Service bulletin PIT5429
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 | 10115005 |
| Published by NHTSA | 2017-08-15 |
| Manufacturer's number | PIT5429 |
| Manufacturer's date | 2015-06-01 |
| NHTSA component | SUSPENSION |
NHTSA's summary
This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that have rough, harsh, or stiff ride. The concern is most noticeable between 35-55 mph on fairly smooth roads, when coming in contact with small road imperfections, or expansion joints. Technician will need to use the vibration analyzer CH-51450-A (Pico Oscilloscope), while driving the vehicle in 35-55 mph range on the same section of road for each stage of evaluation. If a rough, harsh, stiff ride has been determined to be the customer?s concern following evaluation using the Pico scope, then replace the complete front suspension shock with coil spring assemblies, and rear shocks with updated parts and reprogram the Suspension Control Module (K19) with updated calibrations available in TIS2WEB.
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
Suspension
| CADILLAC ESCALADE | 2015 |
|---|---|
| CADILLAC ESCALADE ESV | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2015 |
| CHEVROLET TAHOE | 2015 |
| GMC YUKON | 2015 |
| GMC YUKON XL | 2015 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
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| PIT5214F | 2023-12-18. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer?s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support. |
| 15NA082B | 2023-12-11. Service bulletin. Clunking Noise from Front of Vehicle During Turns and/or Bumps |
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