Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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What are the codes???
We need to see if you have a throttle body failure or a pedal sensor failure.
Here is the printout. You don't think it could just be the sensor or a bad/dirty connection?
ok, according to the flow chart, it could either be the module or the motors on the throttle body. I will post the chart and take a look at the possibilities.
yes, it could be a bad connection but I doubt it with the common failures of both the throttle body and pedal sensor.
DTC P1516, P2101, P2119, or P2176 Diagnostic Instructions
DTC Descriptors DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance.DTC P2101: Throttle Actuator Position Performance.DTC P2119: Throttle Closed Position Performance.DTC P2176: Minimum Throttle Position Not Learned.Diagnostic Fault Information
Conditions for Setting the DTC P1516 The indicated throttle position does not match the predicted throttle position for greater than 0.5 s.P2101 The indicated throttle position does not match the predicted throttle position for greater than 0.3 s.P2119 The ECM determines that the throttle valve did not return to the rest position within 720 milliseconds.P2176 The difference between the predicted and the actual throttle position is greater than a calibrated amount for greater than 1.5 s.Action Taken When the DTC Sets P1516, P2101, and P2176
Conditions for Clearing the MIL/DTC
Circuit/System Verification Note: A low battery voltage or charging system condition may cause a DTC to set.
Circuit/System Testing Warning: Turn OFF the ignition before inserting fingers into the throttle bore. Unexpected movement of the throttle blade could cause personal injury.
Note: Disconnecting the throttle body harness connector causes additional DTCs to set.
I'm guessing the picture is the flow chart, unfortunately it did not come thru. I cannot view the image.
nope. Are you trying to send a jpeg? anyway, I'll try to follow the steps as soon as it quits raining here.
ok, a scan tool is the best way to check this. using a voltmeter is ok, just difficult to read the voltages especially when you need to read 2 at one time.
the most common failure is the throttle body. the problem is that if the throttle body fails it may or may not take out the module which is on the pedal assembly.
how much do the scan tools run?
some of the hand held scan tools that give data you need run about 150-200. a full blown scan tool is about 3-5 thousand
see if a parts store will rent you one.