Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy
This answer was rated:

1996 GMC K2500 Suburban. Need to change to expansion valve

1996 GMC K2500 Suburban....
1996 GMC K2500 Suburban. Need to change to expansion valve on rear ac as part of a significant ac component change (compressor, dryer, orifice tube, and rear expansion valve). Without cutting a hole in the side of the ducting (as seen in some home videos) what are the RIGHT ways to access the expansion valve for replacement and line flushing?
Show More
Show Less
Ask Your Own Chevy Question
Answered in 15 minutes by:
10/17/2016
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 4,268
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Ask Your Own Chevy Question

hey how are you

give some time, will put a file together & I will send you all the steps of R & R and diagrams to help you do it .

Chad

Ask Your Own Chevy Question

Remove or Disconnect 1. Negative battery cable. 2. Engine coolant. 3. Recover refrigerant. 4. Instrument panel. See: Instrument Cluster / Carrier > Procedures 5. Electrical connectors, as necessary. 6. Center floor air distribution duct. 7. ECM and mounting tray (diesel engines only). 8. Hinge pillar trim panels. 9. Blower motor cover. 10. Blower motor (60). 11. Steering column. 12. Tilt back instrument panel assembly. 13. Coolant recovery reservoir. 14. Heater hoses. 15. Evaporator tube. 16. Accumulator. 17. Screws (52 and 64). 18. Nut (50). 19. Screw (56). 20. Module assembly (57). - May be necessary to have an assistant when removing module assembly. 21. Evaporator case bottom cover plate (63). - Remove the seven screws that hold the cover plate to the module assembly. 22. Heater core and seal from module assembly. 23. Evaporator case cover (61). - Remove the four screws that hold the case cover to the module assembly. 24. Evaporator core. Install or Connect 1. Evaporator core. 2. Evaporator case cover (61). - Install the four screws that hold the case cover to the module assembly. 3. Heater core and seal into module assembly. 4. Evaporator case bottom cover plate (63). - Install the seven screws that hold the cover plate to the module assembly. 5. Module assembly (57). - May be necessary to have an assistant when installing module assembly. 6. Screw (56). 7. Nut (50). 8. Screws (52 and 64). Tighten ^ Screw (56) to 11 Nm (97 lb in). ^ Nut (50) to 2.8 Nm (25 lb in). ^ Screws (52 and 64) to 1.9 Nm (17 lb in). 9. Accumulator. 10. Evaporator tube. 11. Heater hoses. 12. Coolant recovery reservoir. 13. Instrument panel. 14. Steering column. 15. Blower motor (60). 16. Blower motor cover. 17. Hinge pillar trim panels. 18. ECM and mounting tray. 19. Center floor air distribution duct. 20. Electrical connectors, as necessary. 21. Engine coolant. 22. Negative battery cable. 23. Charge system. 24. Check system for leaks.

Ask Your Own Chevy Question

Removal 1. Negative battery cable. 2. Cup holder. ^ Remove screw under holder and slide out I/P. 3. Instrument cluster bezel. ^ The bezel is retained by four clips across the top edge and three along the bottom. 4. Electrical connections for headlamp switch, dimmer control and accessory switches. 5. Four screws retaining instrument cluster. 6. Instrument cluster from vehicle. ^ Keep fingers and other foreign objects away from the flexible circuit connections. Install 1. Press instrument cluster into instrument panel. 2. Instrument cluster hold-down screws. ^ Electrical connections for headlamp, dimmer control and accessory switches. 3. Instrument cluster bezel. 4. Negative battery cable.

Ask Your Own Chevy Question

please Let me know if that is what you looking for

Chad Farhat

ASE Certified Technician

Ask Your Own Chevy Question
Customer reply replied 1 year ago
Chad, thanks for the quick response. the focus is on the REAR HVAC assembly in order to get to the expansion valve for the REAR a/c. What you sent me seems to focus on the front.
Customer reply replied 1 year ago
I could have been a bit more clear that I need help accessing/replacing the expansion valve on the REAR a/c.

ok no problem let me send you that

Ask Your Own Chevy Question

Remove or Disconnect 1. Negative battery cable. 2. Recover refrigerant. 3. Rear quarter interior trim, as necessary. 4. Right rear quarter trim panel. 5. Right rear wheelhouse. 6. Rear heater hoses from auxiliary heater core (32), if equipped. 7. Auxiliary refrigerant hoses (20 and 21) from auxiliary evaporator (26). 8. Electrical connectors, as necessary.

9. Heater/evaporator case cover. A. Remove case clip. B. Remove eleven case screws. C. Separate case halves. 10. Pipe insulator 11. Evaporator core (26). Install or Connect 1. Evaporator core (26). 2. Pipe insulator. 3. Heater/evaporator case cover and screws. Case clip. 4. Auxiliary heater case to the vehicle. 5. Auxiliary refrigerant hoses (20 and 21) to auxiliary evaporator (26). 6. Rear heater hoses to auxiliary heater core (32), if equipped. 7. Electrical connectors, as necessary. 8. Right rear wheelhouse. 9. Right rear quarter trim panel. 10. Rear-quarter interior trim, as necessary. 11. Negative battery cable. 12. Charge system. 13. Check system for leaks.

