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  1. 2 points
    I was going to ask if this was a direct injected engine the other day. Watch this video.
  2. 2 points
    Please keep us posted. I am skeptical of the top end cleaner as you did not have the issue before the repair. If you were burning oil excessively It is highly suggested, although I have not found great success in it, even after being done twice. I feel for you as I pay pretty good on a rare occasion to have someone do a job for me, Expectations are high but end result may vary. I wish you the very best
  3. 1 point
    Funny you should say that. There is much talk that the AC Delco stuff is actually the Chevron stuff relabeled. Some say if you turn the bottle upside down it says Chevron on the bottom. About half the price too... The AC Delco stuff is hard to find. Basically the options are pick it up at the dealer, eBay or AMAZON.
  4. 1 point
    Logan

    Cadillac Deville crank but no start

    Curious.....does the serpentine belt look fairly new? I've had a couple of serpentine belts fail in a new way....so much so there is one brand I won't use. They let go one of the outer 'strings' on the belt......the long broken belt string whips around knocking out sensors and wiring along the way. This can go on for a thousands of miles before being noticed. Maybe the cam sensor fell victim to this? Maybe why he cannot see the sensor? It got wiped out by a bad belt? Belt picture is from Google....not mine. The ones I've seen have only been one of the outer strings failed. Northstar pic shows the cam sensor would be directly in-line for damage from a failing belt stringer. It also shows the cam sensor moved closer to the intake on the latter engines.
  5. 1 point
    Logan

    Cadillac Deville crank but no start

    A fused jumper is just a jumper wire with a fuse in it. So we are not burning up new problems... I would leave the pump in the tank......remove the fuel pump relay.....install a fused jumper across the relay......see if you now get voltage at the fuel pump harness plug out in the trunk. If you now have voltage at the pump connector.....plug in the connector.....pump should run. Unrelated....I also attached pic of the cam sensor. Rear cylinder bank....near passenger side. And one of the fuse block.....fuel pump relay (#39) and 20a fuel pump fuse (#1) hopefully showing the correct orientation of relay (not verified) with "OMRON' on the outside corner of fuse block.
  6. 1 point
    Logan

    Cadillac Deville crank but no start

    I would focus on the 12v issue at the pump. Should have 12v for about 2 seconds at key 'on'. You may have to set DVOM against back window to watch and see....I dont think you can get back to the trunk fast enough to see it on a DVOM. Varying fuel pressure readings earlier...and now reading 0 psi... It appears someone did actually install a new pump trying to fix it. Could be a blued wire connection or even a broken wire inside the insulation. Can be either the male or female part of the connection. Can be inside the plastic part of the connector. Look for melted or scorched looking plastic around the male prongs. I am assuming the new fuel pump assembly was a complete drop in 'bucket' assembly....I would think that would solve any issues on the pump end of the business. It can require a very, very close inspection....maybe it is just going unnoticed. I did attach another picture example of a blued / hot fuel pump connector. It can also be at the wire connections inside the tank....not just the outside plug. Other issues: The fuel pressure gauge may have been damaged in a odd way being connected to the Chevy. In one post I think he mentioned swapping some relays around.....hopefully he knows the relay pins have to be oriented in the correct position. Could be wrong or defective pump assembly. If....upon inspection....nothing is found at the tank end.... I would head to the fuel pump relay....remove the relay and put a fused jumper in and see if there is now voltage out to the pump. Retest. The car isn't going to start without 12v at the fuel pump.
  7. 1 point
    rockfangd

