Improving Shifting In An ’06 GMC Sierra Without Removing The Transmission – Trucks! S15, E14 – Car Mod Pros Portal

Trucks! is adding a kit to improve the shifting in the 2006 GMC Sierra, and this time, we’re not taking the transmission out of the truck! Then it’s a new coat of paint and racing stripes for Rolling Thunder.

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PARTS USED IN THIS EPISODE:

TCI Automotive: Shift Kit, Trans-Scat, Chevy, GMC, 4L60E, LT1, LS1, Each
More Info: https://pntv.us/pb_pt_8059

Kanati: Light Truck Radial, Kanati Mud Hog, 37 x 12.50/20

Matco Tools: 6 Piece Snap Ring Pliers Set

Miller Electric Manufacturing Co.: Miller Digital Elite Series Welding Helmets

Power Probe: Power Probe Hook is a fast and efficient electrical testing tool designed for the modern automotive technician. It works right along with you while testing electrical circuits by automatically switching to the appropriate tooL

The Eastwood Company: Eastwood 2K Aero-Spray High-Gloss Clear

The Eastwood Company: Eastwood Dead Rat Flat Black Kit

The Industrial Depot: Industrial Depot – Fasteners, Hardware, and Shop Supplies

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44 thoughts on “Improving Shifting In An ’06 GMC Sierra Without Removing The Transmission – Trucks! S15, E14”
  1. You helped me decide whether I want to drop the valve body just to do the pinless piston in the 3-4 accumulator. And whether check balls will fall out from the tranny above (the horror). With all your upgrades, you chose to keep the 3 plastic accumulator pistons unchanged. I really don't wanna drop the valve body, cause I'm scared of going that deep. Would it be dumb to upgrade only the 1-2 and FWD accumulator pistons?

  2. I know in this video is 2 years old but I need to say something. They used the wrong valve body and case gaskets. and the separator Plate is a round hole square hole and the gaskets they used are a around hole round hole. the lockup will not work correctly and eventually cooked the transmission. And the icing on the cake they use a shallow filter on a deep pan. Nice way to starve it of fluid and send it off to a quick death.

  3. And if you don't want to get your hands dirty you can use a Diablo tuner and just add shift psi and put your shift points exactly where you want them. Im not saying it will do your 4L60E any favors but you can very easily improve your E.T. by doing this.

  4. Some observations; First he removes the magnet from the pan after saying what a great innovation it is, noting that he will put the drain plug in its place. Hmm is the drain plug magnetic? I guess it really doesn't matter because he places the drain plug several inches from the magnets location. The magnet should never be removed unless it has deteriorated to the point it needs to be replaced. Second, the pistons are both plastic, and should always be replaced with aluminum pistons. The center hole in the piston wears and gets oblong. causing a leak and pressure loss. Third, you installed the shallow pan filter which will not pickup fluid like the deep pan filter you took off and should have replaced. This filter also may use a different plastic round retainer that will not fit the smaller filter causing it to fall of and may cause catastrophic damage to the unit.

  5. Replace that crappy plastic piston in that 4L60E! Sonnex makes an aluminum replacement for cheap and it has a double O-ring for batter sealing and stability. After all, you're trying to improve longevity and plastic has no business in that heat-soak environment. I really liked the end result of that flat black paint job.

  6. Richard from Precision Transmission should make a reaction video for this. He'd just about have a heart attack, starting with that cheap Chinese drain plug that leaves like 2 liters and all the debris in the pan.

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