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  1. R

    Warm Start stumble/multiple attempts... where to start looking?

    But by all means check with a mechanical fuel pressure gauge. If the mechanical gauge shows the readings are incorrect and you have normal fuel pressure, then your electronic fuel pressure sensor is likely the problem. For example, it could be telling the ECM you have more than enough fuel...
  2. R

    Warm Start stumble/multiple attempts... where to start looking?

    That still seems rather high. I'd check with a mechanical gauge on the fuel rail to verify.... Even 82 PSI raises safety questions. GM used to have a return line on the ls engines which used a pressure regulator. I'm thinking they did away with that around 2005. After that I believe the pressure...
  3. R

    Warm Start stumble/multiple attempts... where to start looking?

    Wife got home with the 2014 Escalade, she has a 20 minute commute at highway speeds. Did the fuel pump about 9 months ago, an ACDelco unit. It was 58 PSI idling. Turned it off and crept up to 63 PSI, never went higher. I'm not 100% sure, but I don't think your fuel system is rated for 100...
  4. R

    Warm Start stumble/multiple attempts... where to start looking?

    Did I read that right, fuel pressure rises to 100 PSI? You're lucky if the only thing leaking is the injectors into the cylinders! If that fuel pressure reading is correct, verified with the mechanical gauge off the fuel rail, I'm thinking it's time to drop the tank and change out the fuel pump...
  5. R

    Warm Start stumble/multiple attempts... where to start looking?

    Definitely sounds like something we need to address with the tuner. On a side note, your coolant temperature gauge operating correctly? The ECM uses that as well as ambient temperature in its calculations for fuel mixture..... Thought I'd throw that out there in case your temperature sending...
  6. R

    Front Lower Control Bushing

    LOL ... And a lot less effort than trying to press new bushings in!
  7. R

    Stabilitrak/Traction Control Issues

    Just a good reason I suppose to always use AC Delco or genuine GM for the sensors. And based on what we discovered in my case, you can't effectively rule out an aftermarket sensor until it's replaced..... So going forward, if I buy a used vehicle, I guess I'll just have to go through and check...
  8. R

    Stabilitrak/Traction Control Issues

    Found it. " Walker Products 235-1156 Engine Camshaft Position Sensor" Stay away from this item.
  9. R

    Stabilitrak/Traction Control Issues

    They did the relearn twice with no effect prior to removing it. (And I had done it about a week earlier in the troubleshooting process) If I remember correctly, it was a review on Amazon or someone posted same experience that tipped me off.
  10. R

    Stabilitrak/Traction Control Issues

    The problem with mine wasn't a CASE relearn. For the first time in 30 years I let the dealer have it for a couple hours and try to diagnose. They were stumped. I had read something online, and told them to go ahead and change the camshaft sensor. And that cured the start issue. They were...
  11. R

    Front Lower Control Bushing

    Definitely just swap out both control arms. Did the wife's Escalade a little while ago, marked where the adjusters were. Went for the alignment and it was almost spot on.
  12. R

    Stabilitrak/Traction Control Issues

    "Did you use a GM sensor? Plenty of stuff I read online said only OEM sensors work correctly" How true. I have found this an accurate statement on crankshaft and camshaft position sensors, oil pressure sensors, as well as the ABS sensors to name just a few of the more common ones. For example...
  13. R

    Transmission Cooler Line Popped Out

    I just read the original post again. The tranny cooler portion of the radiator is not plugged. It was her upper transmission cooler line that popped out of the radiator.... The transmission fluid enters through the lower fitting and exits through the upper.... Was probably just a bad fitting...
  14. R

    Transmission Cooler Line Popped Out

    Yep, if you don't use any power tools, the smallest and cheapest air compressor from harbor freight will be more than adequate.
  15. R

    Transmission Cooler Line Popped Out

    Coolant Vacuum Refill Kit, Cooling System Radiator Vacuum Purge & Fill Tool Kit, Automotive Coolant Filler https://a.co/d/demKaUc
  16. R

    Transmission Cooler Line Popped Out

    The right way to fill the cooling system is to use a vacuum. Amazon has them starting around $35. Sucks all the air out of your cooling system and then draws the coolant in. Otherwise you risk having a large air pocket which does bad things. I would also disconnect both transmission lines at the...
  17. R

    Exhaust rattle issue

    If you had a misfire or a defective catalytic converter, you'd get a check engine light. But yeah, I like the rubber mallet I keep hanging on the wall. Tap on the catalytic converter as well as the muffler and resonator if you have one. Could be just a baffle inside of the muffler came loose...
  18. R

    Coolant temperature fluctuations normal??

    Scary thought. Low on coolant and an oil pressure gauge not working. Is it really not working? Or do you have coolant mixed with the engine oil thinning it out to where you have no oil pressure? Better start checking things out. I'd start with an oil change and see what comes out from the drain...
  19. R

    6.2l engine tick

    2014 Escalade, L94 6.2. 166,000 mi and never made a sound when started cold. Always use 5W30 full synthetic, always change at 5000 MI. AFM/DOD deleted last year. It's never used a drop of oil between oil changes. Nothing after the 2009 model year should have piston slap. GM finally addressed it...
  20. R

    AFM disable or lifter issue 2012 PPV TAHOE

    Just having the strange smell would seem to indicate that something other than the lifters. I be checking the wiring harness for anything melted. Also for any oil leaks saturating any part of the harness. Such as the camshaft or crankshaft sensor. While you're at it make sure the two large plugs...
  21. R

    2012 Yukon XL - 6.2L Engine Rebuild/Swap & Addressing AFM/DOD

    Pay attention to which camshaft they package when looking for the AFM DOD delete for the 6.2 on their website. It will likely only offer you the lower lift camshaft that came on the 6.0. You will obviously lose some horsepower on that. The correct camshaft is from the l9h engine as detailed in...
  22. R

    DoD/AFM delete question.

    Or the OEM camshaft for the 6.0? I'm assuming you kept VVT?
  23. R

    DoD/AFM delete question.

    Did you use the OEM cam for the L9H? For the OEM camshaft for the 6.0?
  24. R

    6.2 L94 DOD AFM delete advice?

    Also this is a matter of preventative maintenance, engine still running fine. Plan to pull the motor and do all this in early March, as it needs a rear main seal or rear cover gasket replaced. Small leak, maybe three drops a day on the garage floor
  25. R

    6.2 L94 DOD AFM delete advice?

    Looking for feedback from anyone who has used the l9h camshaft when deleting AFM DOD. Looking at the specs, it's very very close to the stock l94 camshaft with just a little more duration. I'm just wondering if I will need to come up with a tune to run that camshaft, or if it's close enough that...

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