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P1516 Diagnostic Trouble Code Discussion for February 2008

TAC Module Throttle Actuator Position Performance

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Trouble Ticket Help Requests for DTC P1516
Help Request Posted
2005 Chevrolet Silverado 1500 4.8L Poor Idle Quality, MIL Lamp on VIN: 1GCEC14VX5
P1516: TAC Module Throttle Actuator Position Performance. Well guys I think we screwed this one up. My tech decided to clean the throttle plates, had a helper hold pedal down with key on to open throttle plates, while he was cleaning the plates closed by themselves and got his finger stuck between the plate and t/bod...
February 15, 2008
2003 GMC Yukon Denali 6.0L Poor Idle Quality, Hesitation, Cuts out, MIL Lamp on VIN: 1GKEK66U33
P1516: TAC Module Throttle Actuator Position Performance. Thanks in advance, I have read most of the fix database archives and have checked the grounds (even the difficult to reach left rear head) checked the wiring (espicially the yellow), pin drag tests, scoped TPS's and 5v ref. and ground, even installed a temp. g...
February 28, 2008