Throttle Body Connector Terminal Tension

Some 2019 XT4 models equipped with the 2.0L 4-cylinder engine (RPO LSY) and 2019 Silverado 1500 and Sierra 1500 models equipped with the 2.7L 4-cylinder engine (RPO L3B) may have a Reduced Engine Power message displayed on the Driver Information Center and DTCs P2101 (Throttle Actuator Position Performance) and/or P1516 (Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance) set as current or history in the Engine Control Module (ECM). These conditions may be caused by a possible throttle body internal gel contamination issue.

Review the appropriate Service Information diagnostics for the set DTCs.

 

Vehicles Built Before February 2019

If the diagnosis leads to ECM replacement and the vehicle was built prior to February 2019, do not replace the ECM.

First, inspect the terminal tension at the ECM and throttle body. (Fig. 19, #3) Verify there are no wiring-related issues present between the ECM and throttle body.

If there are not any wiring- or terminal-related issues found, replace the throttle body assembly and re-evaluate the condition.

 

Fig. 19

 

Vehicles Built After February 2019

If the diagnosis leads to ECM replacement and the vehicle was built after February 2019, complete the ECM replacement procedure following the appropriate Service Information and re-evaluate the condition.

Refer to #PIP5660 for additional information.

 

– Thanks to Robert Halas

 

 

Installing the Rearview Camera Kit
6.6L V8 Gasoline Engine Exchange

Leave a Reply

Your email address will not be published. Required fields are marked *

*