i have a 2001 chevy impala with 143,000 miles is a police package.my question is on 2001 Chevrolet Impala

evrytime i run over a significant pot hole the car goes off and i have to put it on neutral to start it back on,i thought it was my ignition module connector that was loose as it was a little loose the screw that holds the wiring harness in place.i tighten it but still i got the same problem when i go over pot holes.stupid car gos off.please i would appreciate if anybody knows this problem and knows the fix.cuz this car does that to me on the highway too and thats dangerous.i dont want somebody to rear end my car and possibly get kill or injured in an accident.thanks.

by in Bronx, NY on September 02, 2012
3 answers 1 comment
ANSWER by on September 02, 2012
start with battery connections and grounds. look at the fuel pump connector at the fuel tank as well. make sure the pcm connectors are good and tight Roy
COMMENT by on September 03, 2012
hi roy,i was gonna ask you the pcm is located under the air filter assebely? bcuz i thnk i saw a box with a wiring harness connected to it when i took my car to replace the raditor fans bcuz the mechanic took out the air filter assembely to change the raditor fans.if not could you tell me where is it located?thanks:)
ANSWER by on September 02, 2012
WIGGLE TEST WIRE HARNESS WITH ENG AT IDLE GRASP WIRE HARNESS PULL WIGGLE BACK AND FORTH SEE IF ENG RESPONDS. UNDER HOOD IS A GOOD PLACE TO START.
ANSWER by on September 02, 2012
BOTH ANS ARE RIGHT CK THE CABLES FOR BAD CONNECTION IF THERE GOOD TRY WIGGLING WIRE HARENESSES INDEPENDANTLY AND POSS FIND BAD WIRING