Recent content by lt1gmc

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    Brand new Trasmssion Aux pump

    Just FYI, if upgrading to the new style pump takes a new style module and harness, plus a programming of the new module.
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    Rear Engine Oil Leak Causes

    Had a persistent and getting worse oil leak on the rear part of the engine of our 2009 Yukon. Changed the oil bypass cover and gasket above the oil filter, oil pressure sensor, Oil Pan gasket (a royal pain in the Butt), tighten all VLOM cover bolts, all with no success other than making it a bit...
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    Used or Salvage Engine Purchase Ideas

    Recently needed an engine to replace the 234 k mile engine in our "09 Yukon Hybrid. Since they are a bit unique had to search the country. Found a 130 k mile one pretty close and the pics looked good. Had an idea to do a carfax on the vin and discovered the truck had the registration renewed in...
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    Mobil 1 212, 212A oil filter changes

    I have been using the Mobil 1 Oil filters on my vehicles for quite a while and use the M1-212 on my 13 Denali since it is longer and has more filter area than the original. Mobil recently replaced the M1-212 with the M1-212A which is supposed to be "Extended Performance". Below are 2 pictures...
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    VLOM (valley cover)

    Dorman has a replacement Improved design VLOM PN # 917162XD at Rockauto for $167, includes gaskets and bolts. Just used on on our "09 Hybrid, nice quality piece.
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    Service bulletin for hybrid bump/jerk issue

    I was referring to the 12 volt battery under the hood. just to the passenger side of the battery and under a black control box is a couple of connectors with wires leading down the driver side of the engine, one with some larger wires in it, maybe 3 or so. Disconnect both of these connectors and...
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    Service bulletin for hybrid bump/jerk issue

    No need to disconnect either battery, just the connectors, with the engine off of course.
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    Service bulletin for hybrid bump/jerk issue

    Sorry the truck is not nearby right now but you do not have to remove the battery. The two connectors are below the box just down and to the right (looking from drivers seat) of the battery. Only connectors in the area, the ones with the slightly larger wires is the one.
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    Considering a Hybrid. Am I crazy?

    I've a 09 Yukon Hybrid at 200,000 plus miles and a 13 Yukon Denali Hybrid at 113,000 miles. Changed the battery on the 09 at 190,000 using a new GM battery. No other hybrid issues on either other than a lurch issue on the 09 that ended up being a bad wiring connector to the aux trans pump. I'd...
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    Service bulletin for hybrid bump/jerk issue

    On my 09, I found the fix to be unplugging the trans pump/trans pump module connectors just under the battery and replugging them in. The high current overheats one of the pins and causes a bad connection. Did this a few times over 15,000 miles until I cleaned the connectors real good and didn't...
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    Towing with a '13 Yukon Hybrid

    The hybrid uses a totally different transmission and is similar to a CVT. It also does not have a torque converter. That said it tows my 5000 lb Bennington Tritoon just fine.
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    Spark plugs and wires

    120 K on mine and actually they looked good, might have gone another 20 k. Used RA, Iridiums 41-162 and the Delphi/Delco red wires listed, fit perfectly and look a bit cool as well.
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    2013 normal operating fuel pressure?

    Mine is not flex fuel. Not thinking the pump is bad because at full throttle revs to redline so has enough fuel, but after starting, fuel pressure is at 60, but drops quickly to 43 or so in a minute or two. At the same time the idle becomes rougher by a little bit but noticable. Trying to figure...
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    Stabilitrak Intermittent Message

    I had that issue when I bought mine, used. Bought new tires and its not been back.
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    M4 for towing with a Hybrid, I know but...

    FWIW I have towed a 5000 lb pontoon and trailer a few times a year for the last 4 years with my 09 Hybrid, always using Drive. Now at 199,000 miles and no trans problems.
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