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Thread: 1997 K1500 Fuel Tank Pressure Sensor?

  1. #16
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    Dave, have you confirmed 97 Model year vs 97 manufacturing year? Emissions label will provide all needed answers here... "Vehicle conforms to Federal (or Federal and California) emissions standards for 199X model year."

  2. #17
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    Quote Originally Posted by dave w View Post
    Maybe California Emissions for 1997? The vehicle owner lives in Oregon. Very common to find California emission vehicles in Oregon.

    dave w
    Dave I have a 1997 and I think it has a sensor. I just did a 0411 swap and I think the wires were in place. I was going to look over the weekend and never made it out to the truck. I will look tonight

  3. #18
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    I have worked on plenty of 1997 GM's and they have the vacuum sensing switch.
    I was thinking my 1997 S10 SS had a vacuum sensor. I kind of remember thinking it was odd for a 1997.


    I checked at lunch and my truck does have a FTP Sensor. Then I checked the Production Date 6/97. I will look for the correct documents for you.


    The dealership get the next model year usually starting in June/July. Most of the time when they come before July the vehicle has been redesigned. 1998 S10's had a few changes, but not like going from a GMT-800 to the GMT-900 models

    We got 2014 Silverado's in this year in June.

  4. #19
    Super Moderator dave w's Avatar
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    Quote Originally Posted by 1project2many View Post
    Dave, have you confirmed 97 Model year vs 97 manufacturing year? Emissions label will provide all needed answers here... "Vehicle conforms to Federal (or Federal and California) emissions standards for 199X model year."
    The vehicle emission lablel is not available. Earlier this summer, I helped with a diesel to gas conversion http://www.gearhead-efi.com/Fuel-Inj...7-Vortec-4L80E

    The donor vehicle was a 1997 Suburban. I sent the PCM to eaglemark to reflash, so maybe he can post the file he read from the PCM, so we can see what the original VIN was? Most everything needed to swap from diesel to gas was removed from the Suburban motor, PCM, and wiring harness. Some details, like the fuel tank pressure sensor were not important at the time the fuel tank from the Suburban was removed.

    The vehicle is up and running, no issues. The vehicle owner is not 100% satisfied because the fuel tank pressure sensor is not wired in. I've researched the Mitchells Manuals at my public library, but I could not find the wiring diagram I was looking for. I'm thinking the fuel tank pressure sensor is not directly wired to the PCM like 1998 and newer?

    dave w
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    Last edited by dave w; 09-30-2013 at 11:07 PM.

  5. #20
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    I will check the pin-out again, but I am 100% sure the FTP sensor was wire to the VCM on my truck and now to the 0411 PCM.

  6. #21
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    Here's the one that came out of donor ECM, before we changed it to 4l80E trans.
    Attached Files Attached Files

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  7. #22
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    This is how that app I was talking about will help. The FTP sensor signal wire goes to C2 (RED) terminal 25 per GM's engineering documents.

  8. #23
    Super Moderator dave w's Avatar
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    Quote Originally Posted by Caleditor View Post
    This is how that app I was talking about will help. The FTP sensor signal wire goes to C2 (RED) terminal 25 per GM's engineering documents.
    That's very interesting. I checked both the schematics that have been posted, and C2 ~ pin 25 is blank or not listed. What I'm thinking is, C2 ~ pin 25 did not have a wire when I got the harness.

    dave w

  9. #24
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    Quote Originally Posted by dave w View Post
    That's very interesting. I checked both the schematics that have been posted, and C2 ~ pin 25 is blank or not listed. What I'm thinking is, C2 ~ pin 25 did not have a wire when I got the harness.

    dave w
    At C2 pin 25, 1997 is a blank hole. 1998 has the fuel tank pressure wire.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

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