I have an 03 LS V8 currently in the shop for similar issues. Found the the throttle body gasket was leaking (using carb cleaner). Lean codes still ongoing. Having the intake gasket replaced today. I will follow up with the outcome.
I know this is probably a silly question, but how do I change my own light bulbs on my brake light? I have taken the to the dealership before only to waste an hour and get charged $20.00 (seems ridiculous).
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