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  1. M

    Has anyone run both the 'clean' and 'dirty' PCV lines into their catch can?

    Hey, odd question: I have a catch can setup for my 'dirty' pcv setup. Would it be a bad idea to 'T' both my clean and dirty lines from the Valve Covers to the can...then 'T' both the clean/dirty lines from the can to the manifold/intake? I do see some oil coming from the 'clean' side...and...
  2. M

    HELP!!! Part Number for 2007 Yukon Denali 6.2 Intake PCV elbow????

    Help all! I had a small mishap with the recently built engine and needed to tear things apart again. I tried to remove the hose to my catch can from the PCV elbow on the top of the intake. Sure enough, the sucker broke trying to remove the tubing. Does anyone have that PN handy so I can try to...
  3. M

    Oil Drip from PCV/Intake issue? Anyone experienced this?

    Hey all, I have a 2007 Yukon Denali (6.2L, no AFM) and I recently rebuild the engine (approx 4200 miles ago). Full rebuild w/ new pistons/rings, lifters, main/rod bearings, timing gear, oil pump, rebuilt heads...etc...etc. I recently went on a longer trip than normal and saw oil dripping from...
  4. M

    Anybody Flash an ECM after a tranny swap?

    Hey all, As my new engine gets the machine work done, I decided to look into the transmission. The 6L80e has over 131k on the clock and the fluid was definitely 'cloudy'. Decided to get a reman transmission shipped to the door. The company says I need to get the ECM reflashed to match the...
  5. M

    Noise when highway driving...no CEL???

    Hello all, I have a 2007 Denali with the 6.2L engine. Truck has 131K miles and has been serviced regularly (every 3k) for it's whole life. I do have the piston slap at warm up, but no bad sounds or other issue to speak of. No CEL or codes thrown...so I'm stumped. When driving around town (stop...
  6. M

    What the heck?!?! Need help identifying what I'm missing...

    Okay, Just purchased a used 2007 Yukon Denali. Well-documented service records but time for plugs/wires. I swapped them out but found an electrical connection that goes to nothing in the engine bay. Located on the driver's side close to where the firewall meets the fender. Looks like a 6-pin...
  7. M

    05 4L65e tranny into an 02...any issues?

    Hey all, Newbie here. I have an 02 Escalade with the 4L65e that has gone bad. I have a bead on an 05 EXT that was rebuilt 10k ago and driven until the wife wrecked the truck. Can I swap these out? I know I need to carry over the NP149, but for the transmission I believe the case and internals...

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