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2003 chevy trailblazer_lt
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425 Posts
Discussion Starter · #1 ·
i have an 03 trailblazer lt with 84000. the problem is there is a ticking sound coming from under the truck. the sound only appears when the truck is stopped in drive. if i switch to neutral the sound stops. the sound started about a week ago when i was at a drive-thru. and has gotten louder since then. almost unbearable if next to a wall and noticeable at stop lights. any ideas?

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Western Canada Chapter
2003
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6,411 Posts
Sounds like the fan clutch tic. But that should also happen in neutral then go away when it locks up when it needs to cool the truck down. :undecided Any temperature spikes or loss of power?
 
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