• AMBW
  • Motor Age
  • Motor Age Training
  • Professional Distributor
  • PTEN
    1. TSBs

    Replacing Ram 1500 A/C expansion valve

    Dec. 10, 2024
    This bulletin applies to 2019-2021 Ram 1500 trucks built on or before Nov. 6, 2021, and equipped with air conditioning.
    Related To: Mitchell 1
    Photo courtesy of Chrysler
    Verify proper A/C performance and verify that the whistling noise is gone. Recharge the system using R-1234YF refrigerant.
    Verify proper A/C performance and verify that the whistling noise is gone. Recharge the system using R-1234YF refrigerant.

    This bulletin applies to 2019-2021 Ram 1500 trucks built on or before Nov. 6, 2021 and equipped with air conditioning.

    A whistling noise may be heard after the engine is shut off. Remove and replace the A/C expansion valve P/N 68396043AB. Verify proper A/C performance and verify that the whistling noise is gone. Recharge the system using R-1234YF refrigerant.

    About the Author

    Mike Mavrigian | Motor Age Editor

    Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

    Email

    Continue Reading

    Sponsored Recommendations

    Hunter ADAS Information Hub

    Curious about ADAS technology and calibration? Dive into the Hunter ADAS Information Hub to discover everything you need to know, from the latest advancements to the best practices...

    Finding the Best ADAS Calibration Equipment for Your Shop

    Considering ADAS calibrations? We've got you covered. Here are all the important factors in researching ADAS equipment and how innovative and easy-to-use Hunter products can help...

    What is ADAS?

    ADAS (Advanced Driver Assistance Systems) has evolved significantly over the past 50 years, starting with innovations like electronic cruise control and anti-lock brakes. Discover...

    You Should Be Doing ADAS Calibrations. True or False?

    The world of ADAS calibrations can be confusing with so much information flying around. But how much of it is actually true? Separate fact from fiction and get the clarity you...

    Voice Your Opinion!

    To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!