depending on what year 4L80E you have, Sonnax makes a kit that does this. I have one in my GMT800 suburban, it works well enough. I bought it because I needed a rebuilt valve body anyway though, and that setup also gives you some bonus holding power. Figured it couldn't hurt on a cammed 8.1 that...
Still for sale. Just a heads up, I have had several people ask about shipping. roughly halfway across the country was going to be around $500, these consoles are pretty heavy with the steel internal frame and the subwoofer hardware.
Shocks won't fix your problem. You can adjust the torsion bars on your truck to get the ride height back.
For a 2WD truck, there are stiffer coil springs available.
If your cam/crank correlation is off (worn timing chain or gears, distributor gear wear, etc) you might not trigger the fault code, but the spark will be jumping a huge gap in the distributor because the rotor is already moving away from the poles as the spark tries to fire. I killed several...
There are setups out there that use sequential throttle plates. I'm not sure if GM does it. there's typically a smaller throttle plate and then a linkage to a larger throttle plate. When you crack a single large throttle plate, the open cross sectional area jumps pretty quickly which can make...