SOURCE: 2002 Chevy Impala Sensor # 3
You didn't give the engine size, so I'll give what my manual shows.
The 3.4L engine----- 2nd one in from the left, in back of the engine.
The 3.8L engine------2nd one in from the left, in front of the engine.
SOURCE: 1969 chevy impala transmission wiring diagram
350 turbo? or 400 thd? makes a big difference i built tranny's for over 40 years
SOURCE: Location of transmission solenoid in a 2005 Chevy Impala
you have to remove side pan looking at 5 to 6 hour job.be sure buy new side pan gasket.also let the dealership parts department salesperson show you a diagram of shift valve location because more than one in the valve body.
SOURCE: Problem with the 2008 Chevrolet Impala 2008 chevy
I have 07 Impala same thing happened to me & as I type my friend is having to replace the wires to make a firm connection to the BTSI selinoid switch - only problem I've had is finding the wiring & connector from Auto parts store - Finally was able to find & friend is replacing. If you take to Chevy dealership The cost is upwards of $600.00 The parts cost $18.26 for 3 wires, medal things to attach 2 wires - yellow wire broken - gear shifter won't come out of park Purple wire the key won't come out of ignition. Have absolutely no idea what the other 2 wires do. Good luck
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