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  1. rockola1971

    Bad trans or transfer case?

    "when shifted to reverse with brakes being held it makes a super loud grinding noise." There is your clue. When the brakes are applied, the Tcase, Driveshaft and rear end are not rotating. But internally the transmission is. Its your transmission, not your Tcase. And the damage is likely...
  2. rockola1971

    Bad trans or transfer case?

    The pump rub applies to a NP246 Tcase. His AWD is a Borg Warner unit. 2 completely different animals.
  3. rockola1971

    2000 Suburban 5.3 Engine Knocking

    If there was only 1 quart in the engine then I wouldnt be surprised that this thing hasnt spun a main bearing.
  4. rockola1971

    2000 Suburban 5.3 Engine Knocking

    There is no way that noise in the original video is piston slap or valve tick. That noise has definite sounds of something that has worn to the point there is excessive play. Like a rod bearing that has spun and completely ejected its remnants from the journal it once sat in. BUT.... The...
  5. rockola1971

    Front brakes both sides heating up and dragging

    The internal diameter of brake hoses and lines would rarely ever see anything large enough to restrict them. The stereotypical brake drag causes are: Collapsed brake hose, bad master cylinder, stuck or improperly assembled caliper or air in the system(either caused by improper bleed or there is...
  6. rockola1971

    2003 Hydro Boost Swap Question …

    You are in luck. I have a 05 Yukon Denali and (2) 03 Tahoe LT's. Denali has Hydroboost. What is it that you need to see or know about the brake pedals?
  7. rockola1971

    Rear Main Seal

    Sounds like to me the mechanic claiming the engine needs to be torn down to replace the RMS is thinking GEN 1 engine and is not really experienced on Gen 3/4 engines. The Gen 1 and 3/4 as most of us know here are 2 very different animals when it comes to the RMS.
  8. rockola1971

    Front brakes both sides heating up and dragging

    How did you bleed the brakes? Old school pump, hold, crack bleeder loose, close bleeder and then repeat all the way around OR did you use a bi directional scanner like a Tech II and use the auto bleed feature?
  9. rockola1971

    I need help with 2002 z71 tahoe 5.3 4x4

    Check transmission fluid level. Drain some Tcase fluid and look for glitter and check the magnet of the tranny and the Tcase for chunks. You will need to drop tranny pan to check the magnet.
  10. rockola1971

    Reduced Engine Power, an opinion and experience piece!

    I disagree. Its almost always either a bad/worn TPS, Its associated wire harness (broken wire), Bad TAC module wiring harness (broken wire), Bad TAC module, Bad/worn Foot pedal Pot or ground issue. In that order of most likely fault.
  11. rockola1971

    04 Escalade Overcharge+Battery Drain +Guage Failure

    Pull the alternator and take it to auto parts store for testing before you blow the battery up or fry electronics in the vehicle.
  12. rockola1971

    Clunking/ knocking noise when floor my 06 Yukon denali

    Chain stretch is very common on a high mileage transfer case. If not caught fast enough it results in the chain chewing up the inside of the case and come peaking out of a YUGE hole that it has made which destroys the case. https://www.allstategear.com/NP246-Chains-s/2472.htm...
  13. rockola1971

    '04 6.0L Escalade AC Compressor

    How exactly can refrigerant pressures be correctly measured if the clutch isnt even engaging the compressor?????
  14. rockola1971

    '04 6.0L Escalade AC Compressor

    Low refrigerant (You have a leak).
  15. rockola1971

    Death Wobble Diagnosis Help

    Have a look at your upper control arms. The eccentric cams specifically. See if there are signs of being moved which throws the angle of the tire where it meets the road out (caster/camber). Also a common result of a deep pothole is a bent tie rod. It will be obvious and it will be your inner...
  16. rockola1971

    Little help with electrical issue

    There are 4 possible causes to the symptoms the OP listed. First is a bad battery. Has a weak cell and cant put out the correct voltage under load. Second is a bad alternator. And if the alternator is the cause it certainly can ruin a battery due to overcharging. Third is silver migration in...
  17. rockola1971

    Repeated stalls

    Thats the typical culprit...but that problem will produce a "reduced engine power" on the cluster and the engine RPM will default to around 1000rpm no matter what your throttle input is. If you were just having stalling problems then I would replace fuel filter AND the pump, esepcially when the...
  18. rockola1971

    Repeated stalls

    OP wrote "“low engine power”...Did you mean reduced engine power? If so this is a clue and usually means you have the dreaded broken wires at the throttle body for the fly by wire. A wire breaks in that harness and you will get that reduced engine power along with just above idle max throttle...
  19. rockola1971

    2003 Tahoe 4.8 4x4

    When you squeezed the caliper pistons back in so you could install the thicker brake rotors, you may have ended up with a leaking piston seal and now have air in your brakes. Start checking for brake fluid on rotors and calipers.
  20. rockola1971

    I need help with 2002 z71 tahoe 5.3 4x4

    Needs to be put on a lift and ran through gears with and without 4wd to see whats making noise.
  21. rockola1971

    2006 Tahoe/Locking brakes )car won’t move

    Your master cylinder and booster are not the culprits here. Everytime you crack open a brake line connection you are letting air into the system. That is a no go. The brakes will have to be bled....but likely they will need bled anyway AFTER you replace the collapsed rubber brake hose that is...
  22. rockola1971

    4wd not working 2002 Tahoe

    TCCM is likely lost because of a dirty or faulty Tcase Position Sensor (commutator) that is built into the shift moder (but is replaceable). This is the most common fault with the symptom you have. Doesnt hurt to get the codes that are thrown before throwing parts at it though.
  23. rockola1971

    Could this be a bad transmission pump?

    Rear of engine block/Tranmission bell adapter.
  24. rockola1971

    Could this be a bad transmission pump?

    Yup a cracked flexplate will mimic the noise in the vid too. The noise comes from the flexplate distorting outward around the crack and the nearest torque converter bolt head strikes the bellhousing area.
  25. rockola1971

    My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?

    The carbon restricts or completely stops the pintle from moving depending on where it gets wedged. It can wedge between the pintle and the inner bore of the IAC or behind or in front of the pintle reducing or completely stopping any movement inward and outward. This was a very common problem...

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