# Service bulletin 18NA108

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: 10137545
- Published by NHTSA: 2018\-05\-21
- Manufacturer's number: 18NA108
- Manufacturer's date: 2018\-04\-12
- NHTSA component: SUSPENSION

## NHTSA's summary

This technical bulletin provides a procedure to correct a left lean condition due to architectural corner mass distribution.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10137545-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10137545-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Suspension

## Vehicles listed

- 2015 to 2018 CHEVROLET COLORADO
- 2015 to 2018 GMC CANYON

## Other bulletins for the same vehicles and component

- [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- [17\-NA\-394](/bulletins/11017245.md), 2025-04-26, Service bulletin: SUSPENSION. This technical bulletin provides a procedure for lubricating the rear leaf springs and re\-torque the bolts to correct a squeak, clunking noise.
- [05\-03\-07\-009L](/bulletins/11015409.md), 2025-03-08, Service bulletin: SUSPENSION; WHEELS. This service bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
- [17\-NA\-394](/bulletins/11015202.md), 2025-03-06, Service bulletin: SUSPENSION. This technical bulletin provides a procedure for lubricating the rear leaf springs and re\-torque the bolts to correct a squeak, clunking noise.
- [17\-NA\-394](/bulletins/11012928.md), 2025-01-18, Service bulletin: SUSPENSION. This technical bulletin provides a procedure for lubricating the rear leaf springs and re\-torque the bolts to correct a squeak, clunking noise.
- [05\-03\-08\-002J](/bulletins/11007936.md), 2024-09-20, Service bulletin: SUSPENSION. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- [05\-03\-08\-002J](/bulletins/11007935.md), 2024-09-20, Service bulletin: SUSPENSION. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- [15\-00\-89\-004G](/bulletins/11000119.md), 2024-05-15, Service bulletin: ENGINE; SUSPENSION; POWER TRAIN. This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- [PIT5214F](/bulletins/10247352.md), 2023-12-18, Service bulletin: SUSPENSION. 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.
- [120310001B](/bulletins/10245769.md), 2023-12-04, Service bulletin: TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; SUSPENSION; WHEELS. Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip

JSON: [/v1/bulletins/10137545](/v1/bulletins/10137545)

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