GM Tech (Cam) | GM Grand Master Technician 2007. 14 years experience. 32,709 Satisfied Customers Code P1516 (throttle acuator control TAC) P1516. 04 Chevy Taho.

This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehicles. Please discard PIP4578. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

I have the following codes: P1518, P1516, P1220, P1120. I replaced the Throttle position sensor and the throttle module. Q&A: Understanding and Resolving P1120 and P1220 Codes for GMC and Chevrolet

Customer: p1516 code Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Customer: That is the code p1516 and yes I have reset it twice. engine goes to reduce power. 8.1 l in a workhorse frame motorhome Mechanic's Assistant: What is the model/year of your Chevy?

28 years gm dealership experience, just a few tests before gm world class status 262 Satisfied Customers 04 Sierra 2500 6.0 4X4 It falls into reduced power, Cleaned throttle body, No help.

Customer: P1516 & P2101 with "Reduced Power" displayed on the cluster. Module Expers advised the PCM is beyond repair so they sold me a reman for $500 but they can't tell me what burned the PCM. Module Expers advised the PCM is beyond repair so they sold me a reman for $500 but they can't tell me what burned the PCM.

I called my onstar and they gave me a C0240, P1516, P2108 and U0107 codes. Can you please Rick | 28 YEARS GM DEALERSHIP EXPERIENCE, JUST A FEW TESTS BEFORE GM WORLD CLASS STATUS

DTC P1516. Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance. Inspect the throttle body for the following conditions: A throttle blade that is NOT in the rest positionA throttle blade that is binding open or closedA throttle blade that is free to move open or closed WITHOUT spring pressure

Install the throttle body assembly (2) to the intake manifold with the gasket. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the throttle control module bolt threads. Install the throttle body assembly retaining bolts (1). Tighten Tighten the bolts to 10 N·m (89 lb in). Connect the throttle body electrical connector.

Gary | 15 years GM master tech 30,243 Satisfied Customers P1516 code, That is the code p1516 and yes I have reset it twice. engine goes to reduce power. 8.1 l in a workhorse