1997 chevy z71 transmission sensor

SOURCE: O2 sensor problem

I have a 97 gmc sierra .This truck is the same as the chevy ok.Its a 350 5.7 liter 4x4 Z71.I took it to auto zone which was my first mistake.They put it the scanner and said bad O2 sensor.Ok so which one is it i said.They dont know.Well there four (4) O2 sensors in this truck i hope you know that.I had to replace all four of them before i had to take it to a real shop.It seems the fuel pump i replaced a week earlier with an auto zone fuel pump was bad.Ive changed my feul pump 4 times now and have 235000 miles on still running.You need to get your fuel pressure checked.It should be 65 psi to start it and 55 psi to run it.If the pressures are good it could be a different O2 sensor or maybe the mass air flow senor.My last option would be the fuel pressure regulator because it seems to be a waste of time and money.I would get that fuel pressue checked first.Good luck.

SOURCE: knock sensor for a 2003 chevy Z71 5.3 L

These sensors are quiet a problem. They are located under the intake and normally go off because the engine got washed sometimes the water will evaperate and the problem goes away but anymays the intakes gota come off there are 2 of them so i would recomend replacing both while ur at it

Donnie Matney

• 426 Answers
• Posted on Jul 06, 2009

SOURCE: 1997 z71 Transmission removal

1. Disconnect the battery negative cable.
2. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Disconnect the range selector cable from the transmission bracket and from the transmission range select lever. Refer to Shift Cable Replacement .
4. Remove the rear propeller shaft. Refer to Rear Propeller Shaft in Propeller Shaft.
5. Support the transmission with a transmission jack.
6. Remove the transfer case if equipped. Refer to the appropriate Transfer Case Replacement in Transfer Case:
• Transfer Case Replacement (Selectable Four Wheel Drive) . • Transfer Case Replacement (Auto Four Wheel Drive ) . • Transfer Case Replacement (Manual Four Wheel Drive) .



7. Gasoline Engine--Remove the following components:
7.1. Two bolts 7.2. Two washers 7.3. One nut 7.4. The transmission to engine brace



8. Diesel Engine--Remove the following components:
8.1. Two bolts 8.2. Two washers 8.3. One nut 8.4. The transmission to engine brace
9. Remove the transmission rear mount.
10. Remove the frame crossmember.
11. Remove the exhaust pipe from the exhaust manifolds. Remove the muffler assembly from the exhaust pipe, if required. Refer to Exhaust System.




12. For the 5.0L Gasoline Engine: Remove the six bolts securing the converter cover to the transmission.
13. Remove the starter. Refer to Starter Replacement in Engine Electrical.
14. For the 4.3L Gasoline Engine: Remove the dust plug at the end of the starter mounting port in order to gain access to the converter bolts.




15. For the Diesel Engine and 7.4L/5.7L Engines: Remove the four bolts securing the converter cover to the transmission.
16. Mark the flywheel and the torque converter alignment.




17. Remove the bolts that attach the torque converter to the engine flywheel.




18. Remove the transmission vent hose.
19. Disconnect the wiring harness connectors from the vehicle speed sensors and from the park neutral position switch.
20. Remove all vehicle electrical harness wires, harness clips, tubes, and brackets that may interfere with the removal of the transmission.
21. Remove the fluid fill tube and the fill tube seal from the transmission. Refer to Filler Tube Replacement .
22. Plug the fluid fill tube opening in the transmission.
23. Disconnect the transmission oil cooler pipes from the transmission. Refer to the oil cooler pipe quick connect fittings removal procedure in Oil Cooler Hose/Pipe Replacement .
24. Plug the transmission oil cooler pipe connectors in the transmission case.
25. Install the J 21366 in order to keep the torque converter from sliding off of the transmission turbine shaft.
26. Support the engine with a suitable jack stand before removing the transmission from the engine.




27. 5.0L and 5.7L Gasoline Engine: Remove the studs and bolts securing the transmission to the engine.




28. 4.3L Gasoline Engine: Remove the studs and bolts securing the transmission to the engine.
29. Pull the transmission straight back from the engine.
30. Lower the transmission using the transmission jack.
31. Flush the transmission oil cooler and the pipes whenever you remove the transmission for overhaul, or replacement of the torque converter, the pump, or the transmission case. Refer to Transmission Fluid Cooler Flushing .
32. Clean the transmission case using a solvent dampened cloth. Do not allow solvent to enter the transmission.
33. Air dry the transmission.
34. Clean all hardware and the flywheel cover using solvent. Air dry all the parts.
35. Inspect all the components for wear and damage.
36. Inspect all the seals and the fittings for signs of wear.
37. Inspect the torque converter for stripped or broken weld nuts.
38. Inspect the transmission case for cracks.

SOURCE: transmission solenoid location on a 1999 chevy Z71

there's more than 1 and they are all inside the pan and in the valvebody be careful messing with this stuff it could become very costly very fast. good luck

SOURCE: can i install a 2001 z71 4l60e transmission into a

Only if you install the proper computer controls to go along with it, look to Summitracing.com for aftermarket transmission controls for intalling new model transmisions into classic cars...