P062F is "Control Module Long Term Memory Performance" — the module's non-volatile memory, its EEPROM, failed a self-check. The single most useful thing GM says about it is a warning: the same code can be stored in the transmission module, the engine module or the fuel pump module, and you have to establish which one before you diagnose or repair anything. GM's remedy where it is documented is reprogramming — there is no part number attached to it.
Jump to a section: What P062F means · Which module set it — the first question · The two-part code form · Affected GMC vehicles · Symptoms · How it's diagnosed · Parts and labor · Service bulletin · What other pages get wrong · FAQ
What P062F Means
Control modules keep certain information in memory that has to survive the ignition being switched off — adaptations, learned values, configuration. That is held in non-volatile memory, commonly EEPROM. P062F is what a module logs when a routine check of that memory doesn't return what it should.
It is a self-diagnostic code rather than a symptom of something mechanical. Nothing is leaking, worn or out of adjustment. A module has reported that its own memory did not verify.
That is also why the documented remedy is software rather than hardware. GM's service information for these codes directs the technician to reprogram the module and recheck.
Which Module Set It — the First Question
GM's document PIP4653E is titled for P062F "stored in the TCM," but its central warning is that the location cannot be assumed:
The same DTCs "can also be set in the ECM or FPCM" — the engine control module or the fuel pump control module.
GM requires the setting module to be identified before diagnosis or repair begins, and specifies the tooling for doing it: a Tech 2, or GDS2 for certain 2010 through 2015 models.
This matters practically because the three modules are in different places, cost different amounts and are programmed differently. A generic code reader will show you P062F and give you no way to tell which of the three reported it — which means it gives you nothing you can act on.
The Two-Part Code Form: P062F-XX
No GM-documented sub-types were found for P062F. The GM documents naming this code write it as a bare five-character DTC. Sub-type tables published elsewhere — the familiar 32 rows from -00 to -1F — are generated automatically for every code on those sites and carry no manufacturer attribution.
Affected GMC Vehicles
PIP4653E's applicability is gated by transmission RPO code, not just by model and year. The GMC coverage is:
| Vehicle | Years |
|---|---|
| GMC Acadia | 2007–2014 |
| GMC Sierra and Sierra Denali | 2008–2015 |
| GMC Yukon, Yukon Denali, Yukon XL, Yukon Denali XL | 2008–2015 |
| GMC Terrain | 2010–2014 |
The transmission RPOs that gate it are, for the 6T30 / 6T40 / 6T45 / 6T50 / 6T70 / 6T75 family: MH2, MH4, MH6, MH7, MH8, MH9, MHC, MHH, MHJ, MHK, MNH and MY9. For the 6L45 / 6L50 / 6L80 / 6L90 family: MYA, MYB, MYC and MYD. If your vehicle's RPO is not on that list, the bulletin does not apply to it even if the model and year match.
Symptoms of P062F
GM documents exactly one, and we are not going to add to it:
"Customers may comment on a MIL."
That is the complete GM-sourced symptom list. The check engine light comes on. Nothing else.
Commonly published P062F symptoms that we could not source to any GM document, and therefore do not repeat as fact: harsh shifting, limp mode, slipping, and no-start. Those may occur on a vehicle that also has other faults, but GM does not attribute them to this code.
How P062F Is Diagnosed
Required tooling: a Tech 2, or GDS2 for certain 2010–2015 models. GM specifies this by name, because the whole first step of the procedure is determining which module reported the code — something a basic reader cannot do.
- Run the Diagnostic System Check — Vehicle.
- Identify the setting module. Transmission, engine or fuel pump control module. GM requires this before any diagnosis or repair. Do not assume the transmission because a bulletin title mentions it.
- Check whether the vehicle's transmission RPO falls within the bulletin's gated list.
- Record all other codes present. A module memory fault alongside a spread of communication or power faults suggests looking at supply and ground quality before the module.
- Follow the service information diagnostics for the code, which direct reprogramming the identified module and rechecking.
- Confirm the code does not return after the reprogram and a drive cycle.
Parts and Labor
There is no P062F part number. PIP4653E contains no part number and no labor operation code, because the documented remedy is reprogramming rather than replacement.
We are deliberately not listing a transmission control module part number on this page. Module part numbers are VIN and RPO specific, they require programming and setup after fitting, and GM's documented path here does not lead to one. Anyone quoting a module against a bare P062F should be asked which module set it and whether reprogramming was attempted first.
