P0232, P023F Codes
05-07-2018, 11:39 AM
#11
TECH Junkie
Forgot the codes maybe in my old thread but my truck sputtered and died. They replaced the driver and it smoked it because of a bad fuel pump. Then replaced the pump and driver. No problem since.
05-07-2018, 02:51 PM
#12
I'll have to go look for that, I'm extremely interested in any fixes for the 2014 trucks as I just got one and I'm a tech and I want to know all this stuff. I haven't had enough of them in the shop yet to have to mess with much except a/c condensers.
05-07-2018, 02:58 PM
#13
Here's your post
Odd thing is, his runs and yours didn't.
His fuel pump is likely fine being that it runs.
However, I have seen quite a few electric motors (mostly radiator cooling fans and blower motors in dashes) pull excess amperage on circuits and cause burned terminals in relays and burned connectors, but that's usually when they are really old and on their way out. Usually a fuel pump works or doesn't. So I'm leaning toward his issue being the fuel pump control module.
Got my truck home from the dealer and found I hadn't downloaded HP's scanner only the Editor so I scanned it for the first time. Got this: P0232 Fuel Pump secondary circuit high. P023F Fuel Pump secondary circuit/ open. P0700 Transmission control system (mil request). U0100 Communication with ECM/PCM A. No fuses or relay bad so...?
Odd thing is, his runs and yours didn't.
His fuel pump is likely fine being that it runs.
However, I have seen quite a few electric motors (mostly radiator cooling fans and blower motors in dashes) pull excess amperage on circuits and cause burned terminals in relays and burned connectors, but that's usually when they are really old and on their way out. Usually a fuel pump works or doesn't. So I'm leaning toward his issue being the fuel pump control module.
05-18-2018, 03:17 PM
#17
Sucks it was expensive, but taking guesses at it usually ends up more expensive so it may have cost less just taking it to them and getting it over with.
Still it's pretty interesting it was a bad pump, that still worked. Must have something to do with how much draw the circuit was seeing or something along those lines.
12-11-2018, 09:40 PM
#18
Teching In
Join Date: Mar 2013
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the feedback, I have a 14 truck and this could be useful someday.
Sucks it was expensive, but taking guesses at it usually ends up more expensive so it may have cost less just taking it to them and getting it over with.
Still it's pretty interesting it was a bad pump, that still worked. Must have something to do with how much draw the circuit was seeing or something along those lines.
Sucks it was expensive, but taking guesses at it usually ends up more expensive so it may have cost less just taking it to them and getting it over with.
Still it's pretty interesting it was a bad pump, that still worked. Must have something to do with how much draw the circuit was seeing or something along those lines.
It's a known issue, refer to TSB PI1215A (found here: https://gm.oemdtc.com/TSB/SB-10070946-9133.pdf ).
I'm going to fight the good fight at the dealer, but the sheer fact that this is a KNOWN issue is cause for anger that the dealer nailed you for $900 for a freaking fuel pump (that easily should have last 100,000 miles). Add to the fact that the TSB basically states this is a design issue.....they should extend at a minimum some good will.
Unbelievable.
12-12-2018, 07:34 PM
#19
Teching In
Join Date: Mar 2013
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Just got back from the dealer. They are replacing the fuel control module (i.e. fuel pump) AND the controller.
Cost? ZERO. This is a "Certified Pre-owned" warrantied vehicle with the 100,000 limited powertrain warranty. Of course I was able to find very little actual details of the what the warranty did or did not cover. Can't complain, they have to order the parts (truck runs so I am OK with that) and will R&R in about a week.
Overall: Always look for a TSB, especially on a GM. Found a more relevant TSB as well: 17NA335
Hope this helps the next person who runs into the "Professional Grade" engineering that goes into these trucks (chuckle). Shouldn't have fuel pump failures on a non-rust belt 81,000 mile SUV. I digress.
Cost? ZERO. This is a "Certified Pre-owned" warrantied vehicle with the 100,000 limited powertrain warranty. Of course I was able to find very little actual details of the what the warranty did or did not cover. Can't complain, they have to order the parts (truck runs so I am OK with that) and will R&R in about a week.
Overall: Always look for a TSB, especially on a GM. Found a more relevant TSB as well: 17NA335
Hope this helps the next person who runs into the "Professional Grade" engineering that goes into these trucks (chuckle). Shouldn't have fuel pump failures on a non-rust belt 81,000 mile SUV. I digress.