Service bulletins for the 2020 GMC Sierra
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
1990 on file from NHTSA, as of 2026-10-19.
About P1488 on the 2020 GMC Sierra: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P1488 are shown. Show all
| PIP5748F | 2021-05-17. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
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| PIP5748D | 2021-02-16. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
| PIP5748D | 2021-01-25. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
| PIP5748C | 2020-12-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
| PIP5748B | 2020-11-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
| PIP5748A | 2020-10-19. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
| PIP5748 | 2020-09-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.