07 6.2 P0011

[YaCat]

This is a 6.2 with nearly 250k miles and still runs pretty well but this one code could get the CEL off for me if I could figure it out. I’ve done a good amount of reading and it doesn’t seem like one particular part/parts is guaranteed to be a remedy here. If it were you, where would you start? Thanks in advance

 

[swathdiver]

This is a 6.2 with nearly 250k miles and still runs pretty well but this one code could get the CEL off for me if I could figure it out. I’ve done a good amount of reading and it doesn’t seem like one particular part/parts is guaranteed to be a remedy here. If it were you, where would you start? Thanks in advance

What code? What's going on with it?

 

[YaCat]

P0011 or “Timing too advanced - bank 1”, I think it’s related to VVT but I’ve seen threads where people have replaced the oil pickup o-ring and the VVT specific stuff and I’m not sure what exactly is the fix here. I have normal-ish oil pressure for a tired 6.2, 40psi cold startup, 25-30 at 2k rpm cruising and about 15 hot idle.

 

[YaCat]

Also, I’ve been running premium over regular under the assumption if the engine can’t retard timing like it wants to with lower octane, it’s probably going to knock. I probably shouldn’t drive it at all for now. Guess I’ll try the solenoid actuator and bolt that lives behind the water pump as a starting point

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

I cannot personally help you with your question; however, other members on this Forum that are much more knowledgeable than me will chime in.

 

[mrpeterclark]

Same issue. It’s been intermittent but more pretty consistent. I replaced the actuator solenoid and it didn’t fix mine. I tried running premium and 87 (I’m in Colorado) and neither seems to change. Maybe a tired oil pump or stretched timing chain. Could be an oil pressure issue I suppose. I also have a front main seal leak. with a few more of those repairs I think might as well just rebuild the thing. if I can figure it out I’m sure it’s got another 20k or more in it. I’m at 245K.

 

[BG1988]

Same issue. It’s been intermittent but more pretty consistent. I replaced the actuator solenoid and it didn’t fix mine. I tried running premium and 87 (I’m in Colorado) and neither seems to change. Maybe a tired oil pump or stretched timing chain. Could be an oil pressure issue I suppose. I also have a front main seal leak. with a few more of those repairs I think might as well just rebuild the thing. if I can figure it out I’m sure it’s got another 20k or more in it. I’m at 245K.

has the oil pick up ever been changed?

 

[BG1988]

P0011 or “Timing too advanced - bank 1”, I think it’s related to VVT but I’ve seen threads where people have replaced the oil pickup o-ring and the VVT specific stuff and I’m not sure what exactly is the fix here. I have normal-ish oil pressure for a tired 6.2, 40psi cold startup, 25-30 at 2k rpm cruising and about 15 hot idle.

15PSI is not enough the minimum PSI should be 25PSI hot

mine is at 50PSI hot idle and 60PSI while driving but I have a corvette HIGH Pressure variable oil pump


on a cold day it can reach 70psi

oil pick up tube most likely is bad this can be tested easily though by over filling the pan(see the thread before attempting though)

 

[mrpeterclark]

has the oil pick up ever been changed?

No.

 

[BG1988]

No.

try that most likely it is leaking pressure or air bubbles getting sucked into the pump

 

[Geotrash]

try that most likely it is leaking pressure or air bubbles getting sucked into the pump

+1

 

[91RS]

15PSI is not enough the minimum PSI should be 25PSI hot

Not at idle. The spec for hot is 24 PSI at 1000 RPM.

 

[91RS]

With the mileage, you probably have a broken timing chain tensioner and stretched chain. I would replace it all since it all has to come off anyway to replace one thing. Camshaft actuator, solenoid valve (actuator bolt), timing chain, tensioner, and oil pump.

 

[BG1988]

Not at idle. The spec for hot is 24 PSI at 1000 RPM.

Not according to the operator manual it says it should be 29psi to 80PSI under normal conditions the op has normal weather conditions...

All Gen 4 engines require the same engine oil PSI(except for the corvette engine but the configuration is "different") so it does apply to the normal 4.8/5.3/6.0/6.2/8.1

Yes Is does say it could be as low as "15PSI" in some circumstance ... but they still follow up YOU have a problem and it needs to be fixed

it also says the engine can catch fire as well. They put it TWICE of the same message just incase you missed it the first time..

 

[BG1988]

With the mileage, you probably have a broken timing chain tensioner and stretched chain. I would replace it all since it all has to come off anyway to replace one thing. Camshaft actuator, solenoid valve (actuator bolt), timing chain, tensioner, and oil pump.

forgot about the oring on the pickup tube slurping up air

 

[jeremiahm]

Same issue. It’s been intermittent but more pretty consistent. I replaced the actuator solenoid and it didn’t fix mine. I tried running premium and 87 (I’m in Colorado) and neither seems to change. Maybe a tired oil pump or stretched timing chain. Could be an oil pressure issue I suppose. I also have a front main seal leak. with a few more of those repairs I think might as well just rebuild the thing. if I can figure it out I’m sure it’s got another 20k or more in it. I’m at 245K.

I had a front main seal leak and it turned out my PCV valve had stuck closed and was creating internal pressure pushing it out. It was after the really hard cold in Colorado Springs jan/feb of 2021, started as a few drips and turned into 2 quarts over 400 miles and a couple of nights in Rock Springs, WY! Great little town BTW.

 

[91RS]

Not according to the operator manual it says it should be 29psi to 80PSI under normal conditions the op has normal weather conditions...

All Gen 4 engines require the same engine oil PSI(except for the corvette engine but the configuration is "different") so it does apply to the normal 4.8/5.3/6.0/6.2/8.1

Yes Is does say it could be as low as "15PSI" in some circumstance ... but they still follow up YOU have a problem and it needs to be fixed

it also says the engine can catch fire as well. They put it TWICE of the same message just incase you missed it the first time..View attachment 373335

It doesn't say less than 15 PSI means you have a problem, it says that could be normal. It says don’t drive it if the oil pressure is low and doesn’t actually give a number so that means when the low oil pressure message comes on and I hate to break it to you but the low oil pressure message doesn’t even come on until 5 PSI. Here’s the diagnostic for P0521 oil pressure sensor performance. And no, not all engines have the same oil pressure spec. GM has specs listed varying a couple of PSI for different engines.

 

[91RS]

forgot about the oring on the pickup tube slurping up air

Yeah? I also didn’t say he’d need to replace the front cover gasket, front crank seal, crank bolt, water pump gaskets, oil pan gasket, oil, oil filter, coolant, and oil cooler line gasket (if equipped). The o-ring is a given if you’re placing the oil pump…

 

[a4edwin]

I replaced the the solenoid first. Then chain, tensioner, the tube, and o ring. Still had the code. Ended up changing the solenoid again then the problem went away.

 

[YaCat]

My oil pressure is definitely under what’s preferred but my code comes and goes. Sometimes it behaves long enough for the CEL to go off then it comes back on in a few drive cycles.