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2010 GMC Terrain slt 3.0L V6
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It started today and I know that because I check for the sound everytime I start my terrain. It wasn’t there yesterday but is today. Weird thing is , is that it’s not just on start up but I hear it while it’s idling as well is that normal ? Or am I in bigger trouble than I thought? The oil level is normal and I haven’t had to top it off since the last oil change.
 

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It's possible that you have a timing chain problem, how many miles on the vehicle?
Or it could be something else like an internal engine part or even the high pressure fuel pump.

In any case, getting it diagnosed and repaired is probably less expensive than a new motor.
Once you know what the problem is, you can decide on your options.
Or if you were thinking of a new vehicle, this is a good time to trade.
 
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