Drone Type Noise Heard While Air Conditioning (A/C) is On – 2018-2019 Chevrolet Trax

Bulletin No.: 18-NA-322
Date: February, 2019

Service Bulletin


Subject: Drone Type Noise Heard While Air Conditioning (A/C) is On

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Trax 2018 2019 1.4L (RPO LUV)


Involved Region or Country North America, South America
Condition Some customers may comment that a drone type noise can be heard when the A/C is on.
Cause This condition may be caused by the A/C compressor mounting bracket bolts bottoming out in the engine block.
Correction bracket bolts (1)

If the droning noise has been validated to be caused during A/C compressor operation, replace the bracket bolts (1).


Service Procedure

Refer to Air Conditioning Compressor Bracket Replacement in SI.


Parts Information

Causal Part Description Part Number Qty
N/A BOLT, HFH, M8X1.25X30.7, 26 THD, 18 OD, 8.8, GMW3359, M-PT 11588724 3


Warranty Information

For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.

Labor Operation Description Labor Time
4481978* Air Conditioning Compressor Bracket Bolts Replacement 1.7 hrs
*This is a unique Labor Operation for Bulletin use only.


Version 2
Modified Released October 24, 2018

February 14, 2019 – Added the 2019 Model Year and South America to the Involved Region or Country.

Bulletin No.: 18-NA-322
Date: February, 2019



Download (PDF, 1.09MB)


Bestseller No. 1
Bestseller No. 2
Six (6) 12oz Cans of DuPont Suva R134a Automobile Refrigerant/Freon (6 Cans)
  • Fits all vehicles from 1994 - 2010, and most vehicles after 2010
  • Meets AHRI-700 and SAE J2776 Purity Standards
  • "Pure" R134, no oil or dye added
  • Can be used to retrofit R12 systems & recharge R134 systems
Bestseller No. 3
ZeroR R-134a Refrigerant - 3 Cans - Made in USA - 12oz Cans
  • USA - Purchasing USA made refrigerants guarantee purity standards that will keep your A/C working for long time.
  • BRAND - The brand and label shipped when purchased could vary but will always meet the same quality standards.
  • NON SSV CANS - These cans are NOT equipped with the self sealing valve (SSV). This means you can used your common R-134a piercing style can taps.
  • DiY PARTS DIFFERENCE - Have questions? Reach out to our ASE Certified technical support staff!
Bestseller No. 4
Chemours DuPont Suva 134a Refrigerant, 12 oz., Pack of 12
  • Product of the USA
  • "Pure" R134, no oil or dye added
  • Fits all vehicles from 1994 - 2010, and most vehicles after 2010
  • Can be used to retrofit R12 systems & recharge R134 systems
  • Meets AHRI-700 and SAE J2776 Purity Standards
SaleBestseller No. 5
Interdynamics MAC-134 EZ Chill Refrigerant Refill with Charging Hose and Gauge - 18 oz.
  • All in one solution
  • Restores lost refrigerant and oil
  • Contains leak sealer to stop most common leaks in rubber hoses gaskets and O-rings
  • Self dispensing can has reusable recharge hose and in line pressure gauge
  • Easy to read gauge
SaleBestseller No. 6
A/C PRO ACP-100 Professional Formula R-134a Ultra Synthetic Air Conditioning Refrigerant with Reusable Dispenser and Gauge - 20 oz.
  • Number one rated coldest air
  • Contains moisture and acid eliminator
  • Reusable trigger dispenser with built in low pressure gauge and temperature dial indicator
  • Extra long 24 inch recharge hose for accessing hard to reach service ports
  • New easy coupler attaches simply by pushing on the port, (the item is non-returnable )
Bestseller No. 7
Arctic Freeze Ultra Synthetic Automotive Refrigerant 134A (22 oz.)
  • All-in-one solution - no additional tools required
  • Replaces lost R-134a refrigerant and oil in automotive A/C systems
  • System-safe leak sealer additive seals common A/C leaks in rubber hoses, gaskets and O-rings
  • Eliminates moisture buildup and acid from A/C system to extend A/C system life
  • Reusable trigger dispenser with gauge and temperature dial indicator
Bestseller No. 8
XtremepowerUS 3CFM 1/4HP Air Vacuum Pump HVAC R134a R12 R22 R410a A/C Refrigeration Kit AC Manifold Gauge Carrying Tote
  • SIMPLE BUT POWERFUL - XtremepowerUS 1/4 HP 3 CFM 1-Stage Rotary Air Vacuum Pump is designed to have high efficiency and low noise output with internal high volume cooling fan for extended use
  • HEAVY DUTY VACUUM PUMP - Die-cast Aluminum Alloy Casing enables the vacuum pump be light and durable at the same time. Equipped with brass fitting tethered safety caps to prevent oil leaks during transportation and handling.
  • HVAC GAUGE READING - The XtremepowerUS HVAC service gauge set is great for diagnosing and repairing AC systems. Ideal use for R12, R22, R134a and R410a
  • EASY OIL CHANGE - The vacuum pump features a simple Oil Fill Port for a clean pour and Oil Drain Plug positioned beneath the oil reservoir to quickly drain when needed. Checking the spillage meter will help to ensure the proper level of oil.
  • PACKAGE INCLUDED: Multicolored set of three 36" hoses, Manifold Gauge, Vacuum Pump Oil Bottle, Accessories and Storage Bag to keep equipment clean and dust free
Bestseller No. 9
ZeroR AC Refrigerant 6 Cans - Better Than R134a - Made in USA - Natural Non Ozone Depleting
  • BETTER THAN R134A - ZeroR Refrigerant is lightweight. The net weight is 6oz, but it fills your AC like 16oz of R134a! (See Conversion Chart). Lightweight also means less friction which will make your AC system last longer.
  • UNIVERSAL - ZeroR Refrigerant can be used in most AC systems, although the EPA has regulations stipulating what refrigerant they want you to use in each system. The chemical compound of ZeroR Refrigerant will safely bond with the compounds of R134a, R1234YF, R12, R22 and more!
  • ECO FRIENDLY - R134a is harmful to the environment and is being replaced with R1234YF under EPA regulations. ZeroR AC Refrigerant is even more environmentally friendly than R1234YF!
  • VALUE - Not only is ZeroR Refrigerant less expensive, but on average you use 1 less can per system.
  • SAFE - ZeroR AC Refrigerant is flammable and so is the new EPA approved R1234YF.
Bestseller No. 10
FJC 6036 R134a U-Charge Hose with Gauge
  • One Deluxe R134a U-Charge Hose With Gauge
  • For Use In Adding R134a Refrigerant Or Additives To Vehicle
  • Lowside Gauge Monitors Pressure To Aid In Getting A Correct Charge

Last update on 2019-05-09 / Affiliate links / Images from Amazon Product Advertising API

Last update on 2019-05-09 / Affiliate links / Images from Amazon Product Advertising API

Leave A Comment

Your email address will not be published. Required fields are marked *