Please let me know if you need anything else on it, just reply back and we will continue

If you are good, Please Kindly Rate Me.

A 5 Star Rating is much Apreciatted

If you feel I have not been helpful Please DO NOT RATE ME BAD OR POOR (1 or 2 stars) ,You can always ask me again or I can opt out of your question & open it for another expert ,that will provide you with more or better assistance on this issue

Please keep in mind that when you rate me , it does not end our conversation.

you can always come back to this conversation and ask me any follow up question you may have on this issue

(you can copy this link page & paste it in your browser when ready and it will open up our conversation again)

Thank You
Chad Farhat
ASE Certfied Technicia
n

Ask Your Own Chevy Question
Customer reply replied 1 year ago
This is much better! Is there an available exploded view of the inside of the Heater/evaporator case showing the expansion valve and the evaporator core?

let me check , i think i sent you all i had , but i will double check , i have another system i will check on too

be right back

Ask Your Own Chevy Question

Rear units use an Expansion Valve exploded view

it will be number #23 in the diagram i just sent you

Please don't forget to Rate Me before You exit since that is how get compensated for our time:)

Chad

Ask Your Own Chevy Question

Hey paul , the evaparator core will be # 9 in the diagram

good luck

Chad

Ask Your Own Chevy Question
Customer reply replied 1 year ago
Chad, that one is very helpful. Now I just have to the follow directions.

ok good , i m glad it was .

take pictures before , so if you forget you can go back and check

Chad

Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 4,268
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems
Verified
Chad Farhat and 87 other Chevy Specialists are ready to help you
Ask your own question now

Thank You For The rating :)

IF you need my assistance in future on a different issue , just start your question with ( FOR CHAD FARHAT ONLY) & they will send it to me

or There will be a tab on your screen if you enter my profile ,that says Request this expert again , either way will work.

Ask Your Own Chevy Question
Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 4,268
4,268 Satisfied Customers
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems

Chad Farhat is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,287 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,322 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,865 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,916 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,721 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
Blower motor doesn't run on my sons 2005 chevy Pick up.
blower motor doesn't run on my sons 2005 chevy Pick up … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,101 satisfied customers
I have replaced the blower motor, the blower motor relay and
I have replaced the blower motor, the blower motor relay and resistor and still have no air flowing out of vents … read more
Jaybird61
Jaybird61
Master Automotive Mechanic
2,084 satisfied customers
My son needs to replace his heater core but I have a
My son needs to replace his heater core but I have a question normally when your heater core leaks or goes out it leaks on the inside of the car well the leak is on the outside of the engine is that n… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
995 satisfied customers
The blower motor is not coming on at all checked the blower
The blower motor is not coming on at all checked the blower motor and it is working … read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
3 satisfied customers
I just replaced my blower motor resistor and put in a
Hi , I just replaced my blower motor resistor and put in a pigtail spliced into the factory harness . there was no blower on high position 5 / this is the second time I have done this . now got every … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
The heater blower motor doesn't work. I checked fuses so I
the heater blower motor doesn't work. I checked fuses so I know that tyhat is not it. … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
The rear blower motor is not working and was wondering if
The rear blower motor is not working and was wondering if there was a separate fuse panel for the back of the vehicle. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
The air conditioner blower motor does not work. I have
The air conditioner blower motor does not work. I have replaced the resistor and the speed rheostat. With any mode and speed setting I get 12 volts to the blower plug, but neither the old nor the new … read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
My heater core has been disconnected and I would like to
Hi my heater core has been disconnected and I would like to reattach the hoses … read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,322 satisfied customers
I had a new heater core installed in my 99 Blazer - i only
I had a new heater core installed in my 99 Blazer - i only get hot air when it set to 82 degrees other wise i only get cold air … read more
Chad Farhat
Chad Farhat
ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
4,268 satisfied customers
Coolant leak passenger side heater core box. Not sure how
and the guy didn't tell me when I should top up and gas jockey put concentrate instead of dexcool … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Blower Motor is not working. Just replaced the motor
Blower Motor is not working. Just replaced the motor resistor . … read more
Chad Farhat
Chad Farhat
ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
4,268 satisfied customers
I have a 2005 astro van that the blower motor only works on
i have a 2005 astro van that the blower motor only works on high and that is intermtitant . replaced resister with a napa same thing replaced that one same thing . also gauges go out on lower three sp… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Blower motor isn't working on my 2008 Chevy Trailblazer
blower motor isn't working on my 2008 Chevy Trailblazer changed the blower resistor and it worked for a short time but quit. Checked for power to blower motor but none found power from climate control… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,322 satisfied customers
Need help checking blower motor on 2004 chevy silverado.
need help checking blower motor on 2004 chevy silverado. where are relays? … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Blower motor doe's not fuction. There is very low voltage at
blower motor doe's not fuction. There is very low voltage at blower motor connector not the 12 V there should be. 2005 model … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Blower motor. Changed resistor. found that motor will work
Blower motor. Changed resistor. found that motor will work if I wiggle the connector at the motor itself. Think it is just a bad connection? … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Heater core failed, it's leaking into the passenger side
I haven't fixed it yet. It happened yesterday after my AC quit. I live in Louisiana so not having AC is tough … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,101 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x