tig488

update, got the truck back runs great. quiet again. one issue, my oil pressure is on the high side so he ran a diagnostic and its showing a po6DA. I was getting a po6DD before that's why I replaced the oil pump and solenoid. this code means the solenoid is stuck open causing pressure to be high. by my gauge it shows around 50-60 but his reader shows it spikes up to 70-80 under heavy throttle. we think it might be a wire issue because the code shows up on his scanner with the key on without it running, but my truck doesn't show a CEL.

bringing this back from the dead. just completed a DOD delete AND oil pump replacement. now getting a po6DA. was getting a po6DD before this. that's why I went ahead and did the oil pump replacement. I don't have a check engine light but my mechanic is getting it on his diagnostics. runs fine, oil pressure is 20-40 at idle depending on temp, and anywhere from 50-70 during driving and acceleration. he can see the solenoid is working, he can turn it on and off with his device but sometimes it malfunctions. thought it might be a wiring issue but just wondering if anybody has had this before.

update. shop tore it down. intake lifter cylinder 8 (non DOD) exploded sending shrapnel into the engine. that was the tick that started a year ago and got worse all of a sudden when it broke apart. camshaft bearings all messed up. having new ones put in tomorrow. i had already purchased LS7 non DOD lifters, stock non DOD camshaft, and everything else needed to do DOD delete. had also purchased a new oil pump since we were tearing it down because i got a few P06DD codes, as well as replacing timing chain and tensioner, removing vacuum pump, and replacing the torque converter with a Florida TC. hopefully it'll run another 125K miles.

mine ended up being a non DOD lifter that basically exploded (after driving it for a year while it was clicking) and sent metal thru the engine. now replacing cam bearing, camshaft (which i was doing anyway), going ahead and doing the oil pump, DOD delete with LS7 lifters, and new aftermarket torque converter while its accessible.

I'm sure these cause a CEL?

ill take the Airaid MIT if its in good shape and comes with everything. send me a PM with total with shipping to 35173.

you can piece the kit together yourself. all of the big shops like texas speed, ams, BTR etc just charge you for the time to put it all together. you can go to rock auto and put it all together yourself like I did and save yourself a lot of money. the only thing you have to buy from a shop are the plugs that fill the oil holes under the VLOM. I doing all this currently for a collapsed lifter. I'm deleting my vacuum pump and having them install a new oil pump since I've gotten the Po6dd code a few times.

what year and model does this fit?

Hmm that’s strange. One of my lifters just failed. I’m going with a delete kit and having the oil pump replaced while they are there.

why did you have the VLOM replaced if you just did the lifter? is that recommended?

same thing is happening to me. remove the valve cover, its not hard. good luck, I'm feeling your pain.

2014 sierra 5.3L with 127000 miles, started having a very light barely audible tick a year ago. started getting CEL bank 2 A/F ratio imbalance. removed valve cover and noticed cylinder 8 intake rocker arm has about 3/8 inch of play between rocker and pushrod. removed it hoping the pushrod was broke or bent but was fine. cranked it and the rocker arm moves even with that much play. is that possible? and cylinder 8 isn't an afm cylinder.

2014 5.3L AT, 125000 miles. started getting the P219B CEL, bank 2 air fuel imbalance. no real symptoms except for some hesitation when accelerating uphill or passing but dont know if thats the crappy tranny. things ive done so far. swapped O2 sensors from R to L. new spark plugs about 10000 miles ago. regapped and swapped banks. same with coil packs and plug wires, swapped banks. new PCV and solenoid. started getting the lifter tick about a year ago so removed valve covers to check rocker arms and lifters but they are all good. no issues there. bought injectors but havent replaced them yet. ordered a vacuum tester to check for possible vacuum leaks and compression guage to check cylinder pressures. can anybody else think of anything i havent thought of. im gonna be pissed if put in new injectors and still get the code. really appreciate any other suggestions.

ive had this for years, 14 5.3 AT. was gonna have my tranny flushed by the dealership at their recommendation, never been done in 125K miles. called another dealer and they said DO NOT GET IT SERVICED. if I did it would die in a month. if its never been serviced I don't recommend it. I drive now on tow mode or use manual. its 75% better.

I wonder if there is a difference using the Mobil1 0w20 high mileage (I have a 5.3) vs the 0W20 dexos oil. I usually use the dexos oil but they didn't have it so I went with the high mileage oil. I started getting the 06DD code also. after I clear it, sometimes takes weeks to come back.