2002 Chevrolet Trailblazer LS 4.2L Engine
Hello all. I am working on an 02 trailblazer with a 4.2l I6. When you first start vehicle in morning or any time after vehicle sits for a while engine makes a knocking sound. seems to idle smooth and run fine. after it warms up or runs 3-5min noise goes comple...
FIX posted 6/12/2009
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Message Closed w/FIX
Vehicle Data2002 Chevrolet Trailblazer LS
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Message Closed w/FIX
Vehicle Data
2002 Chevrolet Trailblazer LS
VIN | 1GNDT13S42 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Affected | Engine |
Conditions | Knock When Cold |