# Service bulletin 990308002A

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: 611289
- Published by NHTSA: 2000\-06\-01
- Manufacturer's number: 990308002A
- Manufacturer's date: 2004\-05\-01
- Replaces: 990308002B
- NHTSA component: SUSPENSION:FRONT

## NHTSA's summary

FRONT SUSPENSION COIL SPRING NOISE. \*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

Suspension

## Vehicles listed

- 1999 to 2004 CHEVROLET SILVERADO
- 1999 to 2004 GMC SIERRA

## Recalls for the same vehicles and component

- [2001100](/recalls/tc/2001100.md), 2001-04-24: Suspension

## Other bulletins for the same vehicles and component

- [03\-00\-91\-001I](/bulletins/10245395.md), 2023-11-22, Service bulletin: WHEELS; POWER TRAIN; STEERING; SUSPENSION; ENGINE AND ENGINE COOLING. This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis\-Road testing procedure when diagnosing vibration concerns.
- [150089004B](/bulletins/10190337.md), 2021-04-16, Service bulletin: SUSPENSION:FRONT:SHOCK ABSORBER; SUSPENSION:FRONT:MACPHERSON STRUT; SUSPENSION:REAR:SHOCK ABSORBER. Information Regarding the Differences Between Fluid Leakage and Seepage This bulletin is intended to help identify the differences between what is considered a fluid leak and what is considered seepage. Improper diagnosis may lead to unnecessary component replacement. Use the following information to determine if the condition is normal acceptable seepage or a defective component
- [060309004N](/bulletins/10168206.md), 2019-11-25, Service bulletin: SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY. This technical bulletin provides a procedure to apply grease to the leaf springs to correct a condition of a squeak noise from the metals making contact.
- [060309004J](/bulletins/10159573.md), 2019-05-13, Service bulletin: SUSPENSION. This technical bulletin provides a procedure to apply grease to the leaf springs to correct a condition of a squeak noise from the metals making contact.
- [PIT3098G](/bulletins/10156947.md), 2019-04-08, Service bulletin: SUSPENSION. This Preliminary Information communication provides information to the technician about vehicles that have a lean to the left or right. Technician will need to measure fender wheel\-opening heights, front and rear, to quantify vehicle lean. Fender wheel\-opening heights are related to, but distinct from, trim height. The front wheel\-opening height is known as P height, and the rear wheel\-opening height is known as R height. Adjust and heights that are out of specification. After all adjustments are done, perform a front\-end alignment and check headlight aim.
- [06\-03\-09\-004F](/bulletins/10150643.md), 2018-12-10, Service bulletin: SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY. This technical bulletin provides a procedure to add a lubricant to the rear leaf springs to correct the customers concern of a squeaking noise from the rear suspension.
- [06\-03\-09\-004F](/bulletins/10142238.md), 2018-06-25, Service bulletin: SUSPENSION. This technical bulletin provides a procedure to add a lubricant to the rear leaf springs to correct the customers concern of a squeaking noise from the rear suspension.
- [060309004K](/bulletins/10139210.md), 2018-06-04, Service bulletin: SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY; SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY. This technical bulletin provides a procedure to apply grease to the leaf springs to correct a condition of a squeak noise from the metals making contact.
- [03\-00\-91\-001G](/bulletins/10139199.md), 2018-06-04, Service bulletin: SUSPENSION. This informational bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis\-Road testing procedure, when diagnosing vibration concerns.
- [06\-03\-09\-004E](/bulletins/10139020.md), 2018-06-04, Service bulletin: SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY. This informational bulletin provides information for Squeak Noise from Rear of Vehicle Condition.

JSON: [/v1/bulletins/611289](/v1/bulletins/611289)

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