Chevrolet Cruze Forums banner
1 - 14 of 14 Posts

·
Registered
Joined
·
70 Posts
Discussion Starter · #1 ·
Got these two codes this week while on hiway. Check engine lite, def light, countdown came on Took to dealer today since it was on count down to slow limp mode. Right now dealer says it is glow plug module. Had to order part, so hope to get back tomorrow. Hope it is fix. Looking more at delete kit as once again it would have saved me a bunch of money
 

·
Registered
Joined
·
1,356 Posts
Those codes are usually an indication for the Reductant Tank Heater failure that is all to common on these cars. I have heard previously that the Glow Plug Module does in fact provide power to the Reductant Tank Heater so it could be the problem. But, someone else with this same diagnosis ended up needing a new Tank and not the Glow Plug Module.

I hope they are correct in their diagnosis.
Let us know what they do find and fix.

A delete would definitely solve all of your emissions related troubles.
 

·
Registered
Joined
·
49 Posts
I just had these on my '15 CTD. It was in fact the Def tank reductant heater element. I guess they will know if the Def heater is bad when they replace the module and it still throws the codes? Keep us posted.
 

·
Registered
Joined
·
70 Posts
Discussion Starter · #4 ·
When I took car in I told them my scan said def tank reluctant heater and that had already been replaced once 2 yrs ago. They called me and said it was glow plug module. They put module in and had difficult time clearing code causing limp mode. Got another call saying it's reductant heater and tank and want another $400 + in parts. Told them to button it up I'll put that money to a delete kit
 

·
Registered
Joined
·
33 Posts
When I took car in I told them my scan said def tank reluctant heater and that had already been replaced once 2 yrs ago. They called me and said it was glow plug module. They put module in and had difficult time clearing code causing limp mode. Got another call saying it's reductant heater and tank and want another $400 + in parts. Told them to button it up I'll put that money to a delete kit
Gotta love dealerships that troubleshoot by replacing parts on your dime...
 

·
Registered
Joined
·
70 Posts
Discussion Starter · #7 ·
207000 miles. Way over. Been over warranty with every issue GM has had with emissions. Reason I am going delete
 

·
Premium Member
2014 Cruze Diesel, 2007 Cobalt, 1981 Camaro Z28, 2017 Volt
Joined
·
5,691 Posts
Is that true for 2014 models too? The emissions systems on this car have been a nightmare.
For the tank and heater, as well as the Particulate sensor, yes.
 

·
Registered
Joined
·
533 Posts
and the nox sensor that was impossible for gm to fix for over a year.
did they fix the NOX Sensor, or did they adjust the control limits for the sensor?
 

·
Registered
Joined
·
2,972 Posts
did they fix the NOX Sensor, or did they adjust the control limits for the sensor?
sent out a letter aboot special coverage or recall for it, but said in the letter, oh hai, wait til we figure out how to fix it...then a year later had a new tune and you got new sensor, dont recall if it was same sensor or upgraded
 

·
Premium Member
Joined
·
2,696 Posts
Just to add/clarify...not ALL reductant (DEF) tank problems are warranted under Special Coverage 29400.

In 2018 @ 99K miles, I had a P21AB diagnosed as “Reductant Tank Level Sensor Fault”. Tech verified “Level Sensor failed, necessary to replace reservoir to correct.”

I inquired about SC29400 and was told that only covered failure of the DEF heater so I would be on the hook for repair cost.

I didn’t write down the estimated repair quote but seem to recall it was in the neighborhood of $600. Paid $122 for diagnosis and said thank you.
 
1 - 14 of 14 Posts
Top