I had to re do my head gaskets after my black onyx gaskets failed 6000 miles after I installed them BUY OEM IF YOU ARE STUDDING YOUR TRUCK
. I had my heads checked and are straight within .003" and the gaskets still blew. You can see where the water jackets were being pressurized.
Anyway, I did that over the weekend as you can see in the pictures. Instead of taking the cab off, I remove my front end and stand in the engine bay. It's like working on a stand! Not bad at all. I'm also pround to say that I fixed my terrible 3-5 shift flare with a GoGo Direct solenoid! The truck shifts much better now. I also changed the internal and external filters and added 9 quarts of fresh Mercon SP. Drove the truck for a good 70 miles to break the new gaskets in and all was well. Until......
Last night I was getting off the freeway and sometimes I put it in Tow/Haul mode to slow the truck down without using the brakes (just something I do sometimes) and I felt a jolt in the tranmission, a clunk if you will, and it stopped engine braking. Pulled up to a red light, when it turned green I took off and I realize the truck is stuck in either 3rd or 5th gear, it was hard to tell. So I put it back in Tow/Haul mode thinking it was just a hiccup, and then the Tow/Haul light starts flashing! Got to my desitnation, came back out about an hour later, unplugged the batteries and turned on the headlights for a few minutes. Start it up, same thing. Drove it all the way home (15 miles) in the gear it was stuck in and Tow/Haul flashed the whole way home. I was stressing out bad but luckily I know a guy with a dealership scanner so this morning I had him come by and pull the tranny codes. NOTHING. I was confused. I did have a code for brake input switch failure and the truck won't go into 4x4 low... I wonder if that is related. Either way, We decide to drive it until tow haul comes on and try scanning it again. Pull out of the driveway, the thing shifts like a dream and nothing is wrong. I WAS LIKE WTF@#$^!#$!^$
Drove it into work and it's still ok.. Has anyone had this happen? I'm scared it's going to happen again. Other than that its driving like a brand new truck.