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I have a 2005 C6 with the LS2. Completely stock. 75,000 miles.
I have been getting occasional p2135 codes. Throttle position sensor 1-2 correlation. It happens during cruising speeds. This happens with the stock gm throttle body.
I have tried 2 different Dorman replacements. Both of the replacements worked just fine with idle and cruising speeds. But once you try to accelerate quickly it throws the same code p2135. I would say it’s like when you give it over 25% throttle.
Getting frustrated because you can only find used silver bodies or new.
I also would rather have something new as opposed to a used one that may do the same thing eventually.
What good are the replacement if they all do this and what is the options for someone just wanting to bolt something on?
Both the Dorman and ported body did the same when installed. They triggered the code at similar times.
As stated prior the stock gm does not, just intermittent at cruise.
I had better confidence in the one you linked but same result. I am currently working on a replacement from them possibly a gm instead of aftermarket. Great costumer service with them.
Howdy! I sell used GM silver blade throttle bodies pretty regularly on eBay. GM/ Delco discontinued them years ago; there is no new OEM.
If there is no GM stamp, it is repro and has different TPS units- their offsets and ranges are different than OEM. This is where the codes pop up. All repros are identical internally but even their TPS settings vary widely from unit to unit. Soler sells repros- essentially a marked up Dorman.
GM silver blades are pretty robust units and are the best path forward. Chances are, your throttle body is fine and just needs the TPS brush cleaned. Shoot me a PM if you prefer a replacement.
I have done the throttle relearn each time I swap. I have no problem getting the car to idle and lady drive. But with these aftermarket’s I can’t do a hard acceleration for a highway ramp. Unless there is some excess of mileage to learn the higher limits of the throttle?
Howdy! I sell used GM silver blade throttle bodies pretty regularly on eBay. GM/ Delco discontinued them years ago; there is no new OEM.
If there is no GM stamp, it is repro and has different TPS units- their offsets and ranges are different than OEM. This is where the codes pop up. All repros are identical internally but even their TPS settings vary widely from unit to unit. Soler sells repros- essentially a marked up Dorman.
GM silver blades are pretty robust units and are the best path forward. Chances are, your throttle body is fine and just needs the TPS brush cleaned. Shoot me a PM if you prefer a replacement.
ive been going into reduced engine power a lot recently with my recently installed (March) silverblade on my cam 01 c5 z06. It’s not a tune issue, car drives/idles great until it randomly limps on me, more recently while cruising on the freeway every 25-100 miles now. I bought it off eBay and I think it’s a dud, from all the research I’ve done it makes sense the tb is my issue. Only codes are p1220 and p1221. There’s a ported Soler on marketplace with 6k miles on it, how do I know it’s a real gm and not a Dorman? And before I invest hundreds on another tb, does it sound like it is the issue putting my car into reduced engine power? It’s fine when I turn it on and off until it happens again. Never had the issue before doing all the other mods, battery is fine, voltage good, grounds good, etc.
There are a few visual differences but all GM Silver Blades will have a GM stamp and part number similar to this. Those errors are tough because there is quite a bit in that circuit. TAC, pedal, wiring, and adapter harness are all other things to consider.
Thanks, it does have a gm stamp next to the part number. Reason I don’t think it’s tac or wiring is because the issue was introduced with adding the throttle body. I’m at 150k miles, so I pretty much know my car and its bugs/quirks in and out. It’s also a SoCal car so zero rust and wires look great even in the engine bay. Only wiring issue I’ve ever had was the ignition switch needing a cleaning. My thing is if the harness was faulty, it would never work if something was wired incorrectly. It’s an increasingly intermittent issue, which means something is failing. I am going to open up the motor side and try cleaning it, since I’ll probably spend the money for the
slightly used Ported silverblade with 6k miles on it anyways next week. Worst case scenario I lose some money reselling it
Problem solved. A new genuine GM part resolved the issues. Thanks to Soler Performance for the outstanding service.
I’m also having problems with code P2135 that just started popping up. My car is also a stock 2005 LS2 that only has around 30k in miles so I doubt it’s the wiring. After researching it’s a GM problem across multiple vehicles. Wanted to see if you’re still having issues with the P2135 code after reinstalling with Soler Performance? I’m looking through how it works with them. Kind of confusing. Did you purchase new or send your TB into them? https://www.solerengineering.com/gen...790-95#reviews
I’m also having problems with code P2135 that just started popping up. My car is also a stock 2005 LS2 that only has around 30k in miles so I doubt it’s the wiring. After researching it’s a GM problem across multiple vehicles. Wanted to see if you’re still having issues with the P2135 code after reinstalling with Soler Performance? I’m looking through how it works with them. Kind of confusing. Did you purchase new or send your TB into them? https://www.solerengineering.com/gen...790-95#reviews
I haven’t had a single issue since getting the Soler Performance, but I only got it because it was almost half off. $700 is pretty crazy for me at least, but I guess that’s what they run unfortunately. What’s crazy is it says out of stock too, but on eBay there’s a 95mm Ported soler for ~$670, so at least you got some more power and throttle response with the expensive fix bill, but if your car does go into limp mode randomly, then the tb is most likely the issue
I’m also having problems with code P2135 that just started popping up. My car is also a stock 2005 LS2 that only has around 30k in miles so I doubt it’s the wiring. After researching it’s a GM problem across multiple vehicles. Wanted to see if you’re still having issues with the P2135 code after reinstalling with Soler Performance? I’m looking through how it works with them. Kind of confusing. Did you purchase new or send your TB into them? https://www.solerengineering.com/gen...790-95#reviews
ahh nevermind, with the c6 soler has a 95mm ported gold blade option with an adapter harness for $435, that is definitely the best option. Also you can’t send in a faulty one, once the tb goes bad it’s a piece of trash which is really dumb. Hopefully this link works to the tb you need. I have a built c5 z06 with an adapter harness so I couldn’t use the gold adapter and needed a silver blade.
ahh nevermind, with the c6 soler has a 95mm ported gold blade option with an adapter harness for $435, that is definitely the best option. Also you can’t send in a faulty one, once the tb goes bad it’s a piece of trash which is really dumb. Hopefully this link works to the tb you need. I have a built c5 z06 with an adapter harness so I couldn’t use the gold adapter and needed a silver blade.
That’s a really great deal if you got the performance $600 solerengineering for half off. I agree after researching that this is a known common problem that GM vehicles have with the P2135 code and replacing the TB is the fix for the problem. Hopefully that’s all it is. 🤞I was overwhelmed with the amount of possibilities it could be because so many things are involved with causing a P2135 code. Some have wiring issues but primarily It’s a bad throttle-body.
Unfortunately, GM stop making the throttle bodies. Dorman Throttle bodies from my understanding aren’t good and cost about the same. Corvette central sells a reproduction Throttle-body. Not really sure what that means. Thankfully solerengineering has good customer service and explained that I can’t send my old one in. I was hoping to sell it for parts but it sounds like no one will want it lol. I did ask about the one they have listed on Amazon,
they said its a standard OEM replacement. What threw me off was they had their logo on the blade. For around the same price you can upgrade to a performance version so that’s a no brainer. The one you posted is the Throttle-body I plan on purchasing today. I’ll post up my results after installing.
I may be interested in the bad one you have.I would like a non-working one for some testing and experimenting.
Yo I have a ported faulty ls2 silver blade if you want. It drove but would go in limp mode once every 10-20 miles randomly, and would fix itself by turning car on/off. lmk what you are willing to pay
LS2 throttle body troubles
