# Service bulletin 3637

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: 10018538
- Published by NHTSA: 2006\-01\-06
- Manufacturer's number: 3637
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

## NHTSA's summary

EV COOLING FAN NOISE CHARACTERISTICS \- DO NOT REPLACE EV FAN. \*TT

## 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

Engine, Cooling fan, Cooling system

## Vehicles listed

- 2005 to 2006 BUICK RAINIER
- 2005 to 2006 CHEVROLET TRAILBLAZER
- 2005 to 2006 GMC ENVOY
- 2005 to 2006 SAAB 9\-7X

## Other bulletins for the same vehicles and component

- [PIT3116B](/bulletins/10176314.md), 2020-06-15, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. This Preliminary information communicates information to Clean the throttle body if the engine stalls at idle when the A/C comes on.
- [3857](/bulletins/10019211.md), 2006-02-21, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. SUPPLEMENT TO BULLETIN 05\-01\-37\-002A, POOR REAR HEAT PERFORMANCE . \*AK

JSON: [/v1/bulletins/10018538](/v1/bulletins/10018538)

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