Question about 2002 Chevrolet Impala
With a scan tools look for data of transmission.
then look for A,B,C,D switch data and compare with chart
these valve are there to confirm oil pressure has been going to the right component.
see witch one of a b c d switch malfunction and have a test to wire from transmission to pcm
signal to pcm it's only a logic pattern on and off state
on is grounded
off is not grounded then if wire is ground then it send a message of malfunctionning switch or oil pressure inside transmission but do the outside diagnosis before
hope it helps
Posted on Oct 15, 2013
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Posted on Jan 02, 2017
crank shaft sen. is easy enough to change.its mounted near timing chain cover,cam sen.is somewhat harder,its in the distributor,id doubt that both are defect
Posted on Mar 10, 2009
there is a large evaporative leak. keep away form ottozoo, they dont have the brain power to actually diagnose a light bulb., their job is to sell parts., if they sell you the wrong parts tough.Take it to a qualified repair shop that does a lot of GM work or the dealer.
Posted on Sep 25, 2009
Diagram 9-5 on this page:
Posted on Nov 14, 2009
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