Recent content by braveheartwallace

  1. braveheartwallace

    Hybrid transmission

    What year is your hybrid? They redesigned the connector on the wiring harness but not the actual pump for year model 2010 and later. I replaced it myself on my 2009 and it was all pretty uneventful. The new aux pump from GM Part Direct came with a new gasket and the adapter for the wiring...
  2. braveheartwallace

    (6.0L Vortec) Tahoe very unusual cold start

    Are you talking about the O ring on the oil pickup tube inside the pan or the O ring on the oil pressure sending unit? Edit: that was a dumb question on my part. It must be the oil pickup tube's o-ring.
  3. braveheartwallace

    (6.0L Vortec) Tahoe very unusual cold start

    Other codes were P0AC4 (hybrid aux transmission pump), P0BBD (hybrid battery pack voltage) and P0A80 (Replace hybrid battery pack). These three codes have been reported for the last 4-5 years and I've been ignoring them for the most part. Planning to replace aux pump soon, however it should be...
  4. braveheartwallace

    (6.0L Vortec) Tahoe very unusual cold start

    Wanted to post this here to get some of y’all’s thoughts on what may be going on. Also posted in Hybrid General discussion... This morning where I am in New Mexico it was a cool 9˚. I went to start my Hybrid Tahoe (6.0L vortec) and it had this incredibly rough idle as recorded in the following...
  5. braveheartwallace

    Very unusual cold start

    Wanted to post this here to get some of y’all’s thoughts on what may be going on. This morning where I am in New Mexico it was a cool 9˚. I went to start my Hybrid Tahoe (6.0L vortec) and it had this incredibly rough idle as recorded in the following youtube videos: Initial start: A...
  6. braveheartwallace

    Hybrid transmission

    Update! My previous post identified the transmission as a CVT (continuously variable transmission), this was inaccurate! It’s actually an ELECTRONICALLY VARIABLE TRANSMISSION. This drives and behaves similar to a CVT acceleration wise, but unlike a CVT the EVT relies on several hydraulic...
  7. braveheartwallace

    Hybrid transmission

    That’s normal operating temp on my transmission.
  8. braveheartwallace

    Hybrid transmission

    I have not had my aux pump or control module replaced.
  9. braveheartwallace

    Hybrid Tahoe Engine Swap

    Update: Hybrid Tahoe is in the shop getting its gas engine completely overhauled/rebuilt. I decided not to run the overly complicated procedure of preforming a heart transplant.
  10. braveheartwallace

    Hybrid transmission

    Hi Tom, My hybrid just rolled 200,000 last December and is currently in the shop getting a complete engine overhaul (oil pump/hydraulic lifters issues). Around 150,000 miles the car shutoff completely and wouldn't start while displaying the dreaded "Service hybrid System" message. My chevy...
  11. braveheartwallace

    Hybrid Tahoe Engine Swap

    Do you think it would be possible to swap the damaged Vortec 6L for a commonly found Vortec 5.3L using the original wiring harness on the smaller engine? I've also emailed a couple GM engine swap experts.
  12. braveheartwallace

    Hybrid Tahoe Engine Swap

    I don't know if that would be possible. I'd have to find a hybrid Tahoe donor for an exact engine replacement in order for the engine to fit the wire harness and communicate with the hybrid control computer. The engine/trans, required harnesses, and ecm/tcm are all different on the non hybrid Tahoe.
  13. braveheartwallace

    Hybrid Tahoe Engine Swap

    I have a 2009 Tahoe Hybrid that recently passed 200,000 miles. Around 150,000 the electric drive train was completely refurbished by my Chevy dealer due to a "Hybrid Error." A day after turning over 200,000 the vehicle barely started and when it did there was a loud explosion and violent...
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