Search results

  1. 99Vortec

    Distributor upgrade?

    Getting ready to replace mine, and going to try this one. https://www.rockauto.com/en/moreinfo.php?pk=1130207&cc=1355510&jsn=418 I've got about 268K on the stock 'dizzy'. Amazingly there is no correlation error yet, just stripped out plastic cap mounting holes. Dorman makes a bracket to...
  2. 99Vortec

    Question about doing oil changes without removing drain plug

    I know huh? I really have to purchase a welding machine!
  3. 99Vortec

    Question about doing oil changes without removing drain plug

    I had a tech tell me I might need a new oil pan on my 1999. I got lucky and just installed a new M12-1.75 thread bolt.... (The material on the bolt should be softer than the thread material on the pan.) gl
  4. 99Vortec

    Help 99 Tahoe shudders/ jerks

    I still do not understand the reasoning behind using a plastic/composite distributor base. Can someone enlighten me here, is it to isolate or insulate?
  5. 99Vortec

    P1870...anyone done the fix

    I did an outright valve body replacement on mine. It was pretty dirty work. (Lots of tranny fluid continually leaking with every fastener removed.) 1-5/16" socket worked well to disengage the main wiring harness assembly. It was about $300 or so if I remember for the upgraded valve body...
  6. 99Vortec

    Front of oil pan leaking!!!

    If it is coolant, it is definitely not dex-cool.
  7. 99Vortec

    Help! Starts strong. Dies instantly. Every time.

    Your security light still illuminated constantly Kevin?
  8. 99Vortec

    1999 Tahoe 4x4 not working

    I would check/trace every bit of visible wire to and from the transfer case/front differential. Are any tcase fuses being blown? Your transfercase could very well be internally damaged, but it would be a pisser if something electrical and not mechanical was holding it down. You mention that...
  9. 99Vortec

    catalytic converter

    Your '99 will have a bank1 upstream and downstream Oxygen sensor and a bank2 upstream and downstream Oxygen sensor lined up on each Catalytic converter. If you have ever had a problem with unburned fuel running into your Catalytic converters then they could be damaged. Are you getting any...
  10. 99Vortec

    Fuel capacity

    Fkn' nice :yuno:
  11. 99Vortec

    Fuel capacity

    Exactly. But once I got my tank back to the station, the 30 gallon capacity was verified... (Minus of course the 1 gallon added to get rolling again.)
  12. 99Vortec

    Fuel capacity

    Trick is you are going to actually have to run it out of gas to test it. ;) (I found my fuel gauge was innacurate along Interstate 80 near Travis AFB exit.) (Resulting in a 5 mile walk to a gas station that was selling billion dollar powerball tickets...Sigh.)
  13. 99Vortec

    Replacing Transfer Case in 99 Denali

    Yes, the Transfercase saver kit!
  14. 99Vortec

    5.7L Vortec Superchargers?

    So thread looks a bit old, but still on page 1. Forged pistons work WAY better in Nitrous/Turbo/Supercharged applications than Cast versions. Also steel crankshafts help. ;) Don't forget to lower piston compression ratio for specific application.
  15. 99Vortec

    ECU Flash

    Hp tuners possibly? If you want bi-directional programming. Just heed the warning. http://www.hptuners.com/forum/showthread.php?2928-97-98-V8-and-All-V6-users-important-read-this
  16. 99Vortec

    5.7 Vortec backfire/shudder

    Any excessive exhaust backpressure?
  17. 99Vortec

    Problems with 95 Tahoe after installing new motor.

    Are you kidding me? You had a new motor and an old cap and rotor? What tha? How many miles do you have on the distributor gear?
  18. 99Vortec

    start then stall 2000 denali

    I miss my '69 Camaro. <
  19. 99Vortec

    Problems with 95 Tahoe after installing new motor.

    Could leaving his old Knock sensor behind cause problems? (If in fact that did happen?)
  20. 99Vortec

    Temperature Gauge fluctuation

    Have you tried pressure testing your cooling system?
  21. 99Vortec

    Best egr valve

    The maf can be cleaned. (Use approved spray only.) The egr valve will also sometimes hang open at idle if it is dirty. Good Luck!
  22. 99Vortec

    Information on Engine Oil Consumption Guidelines

    Glad the TSB relay helped!
  23. 99Vortec

    Slow cranking when hot

    Almost sounds like the system is trying to throw out the spark a bit too early? Similar to too much advance on earlier models? (I.e. trying to throw out spark while compression stroke is still rising?) Idk, gl. (Or you are overheating?)
  24. 99Vortec

    Truck won't start

    I really have to change my distributor. Going on 240K!
  25. 99Vortec

    Information on Engine Oil Consumption Guidelines

    Yea, this was a headscratcher for me. I was wondering about the oil usage as my compression checked out. I gated my pcv system down just a bit and monitored oil consumption during a 3-4k mileage period and it (The consumption.) still persisted.

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