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A

Anonymous

Dec 16, 2024

2010 Chevy Impala lt 3.5 flexfuel?

Is the 2010 Chevy Impala LT 3.5 FlexFuel an interference engine or a non-interference engine? I'm concerned that the timing chain may have stretched, as the vehicle has 153,000 miles on it. Any insights would be appreciated.

2 Answers

A
Anonymous

Feb 21, 2025

If it is actually out of time, it would be pinging on regular gas because the timing would be advanced too far to run on 87 octane

If that’s not happening, i would ignore the code

And it’s a non interference design

A
Anonymous

Feb 20, 2025

Timing chains on GM 6 cylinder motors have never had a stretch problem. If you’re having running problems with your motor start with reading all the engine data with a $3000 scan tool to make sure all the sensors are working with in spec.

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