    04 Cadillac deville P0016

    Unfortunately that code is not stating that the cam sensor is not working but rather that what it is showing does not match what it should be. In some cases it can be sensor failure. But typically it should have a code related to it. Best of luck to both of you.
  8. 1 point
    Ok I'll try this weekend.
  9. 1 point
    I will let all members know after assembly.
  10. 1 point
    The screen in this photo is the one you speak of correct? Maybe that is your problem. Are the shift solenoids the new design with bracket? Maybe it is not installed correctly? What valve body did you replace? We are looking for second gear starts. The torque converter was not replaced and could distribute clutch material, what does the pan show? If you have ANY debris, you are spinning your wheels. We know that the P0741 damages the TC clutches and can spew clutch material. Have you looked at this? https://www.sonnax.com/parts/2338-afl-valve-kit
  11. 1 point
    When you blow them out disable spark and spin the engine over a few times with some oil in the plug holes. (plugs removed.) This will help to blow out any possible debris and lubricate the cylinder. Then put it all together and see what it does
  12. 1 point
    Absolutely no word from the dealership since they picked up the SRX last Thursday. Guess it's not something simple or they still haven't figured it out. GM was supposed to do a followup call today and haven't received that call either. Really enjoying the XT5. Highly recommend it for those who liked the SRX. Great upgrade. Wish this one was a higher trim level (it's a base). I would definitely order the Premium trim level again. Had I driven this vehicle before having to make the decision on whether to fix my SRX I may have made a different decision... For now I'll just keep piling miles on their XT5. Closing in at 400 miles on it already (it had 825 when they delivered it to me. What a crazy mess this has been.
  13. 1 point
    Tested silverado fuel pressure. Key on 52 PSI. Truck running 60 PSI. Was able to bleed all the gas I wanted. I would think that shows fuel pressure gauge is working just fine. I ordered an AC Delco fuel pump. Should arrive tomorrow.
  14. 1 point
    Logan

    Cadillac Deville crank but no start

    Service manual shows 55-62 on the 04 Chevy 5.3L. My guess is the gauge is 'good'.....but you never know.
  15. 1 point
    Logan

    Cadillac Deville crank but no start

    I should add.....there was a Mercedes we inherited once.....sat unused for 5-6 years in a hot climate......sour fuel. Original pump and fuel filter were locked with a black goo...fuel level sending unit was also bad.....first replacement pump also failed after a couple of months. Second replacement pump kind of fixed it.
  16. 1 point
    I think (just my two cents) is that the pump is bad. I have seen on other sites that you should really use an A/C Delco (or other OEM); maybe the pump replaced was an off brand. (Just a WAG; wild arse guess). I surely will yield to the more tech-savvy responses.
  17. 1 point
    Logan

    Cadillac Deville crank but no start

    I don't see anything that proves the pump was....in fact....replaced. No one in the room saw it replaced....or maybe it was a flubbed installation or wrong pump. What year and engine is the Silverado? It likely has a different fuel pressure spec. I can look up the spec. That would help verify the gauge reading.
  18. 1 point
    Of course while this is all very interesting, I think it's worth noting that two engine cleanings made absolutely no difference in the issue. I sure hope they look at other options at this point. All along I was sceptical of that approach as the current issue occurred directly after their repairs. And yet throws the same codes as the original issue. Should be interesting to see what they come up with next.
  19. 1 point
    This is too funny. I watched that one too. 😂
  20. 1 point
    rockfangd

    Cadillac Radio numbers

    I just pulled one of my caddys out for the season and immediately noticed the different radio. These are incredible. I am so glad I researched and figured out it was possible. The sound systems that mine have are far superior to any other vehicle I have had.
  21. 1 point
    Halfway through our road trip. I REALLY wish they hadn't given us this vehicle. Is great. It's a dream on the interstate. Overall I'm really enjoying the XT5. Will make a good replacement for the SRX one day. Hopefully far far down the road. No update thus far from the dealer.
  22. 1 point
    Put car back together with new plenum. Just waiting for the MAP sensor that I broke before seeing if that was my problem. Hope so!
  23. 1 point
    Correct. FWD. Last time they put me in a 2018 GMC Terrain. This time I'm in a 2018 (Red) XT5 (the successor to my SRX). Hope they're not trying to tell me something... Lol. What an adventure. I'm ready for it to be over.
  24. 1 point
    The 5 MPH impact shocks that hold the front bumper have leaky seals. The oil loss is preventing the bumper from staying in place, so I cannot get the middle of it to stay aligned with the grille. I will eventually replace them and get the bumper located correctly. (NOTE: the licence plate holder was left off for now to better show the middle.)
  25. 1 point
  26. 1 point
    Actually I've been researched the heck out of DI engines and the issues of valve buildup ever since they started blaming the issue on it. And I just so happened to have already watched that video. GREAT video btw.
  27. 1 point
    Cadillac V-Performance Racing teams Whelen Engineering Cadillac, Mustang Sampling Cadillac and Konica Minolta Cadillac are headed west to Long Beach, Calif. for round three of the IMSA WeatherTech SportsCar Championship and the Bubba Burger Sports Car Grand Prix of Long Beach to run April 13-14. View the full article
  28. 1 point
    Logan

    Cadillac Deville crank but no start

    I think the bulletin you mention is for the 4.9L and earlier engines. On the 4.xL engines there is a ground wire mounted to the front of the engine block next to the starter. Current issue thinking there was a major backfire.....causing some smoke in the intake.....smoke leaked out of the ruptured plenum boot.....which is located directly above the starter on a Northstar. You really need a scan tool to condemn the PCM. There is plenty of stuff right now that needs to be verified before even thinking it's a bad PCM. Check for a ripped rubber plenum.....low fuel pressure issue....no spark issue... Then again....maybe it's a flood car...all the computers may be toast.
  29. 1 point
    really common issue by the way. It may cause no start as there is too much air being pulled through it rather than the Throttle body
  30. 1 point
    This is the plenum
  31. 1 point
    The GM 'top engine cleaner' stuff dates back to at least the mid eighties for carb engines. I did see a couple of part #s.......GM part numbers 1050002, 1052626. Try a Google search. You actually pour enough in fast enough to actually stall the engine.....then let it sit overnight if possible. You are suppose to pull all the plugs and crank the engine over before starting....if not you risk hydro locking the engine. You can bend valves and rods if your not careful.
  32. 1 point
    Logan

    Cadillac Deville crank but no start

    Can you explain exactly how you tested for spark? I guess we want to verify your procedure... Did you get a HEI tester? I would likely check every one....should be pretty easy to do. I would also get some of the gas from the fuel rail end (from relief hose) ......pour a little bit on a sidewalk.....and see if you can get it to light and burn. If bad gas....there can be a bunch between the tank and the fuel rail. Can be sour....sugar....diesel etc mixed in.
  33. 1 point
    Agreed. I guess the proof will be in the pudding. As long as it works when I pick it up then whatever. They want to keep it an additional day or so to be sure it's fixed. I'll keep you updated.
  34. 1 point
    The fuel comes from the gage, does you gage have a button on it that when you push it,.it releases pressure and fuel into a separate hose? This is sounding like a fuel pump or clogged fuel filter
  35. 1 point
    Yeah, and this is why I do 90% of my own repairs. But when I started researching the original issue, I decided it was outside of my comfort level and felt like I'd be throwing parts at it. But now I feel like they may have thrown parts at it. No doubt the cats where probably clogged, but were the injectors the actual cause? I've had overall good luck with this dealer in the past. Hope that continues...
  36. 1 point
    Logan

    Cadillac Deville crank but no start

    You need a HEI tester.....it should produce a distinctive visible spark and snapping spark sound. Think they are about $10. Aftermarket alarm or remote start systems on Cadilllacs.....seem to work for a year or 2 and then stuff like this happens...If it has one it needs to come out.
  37. 1 point
    Logan

    Cadillac Deville crank but no start

    When you said "4 in a strip".....I thought you were talking about the 2000-2003 coil cassette(s).
  38. 1 point
    Cross-ref here for 98 but similar: Quite a few yes. Is there a specific symptom that you also are finding? The B codes are body short circuits (windows, seats, memory settings); the C codes chassis (suspension, stabilitrak), the U codes are bus communication issues. Good new is no P codes for engine issues. Several of these seem to suggest the system is shorted to ground, which may mean water incursion, or frayed wiring, or poor ground -- such as lost ground strap(s)?
  39. 1 point
    Sorry guys! Next time I'll try and keep them shorter. I'll try starter fluid in throttle body. I cleaned throttle plate when I had it off. I also checked for hole in plenum but there was so much soot, black greasy stuff, I really couldn't see one. I'm thinking spark as well and trying to borrow and if need to buy a fuel pressure have. Thanks for advice.