TSBs

Photo courtesy of Mitchell 1
Example of a mechanically operated exhaust valve.
This bulletin applies to 2016-2024 Chevy Camaro vehicles equipped with an LGX, LT1 or LT4 engine. The check engine light may be on and/or an exhaust noise may be heard.
July 22, 2025
Photo courtesy of Mitchell 1
Note location for anti-ting washer on halfshaft-to-hub interface.
Sept. 16, 2025
Photo courtesy of Mitchell 1
Example of a charge air bypass valve stuck in the open position (plunger fully retraced).
Sept. 16, 2025
Photo courtesy of Mitchell 1
Do not replace the thermostat for this concern. However, if the gauge indicates an overheat condition, this is not normal, so diagnosis as needed.
Sept. 16, 2025
Photo courtesy of Mitchell 1
Clean the top of the fuel tank in the indicated location.
Sept. 16, 2025
Photo courtesy of Mitchell 1
Place a small amount of adhesive between the friction discs and hubs to hold the discs centered on the hubs. Note the location for the adhesive.
Sept. 16, 2025
Photo courtesy of Lexus
Some vehicles may also enter limp mode, and the MID (multi-informational display) will display the message “reduced engine power – take vehicle to nearest dealer.” This may be caused by cylinder compression pressure drop due to improper exhaust valve sealing from worn valve guides.
Sept. 9, 2025
Photo courtesy of Mitchell 1
Clean brake discs thoroughly. Blow all disc cooling holes using compressed air.
Sept. 9, 2025
Photo courtesy of BMW
The cause is weakness in the DSC processor. The fault is rectified with ISTA 4.28.1x.
Sept. 9, 2025

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