OEM 2004 Chevrolet Trailblazer Throttle Body

2004 Chevrolet Trailblazer Parts Questions & Experts Answers

• Q: How to replace the throttle body assembly on 2004 Chevrolet Trailblazer?

  A: The Throttle Body assembly can be replaced removing resonator assembly and then the evaporative emission (EVAP) canister purge line connection from the Throttle Body, and Throttle Body electrical connector. Next, remove the Throttle Body assembly retaining bolts, and Throttle Body assembly with gasket from the Intake Manifold, also making sure to clean the surface of the gasket. For installation one should install the Throttle Body assembly on the Intake Manifold with the gasket, the sealer should be used gm p/n 12346004 (Canadian P/N 10953480) to be used on throttle control module bolt thread. Install the Throttle Body assembly retaing bols, and tighten to 10 n.m (89lb in). Reconnect the Throttle Body electric connector, reconnect evap canister purge line with the Throttle Body, and lastly reinstall the resonator assembly.