muddkatt

Run the same route again, but this time run 70 in the direction you ran 65 and run 65 in the direction you ran 70.

FYI, this is from a post by MS3DALE back in 2010. Subject: Do Not use Slip Yoke Grease from Bulletin #09-04-17-002C on 4WD Vehicles -------------------------------------------------------------------------------- GM Customer Care and Aftersales *URGENT - DISTRIBUTE IMMEDIATELY* DATE: November 4, 2010 SUBJECT: Do Not use Slip Yoke Grease from Bulletin #09-04-17-002C on 4WD Vehicles. MODELS: 2007 – 2009 Chevrolet Silverado 1500 Series 2008 – 2009 Chevrolet Avalanche, Suburban, Tahoe 1500 Series 2007 – 2009 GMC Sierra 1500 Series 2008 – 2009 GMC Yukon, Yukon XL 1500 Series Equipped with 4WD (RPO NQG, NQH) TO: Chevrolet/GMC Dealers ATTN: Service Manager and Parts Manager A new grease, part # 19257121 (in Canada, 19257122), was recently released for lubrication of slip yoke splines to repair a condition of a bump feel or clunk noise at stop or from launch on the vehicles equipped with 4L60 Automatic Transmission (RPO M30) and 2WD. Please see Bulletin # 09-04-17-002C for details. Do not use the new grease for lubrication of slip yoke splines on 4WD vehicles. The output shaft in a 4WD transfer case does not have a grease retainer to keep the grease from migrating into the transfer case and mixing with the fluid inside. The new grease is not compatible with the Automatic Transmission fluid used in the transfer case and can cause damage if mixed. Lubricate the splines on 4WD vehicles with Automatic Transmission Fluid, P/N 88861003 (in Canada, 88861004). Please refer to Bulletin # 09-04-21-003B for repairing the bump feel or clunk noise condition on 4WD vehicles.

Do not grease the yoke on 4x4. There is no grease retainer inside the tail end of the transfer case. Grease can leach into the transfer case and contaminate the fluid. Only ATF should be used on 4x4 2007 onwards.  

Seems Brian is either uninformed, or mistaken. I had a 1958 Corvette convertible that had a hard top also.

^^^ X2

That would drive me crazy. Try blocking access on your router to see if it is indeed caused by hooking onto the Wi-Fi.

X2

NGk does make the Delco plugs for these engines. Neighbor is WRONG, Mobile 1 filter is much better than the Delco.

If so, then I won't be buying GM for my next truck.

LOL, hell I went further than that on my original spark plugs on my 01. That still ain't high mileage. To the moon and back plus a couple of trips around the globe is where that club starts.

The "new" site has issues with the search feature at times. On the left side of the search bar there is a drop down that says "this forum". I check the box above it that says "all content". Makes for a little more searching on my side, but it does find most of what I need. I call it the new site because they upgraded the software about 4 months ago.

There a numerous threads on the exact same topic. The search bar is on the top right side and just about any question can be answered from there. Here is the first one I found and it has several others buried inside of it.

Make that 3 of us recommending an old one. Let me add one to look at -Snapper. If you can find an old one with the handle bar steering wheel and a 33 deck, grab it. If you can't find old iron, buy a Murray from Wal-mart. Run it for 5 or so years and toss it. They are cheap, disposable mowers.

PVC valve will NOT cause low oil pressure. Using synthetic oil will not cause oil pressure gauges to read a lower oil pressure than is actually present. Delco filters are not what they use to be, run a good filter like the Mobil 1. If the dealer did use 5w-20 oil by mistake, your oil pressure would be reduced.