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Service bulletin 3637A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10018591
Published by NHTSA2006-01-07
Manufacturer's number3637A
Manufacturer's date2009-09-01
ReplacesPIT-3637D
NHTSA componentSERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

NHTSA's summary

BRAKE PEDAL ASSEMBLY REPLACEMENT BRACKET SERVICE KIT. *TT UPDATED 3/26/10. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Brakes

Vehicles listed
CADILLAC ESCALADE2003, 2004, 2005, 2006
CHEVROLET AVALANCHE2003, 2004, 2005, 2006
CHEVROLET SUBURBAN2003, 2004, 2005, 2006
CHEVROLET TAHOE2003, 2004, 2005, 2006
GMC YUKON2003, 2004, 2005, 2006

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
05V1030002005-03-18. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
20050332005-02-15. Brakes
05V0430002005-02-08. SERVICE BRAKES, HYDRAULIC
04V0450002004-02-04. SERVICE BRAKES, HYDRAULIC
20040372004-01-29. Brakes

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
130522001B2023-12-11. Service bulletin. Pre-Formed and Pre-Flared Hydraulic Brake Pipe Kits Now Available for Service
130522001A2023-12-11. Service bulletin. Pre-Formed and Pre-Flared Hydraulic Brake Pipe Kits Now Available for Service
1305220012023-12-11. Service bulletin. Pre-Formed and Pre-Flared Hydraulic Brake Pipe Kits Now Available for Service
23-NA-1442023-09-15. Service bulletin. This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self Applies at Full Turns.
PIT3665L2022-11-21. Service bulletin. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
070316004D2022-06-13. Service bulletin. This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
PIP4723F2022-02-14. Service bulletin. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
PIT3665J2020-08-10. Service bulletin. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
PIT3271J2019-12-09. Service bulletin. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
PIT3665H2019-07-08. Service bulletin. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.