I have a 2017 GMC Sierra Z71, 5.3, 6 Spd Auto, 68K mi. Throwing codes P219B and P2101. Suspect O2 sensor for 1 and TSP for second. Figure I need to correct the P2101 first. I'm going to clean the throttle body and MAF, as per your video on spray cleaners. I need to know the proper relearn procedure for the vehicle, and if there is any other issues that I need to consider.
Thank you for all your videos and WELCOME to Clarksville. Might see you around sometime.
Perform the following relearn procedure for
the on-board computer to adjust to the new
idle position on the electronic throttle body.
1. Start and run the engine in
PARK for 3 minutes.
2. Turn the engine OFF for a
minimum of 60 seconds.
3. Start the engine and run for
another 3 minutes.
4. Engine should idle normally after 3 minutes.
After having performed the relearn procedure
and the engine still does not run within
normal idle speed, it will be necessary to
drive the vehicle above 45 mph
including several decelerations. Also
ensure that after driving the vehicle, let the
engine idle for a minimum of 5 minutes.
If the engine has returned to normal idle
speed, the relearn procedure is completed.
If the idle speed is still erratic or incorrect,
restart idle relearn procedure.
Sometimes it doesn't work. If thats the case you need a scan tool with the ability to reset/relearn. Which means finding a mechanic who can do it for you.
Hi. Thanks for your response. I did a cleaning of the throttle body and then preformed that relearned. It runs no different from before I started. I've a new throttle body on order that should be here in two days., once I replace it I'll try again. In the meantime, I've got some numbers from the live data on my scanner if you'd care to interpret them for me?
Yeah I'm a little curious about them. I'll tell you what they mean
Cool. A couple more details: The vehicle seemed to run fine during the trip. It did go into "Low Power" the next day, I just shut it off because I had other things to do. Next day I pulled the codes, than erased them and took it on a drive (only 2 drive cycles) with my scanner connected for live data. Scanner did not save the data. Following day I cleaned the throttle body. Inspected the MAF but it didn't LOOK dirty so I didn't clean it. Reassembled and did the relearn. MIL is currently not on, but the codes are saved as PERMANENT". Slight stumble on acceleration.
Live Data: RPM fluctuate 534-560 idle
TPS: 13.3% idle
Rel TPS: 2.7% idle
TPS B: 12.9%
ACC Pedal D: 20.4%
ACC Pedal E: 3.9%
O2S B1 S1 Fluctuate .09-.78 V
O2S B1 S2 Steady .74 V
O2S B2 S1 Fluctuate .095-.805 V
O2S B2 S2 Fluctuate .625-.72
ECU VOLT 14.6
I can get others if needed. I've ordered a Hitatchi Throttle Body with TPS sensor, gasket and all 4 O2 sensors. Rockauto.com. Thanks.
I don't have my any of my gear with me so I cannot look up proper valve but The only things that looks off from this data is your tps is high Also your pedal percentages are high as well. That could mean your pedal position sensor is bad or the tps is bad . It is possible the ECM is bad. I think these cars had some issues with that. .You have a couple of options. Replace the throttle body and hope it works or have someone with a scan tool do the reset and hope for the best. If not you might have to find a mechanic to use a high end scanner to look over everything. . When I get home later I can look more into it
Ok. I'll wait for you to get home. I read your article about the 3 cars you got in the shop with throttle body issues. I'm going to get the manual out and see if there is a fuse for the ECM. I don't want to disconnect the battery at this point. Based on whatever info that you gather when you get home,,,,I may pull the fuse and see if that resets it. Unless that's a bad idea. I can come up with all KINDS of bad ideas.
Okay so I cannot pull up any data for any gmc vehicle using my gear. I don't know why that is happening. I did reach out to a friend who knows more about gmc vehicles then me. He said it most likely has to be reset. All the numbers are off but it still drives and runs with out major issues but it's possible the tac (throttle actuator control) or pedal sensor are bad.. Since he ordered the throttle he might as well replace and see what happens. He might need mechanic to do the reset for him. Then go from there. That is what he said. It's times like this I wish I had the car in person and a little to look it over. So much easier to diagnose and fix.
Well I'm in Clarksville, TN where Scotty Kilmer is, you could just run right over! LOL! I did take it on a 40 mile drive today, 4 drive cycles. Several minute breaks in between each. Not enough to cool down. MIL did not come on. Permanent codes are no longer stored. If I could find what the operating parameters are supposed to be, I could make a semi-intelligent decision. I've tried googling, but I may not be using the correct search terms. Thanks for taking the time to look into it.
I'm in NJ don't have that much free time to go down there lol. I couldn't find them either. If my all data and other tech was working I would have it for you. Unfortunately it's not working at all now. It has to do with something on my end and can't figure out what it is.
Well maybe you'll think about me once you get it working. If not, all is good. I'll make another post and ask if anyone else on here does. Thanks a bunch and eat some scrapple for me. All I can get here is Pennsylvania Dutch. It's decent but not the same. Grew up on the DelMarVa penisula. Take care!
Well I cleaned the throttle body as shown in a Scotty video. Code would not clear, it was listed as "permanent", even though the MIL went off after I tried to clear with the scanner. I did the relearn procedure, took it out for several drive cycles over a 2 day timeframe. Rescanned and the codes are gone. Thanks for your reply, and thanks to Mr. Kilmer for the videos.