Error 000025-0003 I cheng tha tuner bttle 2 sencer motor but still please help me

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you have to remove the power steering pump,
1- remove the belt
2- turn power steering pulley to see hidden bolt behind the pulley
3- you do not need to move the hoses
4- there is a 10mm bolt hold the sensor,
5- after removing the bolt just twist back and forth to loosen it and pull it out,disconnect the wiring harness.

these are the price at rockauto.com
TANDARD MOTOR PRODUCTS Part # PC254T T-Series
$22.99
STANDARD MOTOR PRODUCTS Part # PC254 {#12567650, 24507588}
$28.89
DELPHI Part # SS10044
$37.89
AIRTEX Part # 5S1239 {#12567650, 24507588, SU1368}
$38.79
ACDELCO Part # 213937 {#12567650}
SENSOR,CM/SHF POSN$43.79
TANDARD MOTOR PRODUCTS Part # PC254T T-Series
$22.99
STANDARD MOTOR PRODUCTS Part # PC254 {#12567650, 24507588}
$28.89
DELPHI Part # SS10044
$37.89
AIRTEX Part # 5S1239 {#12567650, 24507588, SU1368}
$38.79
ACDELCO Part # 213937 {#12567650}
SENSOR,CM/SHF POSN$43.79

The Cam Shaft Position is behind the motor on passenger side and has a green cap with 2 little wires going to it .with a 10 mm bolt to take out now what most people on here did not tell is that it was hard to take the green cap off the sencer first because the clip is on the bottom so you cant see it to take it off and if you just try to take a flat head screw driver to it you will bust your green clip.so take the sencer and cap off together and then take the green cap off after you get the sencer out .ok when you take the 10mm bolt out then you can reach down and pull the sencer out but its pretty hard just to pull out your going to want to twist it but you dont have to you are just pulling against the rubber O ring thats on the sencer just pull hard and it will come out.then pull the cap off .you acually push in on the clip towards the sencer to get it off ,not down ,but towards the bolt hole ,to take off,repalce clip put new sencer on and put sensor in motor,dont wiggle around on the wires to much because they are little and I could see braking one if not both

I have a 2001 Silverado 1500 with the 4.8 that had the same error codes. It turned out to be intake manifold gaskets were bad. With the engine running spray some carb cleaner on the intake where it bolts up to the heads and listen for the engine to speed up. If it does you've got a leak. With mine I couldn't find the leak with the carb cleaner but after I replaced the gaskets the problem was solved. Hope this helps.

Follow the hose from the radiator that goes to the engine block it will to the inlet manifold on that manifold u should find a two wire plug that is the coolant sensor. do not cofuse it with the temp sensor remember tha coolant sensor wires are alway two wired.

Ignition Coil or Crank Sensor

Check the ground from motor to frame and ground wire from battery to body. These sometimes become corroded and will give intermittent problems.

you cant use the cam gears on your "new motor' the cam gear from the old one must be used if it will fit.the starter problem could be a bad solonoid or a wireing problem cant tell by your desciption.

mass air flow sencer and idle sencer

2001 Buick LeSabre 3.8L V6 Check Engine Light come on after driving in 20 minutes,error code P0171.....O2 sensors and fuel filter changed ,how can I pinpoint the source.