B&M 70380 ShiftPlus Electronic Shift Improver

First off I never leave reviews even though I ought to sometimes. I installed this in a 94 Silverado with a 350. 94 Silverados came from the factory with a Corvette servo so it already shifted harder and better than most other years. With the shift plus added to that it woke up the transmission to the point where it drives like a completely different truck. With a good exhaust system and this people will think you have spent thousands of dollars on your drivetrain just hearing go through the gears driving normally. I've had built transmissions in trucks where it would spin hitting second and bark tires hitting third leaving it in drive. This thing is a bargain for what your getting. I read a review that said he noticed no difference. That would be impossible in my opinion. He must've had a bad connection or he got a lemon. It is sorta hard to get your hand in there to unplug harness from the computer because it's the one behind glove box and all the way to the right. It still wasn't that big of a deal though. If you don't have one get one if you're wanting to sure enough make it bang through the gears add a Corvette servo because I believe you can install those on any GM product this will work with. By the way my truck has got 151000 miles on it. It was 17 years old with 34000 miles when I inherited it. My only regret is not installing this thing sooner because it will definitely make the transmission last much longer since it won't be slipping the clutches so much

I installed this on my 99’ OBS suburban and it definitely makes shifting a lot quicker or firmer. I haven’t not had the chance to pull my 22ft camper trailer yet to feel the shift change it is supposed to provide but I honestly feel it will help the trans last a lot longer along with regular maintenance of course. My review is based on the kit install with a completely new GM 4L60e with only 3,xxx miles on it so far. Great product without having to install a shift kit by dropping the trans. Also, I do drive around town and on the highways on level 1 and feels a lot better than stock but not as jarring as a full shift kit like I have in my 1989 4L80e rebuilt.. hope this review helps! Will come back to update my review in a few months as I very recently installed this product.

I installed the B&M Shift Improver a little over a week ago on my 1994 Chevy K1500 pickup. My transmission is the 4L60E. Installing the unit was relatively easy. I removed the inside of the glove box to get to the trucks computer, popped a couple of clips holding it down and spliced into the 2 wires that were indicated on the easy to follow instructions. I soldered that connection and I didn't use the plastic pinch clips that came with the kit. The kit also came with 2 zip ties that made running the wires under the dash a breeze. The whole procedure, at a leisurely pace, took about an hour.The shift from 1st to 2nd is a solid, firm shift now in both "heavy duty" and "street/strip" positions but the shift from 2nd to 3rd and 3rd to 4th were not as dramatic. Although there is a good improvement in the tranny's ability to hold or grip throughout the entire range.I paid a little over $30 and I'm very happy with the Shift Improver for the money spent but I'd like a firmer shift from 2-3 and 3-4 so I'm going to add a Corvette servo to help that. I could have just used the aftermarket servo and gotten what I wanted except for the ability to control the shift process from the cab by just pushing a button. Once I install the servo I will lose that convenience and I don't know how it will work with the B&M Shift Improver. I guess I will find out as soon as the new servo arrives.Overall, for $30 and an hour's easy labor, I give the B&M Shift Improver 2 thumbs up and 4 out of 5 stars.

Easy to install and I can't believe the result , the shifts are snappy and through all gears solved my sluggish shift in 3rd and 4th gear, best product ever thanks !

Installed it on a 97 gmc van so getting to the computer was out of the question. Wired it in at the transmission plug. I didn't trust the crimp on connectors so I soldered the wires for cheap insurance.

Works exactly like it should! I installed this on my 2006 chevy cobalt and it's really fun to have. You can really feel the car shift gears! My only complaint is the provided wire taps did not work well. One of them broke while trying to install, and the other didn't make contact so it did not work. My solution was to directly tap into the wires and just wrap then together and cover with electrical tape.For those of you who may be wondering: you can increase the stage level while the car is on, but must turn off the car and change the switch position in order to go down a stage. For example, if you start the car with it in off position, you can change to stage 1 while the car is still running and it will work. If you start the car in stage 1 and you want to switch it off, you have to turn off the car for it to take affect.

It does what it's supposed to but not as smooth as I thought it would be it shifts little harder than I would have thought. By putting in number one works fine for towing.

i installed this yesterday in about 10 minutes. it does work for the 2001-up but Chevy changed the transmission in 01 to a more "advanced electronic" 4l60-E. so you cant switch the stages on the b&m kit on-the-fly. you have to shut down and restart the engine. it doesnt bother me as it would others. my test drive was in the rain, and around corners stage 2 would put me into a drift from 1st to 2nd. stage 2 is too harsh for a stock tranny. stage 1 is a nice firm shift and i can still get it to chirp into 2nd. to install on a 2001 all of the instructions indicating the color of the cpu are wrong. it installs on the bottom harness of the cpu which when you unbolt it, is red. Product RecommendedAfter having it for a while, my stock transmission has started slipping when used in stage 1. BEWARE

I was impressed with ease of installation. It works as promised. The free shipping was quick.