Results 1 to 4 of 4

Thread: 03-07 truck use o2s ground by PCM correct?

  1. 01-05-2019 #1
    GrannySShifting
    GrannySShifting is offline
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
    1,207

    03-07 truck use o2s ground by PCM correct?

    Thats why you can use a 03-07 pcm in a 99-02 Fbody and they still work because on those the harness provides ground, but not the reverse?

    Have a 06 PCM in a 03 truck, and it seems like the heaters arent active - or may be just very lazy O2s?
    Factory Stock 97 SS M6 13.51 @ 104.3 mph
    Stock Longblock LS1 w/ 233/238 P.S.I. Cam
    10.81 @ 126.9 Full interior, six speed on 275 radials, a decade ago

    '99 TA trunk mounted 76mm 6 Liter
    9.0s in '09 @ 153 MPH

    Turbo 5.3 Volvo 740 Wagon
    32psi and still winding out 5th on the highway somewhere
    Reply With Quote Reply With Quote
  2. 01-12-2019 #2
    GrannySShifting
    GrannySShifting is offline
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
    1,207
    ????
    Factory Stock 97 SS M6 13.51 @ 104.3 mph
    Stock Longblock LS1 w/ 233/238 P.S.I. Cam
    10.81 @ 126.9 Full interior, six speed on 275 radials, a decade ago

    '99 TA trunk mounted 76mm 6 Liter
    9.0s in '09 @ 153 MPH

    Turbo 5.3 Volvo 740 Wagon
    32psi and still winding out 5th on the highway somewhere
    Reply With Quote Reply With Quote
  3. 01-12-2019 #3
    LSxpwrdZ
    LSxpwrdZ is offline
    Senior Tuner LSxpwrdZ's Avatar
    Join Date
    Dec 2008
    Location
    on the Dyno
    Posts
    1,825
    Yes heater ground circuit goes to the PCM and it PWM. We do not have access to those PWM tables with HPT. Heater is grounded in the main harness on the vehicles equipped with the P01 PCM.

    2003 truck should have been P59.
    James Short - [email protected]
    Located in Central Kentucky
    ShorTuning
    2020 Camaro 2SS | BTR 230 | GPI CNC Heads | MSD Intake | Rotofab | 2" LT's | Flex Fuel | 638rwhp / 540rwtq
    2002 Camaro | LSX 427 | CID LS7's | Twin GT5088's | Haltech Nexus R5 | RPM TH400
    Reply With Quote Reply With Quote
  4. 01-13-2019 #4
    GrannySShifting
    GrannySShifting is offline
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
    1,207
    Quote Originally Posted by LSxpwrdZ View Post
    Yes heater ground circuit goes to the PCM and it PWM. We do not have access to those PWM tables with HPT. Heater is grounded in the main harness on the vehicles equipped with the P01 PCM.

    2003 truck should have been P59.
    Any ideas why heater circuits dont seem to be coming on then?

    Also take a look at this thread if you could, your pretty well versed in the different OSs and may be one of the few people who might have an idea https://forum.hptuners.com/showthrea...nding-properly
    Factory Stock 97 SS M6 13.51 @ 104.3 mph
    Stock Longblock LS1 w/ 233/238 P.S.I. Cam
    10.81 @ 126.9 Full interior, six speed on 275 radials, a decade ago

    '99 TA trunk mounted 76mm 6 Liter
    9.0s in '09 @ 153 MPH

    Turbo 5.3 Volvo 740 Wagon
    32psi and still winding out 5th on the highway somewhere
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »