Originally Posted by CathedralCub

Okay back to the task at hand:

Do you know that it has skipped a tooth or is this an assumption and/or guess?

At this point I'm not sure of much but as I look at the two cam gears/phasers are not matching the other in how their rotating on the head. I don't know if this is even a valid observation or not but it seems to "me" that they may be made to correspond with the other. there around 10-15 % off from each other ( just a calculated guess) or maybe uncalculated... If that'* the case I can understand why it keeps throwing these codes.

Okay, good to know what you found.



Since we're still troubleshooting, we'll need to know which ones were cleaned, which were checked, and which were replaced.

I replaced the exhaust Phaser solenoid from the beginning because it looked like it had been out and some how the mounting bracket got tweaked and didn't fit flush with the valve cover. I believe the new one may now be on the intake side now since they have been out, cleaned and checked with 12 volts to see if they engage, which they do.


- P0014 - Bank 1 exhaust camshaft more advanced than commanded
- P0017 - Crankshaft position sensor does not correlate with Bank 1 exhaust camshaft
- P0106 - MAP sensor reading erratic and/or readings don't correlate with changes in engine load



How was this determined? Counting teeth and links? Marks? Etc.?

I wish that I could send you the pic but some how the forum uses a different format and I'm uncertain how to change it over to the required one. The front markings/bolts alignment if a little off from the other.


"guessing" probably isn't the best way to go about this.

Yeah I agree, I don't have the experience that I need with this mill....and not sure that I want it but here I am....


Yeah they are probably a dealer-only part on an engine this new.

I'd figure. I just don't like the way the dealer goes about their business. They wanted to charge me 250$ for the valve cover gasket in the initial estimate of 1200$ just to diagnose it. It'* a 50$ part. That go'* against everything that'* within me.


I don't, maybe someone else here does.



Make sure you're clicking the upload button at the upper-right corner of the upload dialogue box.

I just may catch on after a few years....


You only have one bank. P0014 and P0017 are for the exhaust camshaft position. The exhaust camshaft is the one on the same side of the engine as the exhaust manifold.

I am concerned that this is not getting diagnosed properly. Someone with the right tool could, probably for an hour'* labor, tell you if the cam phasers are functioning properly by commanding different angles and recording the responses, and then checking if those responses are an adequate range even if the range is off. That tells if the phasers are working properly even with a skipped cam gear. If it is supposed to phase from -5 degrees to +5 degrees (for example), and it is actually phasing from 2 degrees to 12 degrees, voila' the phaser is working and the cam gear is out of time. I know it got poorly maintained in its past, but cam gears skipping happens so seldomly that I usually default to doubting that it happened unless I hear that a proper diagnosis of this was done.

I could check around and see if I could find someone who has a tester that could do that. I'd have to put the valve cover back on but hey, I'm getting pretty good at that. Genetics I suppose.


LOL I don't know about all that, but thanks for the compliment! I'll give a few answers and let you decide which are your favorite:

1. From GMForum of course!
2. School of hard knocks.
3. Genetics.
4. An unusual history of vehicle ownership.
5. Friends/family/acquaintances unusual history of vehicle ownership.

Originally Posted by carfixer007

You say it was serviced 'Poorly'. You need to replace the timing components with the cam phasers also. You are not going to clean them up.

Originally Posted by carfixer007

What are you asking now? Those codes aren't going anywhere until you fix those cam phasers. Is there something else?

Originally Posted by lambright11

But can we say for sure that the phasers are the problem?

Originally Posted by carfixer007

Now I'm really confused. We are talking about two different cars?

Originally Posted by lambright11

Nope, the same 2019 Spark 1.4

Originally Posted by lambright11

I rebuild a wreck or two a year just for fun. This Spark is a wreck of a different nature

Originally Posted by lambright11

With all the sludge in the engine I thought that it may be beneficial. I'm wondering if it may be more cost effective and better in the long run to just put a used motor in it? I can get one with less that 5K on it for 650$. It would probably be more work but may be best?

Originally Posted by lambright11

But can we say for sure that the phasers are the problem?

Originally Posted by carfixer007

What'* left?