelling downhill as that could cause an increase in overall vehicle speed. This diagnostic will abort if the driver goes out of cruise mode by pressing the brake or accelerator pedal. Cruise will be disabled the rest of the drive cycle (until key off).

 

P061A-ETC LEVEL 2 TORQUE PERFORMANCE
For a complete wiring diagram Refer to Section 8W.

Theory of Operation
This algorithm monitors the control system to ensure that the fueling output is consistent based on the operating conditions. The ECM will light the ETC lamp immediately after the diagnostic runs and fails. During this time the customer may experience an engine derate or engine running rough. The ECM will turn off the ETC lamp once the diagnostic passes in one drive cycle.

and


P061C-ETC LEVEL 2 RPM PERFORMANCE
For a complete wiring diagram Refer to Section 8W.

Theory of Operation
This diagnostic is testing for an internal ECM failure. The ECM redundantly calculates engine speed based crankcase speed sensor. This calculation is done in a different part of the ECM than the primary calculation. It detects if the primary engine speed calculation is lower than the redundant calculation by more than a calibrated amount 675 rpm for a calibrated amount of time 2 sec. The ECM will light the ETC lamp when the diagnostic runs and fails. The light will remain on for the drive cycle or until both calculations agree for 2 seconds.

 

Thanks Vz no the cruise was not set but turns out it had something to do with the map sensor failing waiting on new map sensor.