^Does anyone know who this guy is? He must be a new member or something huh!

 

I have no idea who that person is.

I think a more fitting username for them would be "v8swapcoming2017"

 

Imma smack both of you. lol

I know imma try to get on here more often. Promise.

 

Fixed pesky P0452 code. CEL has been on for months... Blazer now due for NYS inspection, so I had to attack it.

After checking for the 5V reference voltage at connector, replaced the pressure sensor. The part was not expensive, so why not? Despite instructions to the contrary, it's fairly easy to remove the sensor without dropping the tank. Drop the spare tire, crawl up in there, and use a mirror to see the sensor and get oriented. Code came right back on 2nd startup...

Further diagnostic instructions involve reading live data, which I don't have a scannner for, but decided to keep trying. The code coming right back indicated (to me) a wiring fault, so I looked for defects in the harness, following it all the way under the truck and into the engine compartment. Didn't see anything unusual...

Next was to check for continuity from the green signal wire at sensor connector to the VCM. Easier said than done... Which wire is it? Diagrams found here show the wire terminates at pin 45 of blue connector, but that pin was unused on my vehicle. Using a jerry-rigged ohmmeter with extensions on the probes. I checked for continuity to every green wire... Nada! I then checked every pin on both connectors in case wire changed color at a splice... Nada again!

Searching online, I found a pinout from a different GM vehicle which used the "411" computer, same as in my truck. Connection #890 to pressure sensor terminated at pin 65 of red connector. Looked there and wire was green. Checked again for continuity and found none... OK, here goes...

I stripped off a bit of insulation at both ends of the wire and made a temporary connection, running wire around the outside of truck. Started it up and CEL went out! Tried a few more times and light stayed out, so I did my best to run wire neatly, taping it to outside of harness through engine compartment and under truck to sensor connector. Soldered both ends and taped them up... Light has been off since Monday, drove around 200 miles in the interim... Gotta get it inspected quick.

 

I have a 2001 Chevy Blazer, and I want to do a 3" body lift to it so I can put bigger tires on it.
I'm going to use the stock rims that came with my Blazer, will I be able to fit
31X10.50R15Lt on my blazer with the same rims after the body lift with no issues?
Need anyone and everyones advice! Thanks.

 

Ahh the joys of OBD-II ... at least you were able to fix it.

I'll take points & carburetor adjustments any day over this crap.

 

Yeah, especially since the engine was running fine... I'll never get that afternoon back... and yeah, I miss being able to fine-tune your timing and such. We don't need no stinkin' computer!

 

Hear hear!

 

I installed a new window regulator in my Coly. Wasn't anything on a blazer, but I did something so I'm putting it here.

 

We dont want to hear it than! LOL JK!

Was it a fun job?


I did nothing on the TB today besides make people uncomfortable listening to extremely bass heavy rap with all 4 windows down