Changing the crank sensor on your impala or anything with the 3800 series motor is pretty easy.
Things needed
1/4 by 28 bolts 3 in long with washers
harmonic balancer puller
24mm socket for pulley bolt
13mm socket to remove crank sensor
the whole trick is using those small bolts to hook up the pully to remove the harmonic balancer once thats removed its simple and easy to change.
with the p0336 code your car can have sudden stall outs,hard starts, and even the tach jumping around.
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