Service bulletin 18169
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10143730 |
| Published by NHTSA | 2018-08-20 |
| Manufacturer's number | 18169 |
| Manufacturer's date | 2018-05-18 |
| NHTSA component | POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION |
NHTSA's summary
18169 - Service Update.- Certain vehicles equipped with a 10-speed automatic transmission (RPO MF6), and a 6.2L engine (RPO L86) may experience a 2 to 3 second delayed engagement when shifting between park, reverse, or drive (performing garage shifts). Customers may also experience a hard shift, with a possible bang or clunk. If the vehicle is on an incline the customer may experience a short roll back due to the hesitation. Dealers are to reprogram the transmission control module (TCM) with an updated calibration.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Transmission and driveline, Automatic transmission
| CADILLAC ESCALADE | 2018 |
|---|---|
| CHEVROLET TAHOE | 2018 |
| GMC YUKON | 2018 |
| GMC YUKON DENALI | 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON DENALI XL | 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2018 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
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