Question about Chevrolet Avalanche

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My avalanche starts but won't stay on have to keep pressing gas pedal once I let it go it turns off? What's wrong?

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You need to clean the throttle body.take the big hose off the throttle assmebly then with some throttle body cleaner and a tooth buush opend the throttle full and spray and brush the black off. then start the engine and let idle for 5 minuets in park then 3 minuets in drive . do not touch the gas peddel.

Posted on Apr 05, 2011

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