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If your GMC Denali is shuddering and nearly stalling, it could be due to a few potential issues. Common causes include a dirty or failing fuel injector, a clogged air filter, or problems with the ignition system such as worn spark plugs or ignition coils. Additionally, issues with the transmission or engine mounts could also lead to shuddering. It's advisable to have a professional mechanic diagnose the issue to ensure proper repairs are made.

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AnswerBot

5mo ago

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