One specific caution worth stating, because the number circulates: TCM part 24043412 is a 2020 Cadillac CT5 part. It appears in a different GM document entirely and has no application to any GMC vehicle. It should not appear on a GMC page and it will not fit your truck.
| Item | Status |
|---|---|
| Parts required by PIP4653E | None — the remedy is reprogramming |
| Labor operation in PIP4653E | None published |
| Special coverage or warranty extension | None names P062F |
| NHTSA recall | None relates to P062F on the models checked |
The GM Document That Names P062F
| Document | Date | Subject | GMC coverage |
|---|---|---|---|
| PIP4653E | Jun 2014 | P062F stored in the TCM — and the warning that it can equally set in the ECM or FPCM. Remedy is reprogramming; no parts, no labor operation | Acadia 2007–2014; Sierra and Yukon models 2008–2015; Terrain 2010–2014, gated by transmission RPO |
That is the only GM document we located naming this code. There is no special coverage, no customer satisfaction programme and no NHTSA recall for it.
A note on researching this yourself: search-result titles for GM bulletins are unreliable. In the course of this work, roughly 20 of 35 NHTSA PDFs that surfaced under a code search contained zero occurrences of that code, and three documents returned under GM-looking titles turned out to belong to Kia and Isuzu. The PDF has to be opened.
What Other P062F Pages Get Wrong
- Confusing it with U062F. These differ by one character and are different codes in different families. P062F is a powertrain memory code with a documented GM remedy. U062F sits in the network communication range and GM's descriptor for it is not publicly published. If your tool showed "062F" and you are unsure of the prefix, re-read it.
- Assuming the transmission module. GM's own warning is that the code can equally be set by the engine or fuel pump control module, and that the setting module must be identified first.
- Symptom lists GM does not support — harsh shifting, slipping, limp mode, no-start. GM documents one symptom: a check engine light.
- Quoting a control module as the fix. GM's documented remedy is a reprogram. No part number appears in the bulletin at all.
Frequently Asked Questions
Does P062F mean I need a new transmission control module?
Not on the strength of this code alone. GM's documented remedy is to identify which module set it, reprogram that module, and recheck. GM's bulletin on this code contains no part number and no labor operation, because replacement is not the documented repair.
Is P062F the same as U062F?
No. They differ by the first character and belong to different code families. P062F is a powertrain code for control module long term memory performance, with a documented GM reprogramming remedy. U062F is in GM's network communication range and GM's published descriptor for it is not publicly available. Confirm which prefix your scan tool actually displayed.
Which module sets P062F?
Any of three, and that is GM's central warning about this code. It can be stored in the transmission control module, the engine control module or the fuel pump control module. GM requires the setting module to be identified with a Tech 2, or GDS2 on certain 2010–2015 models, before diagnosis or repair begins.
Can I drive with P062F?
GM documents one symptom for this code — a check engine light — and no drivability effect. That said, the light will mask any new fault that appears, and a module reporting a memory verification failure is worth investigating rather than ignoring.
What does the -00 mean in P062F-00?
No GM-documented sub-types exist for P062F. GM's documents write the code bare, so a -00 is the generic "no sub type information" value rather than a specific fault mode.
My Acadia has P062F. Does the bulletin apply?
Check the transmission RPO, not just the year. PIP4653E covers the 2007–2014 Acadia but is gated by transmission RPO — MH2, MH4, MH6, MH7, MH8, MH9, MHC, MHH, MHJ, MHK, MNH and MY9 for the 6T-family transmissions, and MYA, MYB, MYC and MYD for the 6L family. If yours is not listed, the bulletin does not apply.
Is there a recall or special coverage for P062F?
No. We searched NHTSA's bulletin archive and found no recall, no customer satisfaction programme and no special coverage naming this code.
Someone quoted me part 24043412 for this. Is that right?
Not for a GMC. That part number is a 2020 Cadillac CT5 transmission control module, appearing in a different GM document entirely. It has no application to any GMC vehicle covered by the P062F bulletin.
Shop the Parts Mentioned
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MOTOPOWER MP69033 OBD2 Scanner — $49, reads and clears P062F and rechecks I/M readiness after the repair.
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VDIAGTOOL BT500 Battery Tester — $57.53, tests battery health, cranking and charging on 6V/12V/24V systems with ripple analysis and a voltage waveform — rules out low system voltage, a common trigger for spurious module-communication codes.
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ACDelco Gold Negative Battery Cable — addresses power supply issues before assuming PCM failure.
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GENCO Remanufactured Alternator (Chevrolet/Pontiac 11146) — an option if the charging system is contributing to power instability; confirm the part number matches your vehicle.
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Car Jump Starter with Air Compressor & Digital Tire Inflator — useful backup while addressing a weak battery.