Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

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: 5,645
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: 5,645
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
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a chevy mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
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: 5,645
5,645 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

15,659 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,621 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,884 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

2,948 satisfied customers

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

Ron Z.

Ron Z.

- Chevy Tech -

2,822 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
I'm going to replace the orifice tube in my '91 Chevy k2500
I'm going to replace the orifice tube in my '91 Chevy k2500 and not sure exactly how to do it. It appears I have to dismantle the hose from the back of the engine compartment to then be able to get at… read more
Expert-Repair
Expert-Repair
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
11 satisfied customers
A/C not cooling. I get 70F from the front and 65F from the
A/C not cooling. I get 70F from the front and 65F from the rear controls. I get about 150PSI from both the high and low with a manifold gauges. There is no expansion valve in front system. (2003 Subur… read more
roy
roy
Associate Degree
3 satisfied customers
Bob. I bought all ACDELCO parts off amazoncompressor, orings
Hey Bob. I bought all ACDELCO parts off amazoncompressor, orings kit, accumulator, oriface tube, ac belt and tensioner, ac flush cylinder $330. Autozone 4 cans of R134 12oz, PAG oil $60 and harbor fre… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,051 satisfied customers
Air-conditioning not blowing cold at idle 2011 Chevrolet
Air-conditioning not blowing cold at idle 2011 Chevrolet express 3500 with a 6.6 L diesel ambulance. Recovered system recovered 4.05 pounds. Book calls for 3.05 pounds. Charge system back to Dealer sp… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
2005 epress 3500 6.0 I am looking orifice tube for
2005 epress 3500 6.0 I am looking for the orifice tube for the rear AC on this vehicle. I failed a compressor and the orfice tube liked to never came out so it has a prob. I need to find and change th… read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
Chevrolet Suburban 1500 Z71: I have recently installed a new
I have recently installed a new ac compressor, orifice tube and dryer in my 2002 suburban. I flushed the lines and installed the parts. I had it vacuumed tested and filled with refrig. Within 5 mins t… read more
Dave Nova
Dave Nova
Chevrolet Technician
Associate Degree
7,092 satisfied customers
Chevrolet Suburban 1500 LT: 1999 Chevy suburban ac is cool
1999 Chevy suburban ac is cool but not cold. Put new condeensor office ttube' and compressor and dryer.pull a vacuum no leaks . Check temp in front of middle air vent with fan speed on low temp is 66 … read more
ASEMaster35yrs
ASEMaster35yrs
Vocational, Technical or Trade Scho
1,314 satisfied customers
Chevrolet Suburban 1500 LT: 1997 Suburban 167000 miles A/C
1997 Suburban 167000 miles A/C Diagnosis-Repair I charged my system yesterday to do some leak detection. Once up to pressure both front and rear worked properly and blew cold. I noticed a few issues. … read more
Eric
Eric
GM service dept Shop Foreman/Lead Tech
High School or GED
615 satisfied customers
Chevrolet Suburban 1500 LS: I have a 2005 Suburban with rear
I have a 2005 Suburban with rear AC. The problem is when I charge the vehicle with R134a only the front works. The rear does not cool at all. Plus I can't put the full charge into the system? I got ab… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,621 satisfied customers
1992 Caprice Classic: compressor..I flushed all lines..evaporator
I am working on a 1992 Caprice Classic Wagon . I have just replaced the A/C compressor and receiver dryer. I flushed all lines as well as the condenser and evaporator and replaced the orifice tube. I … read more
Dodge expert
Dodge expert
ASE MASTER TECH, REPAIR FACILITY OWNER
High School or GED
3,636 satisfied customers
2001 suburban: The front blows cold, not the rear..low pressure
I have a 2001 suburban with rear a/c. The front blows cold, not the rear. The mixer door in the rear is working fine, but the low pressure a/c line to the rear isn't cold at all. Is there an expansion… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
1995 suburban: 4wd..loud..orings, blew air through all coils and lines
Why do i have no pressure change in the a/c system of a 1995 suburban 4wd when the compressor is running? Buddy brought the truck over saturday so i pulled a vaccume, charged 1.5lb static and turned c… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
2001 chevrolet: The vehicle is equiped..high pressure..connector
2001 chevrolet surban. The vehicle is equiped with the rear evaporator. I can only find the high pressure side connector. The low pressure connection for charging is not readily visible. We have the c… read more
Mazda Ed
Mazda Ed
Lead Technician
High School or GED
1,963 satisfied customers
chevy suburban: /c on like a squlling noise maybe bearing..run rough
my chevy suburban make a weird noise when i have a/c on like a squlling noise maybe bearing on something and also when on car seems to run rough?… read more
Wicked Wrench
Wicked Wrench
Automotive Technology Instructor
Associate Degree
205 satisfied customers
chevy suburban: to my manifold gauges i..canister..tractor trailer
i recently replaced the evaparator core and the reciever drier on a customers chevy suburban i vaccumed the system down for 6 hours and then charged it it was blowing very cold that day and according … read more
Dave Nova
Dave Nova
Chevrolet Technician
Associate Degree
7,092 satisfied customers
95 Gmc: cool..steady..45-55...and the High side is 150 and it
I have a 95 Gmc Sonomia....Everything is new in the A/c system except the Condenser...Still will not cool...low side ,with one can or 3 cans of 134, is 100 steady and the normal should be around 45-55… read more
Wrenchtech
Wrenchtech
Vocational, Technical or Trade Scho
616 satisfied customers
2001 chevy tahoe: rear air i changed the a/c compressor..my rear..cool
i have a 2001 chevy tahoe with rear air i changed the a/c compressor and the dryer filled it with r- 134 got a little cold then got hot but my rear air stayed cool what should i look for or how can i … read more
james
james
Vocational, Technical or Trade Scho
254 satisfied customers
What is needed to fix air conditioner on 1990 chevy van
Problem: 1990 Chevy G20 Van, with dual air (both front and rear) air conditioning system does not get cold enough. After running engine with air conditioner on maximum for greater that an hour the tem… read more
frank
frank
Vocational, Technical or Trade Scho
1,892 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