Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy

How do you replace heater blower motor on 1998 gmc pickup with ac

Customer Question
how do you replace heater blower motor on 1998 gmc pickup with ac
Submitted: 8 years ago.Category: Chevy
Ask Your Own Chevy Question
Answered in 8 minutes by:
11/17/2009
Chevy Mechanic: Tim's Auto Repair, mechanic replied 8 years ago
Tim's Auto Repair
Category: Chevy
Satisfied Customers: 16,162
Experience: Have owned a repair shop for 25 yrs.
Verified

hi

this should help you

thanks

please ACCEPT my answer so I can get credit for my work.i don't receive commission unless you do ..i'm not always going to be giving you good news,so please dont let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.PLEASE ASK IF YOU NEED MORE HELP

1992-98 Models

See Figure 4

  1. Disconnect the negative battery cable.
  2. Remove the right rear quarter panel trim.
  3. Disconnect the electrical lead at the fan.
  4. Remove the screws and if equipped, the cooling tube.
  5. If necessary, remove the fan retaining nut and lift out the blower fan.
  6. Remove the blower motor.


To install:

  1. Install the blower motor and then position the fan.
  2. Install the retaining nut and then tighten the mounting screws to 12 inch lbs. (2 Nm).
  3. If removed, install the cooling tube.
  4. Connect the electrical lead. Install the quarter panel trim cover.
  5. Connect the battery cable.

FIG : Fig. 4: Auxiliary heating and A/C system

image

199198 C/K With Air Conditioning

  1. Disconnect the negative battery cable.
  2. Remove the instrument panel compartment.
  3. Unfasten the forward-most screw in the right side door sill plate. Remove the trim panel from the right hinge pillar.
  4. If necessary for access, unplug the ECM wiring and remove the ECM.
  5. Unplug the electrical lead at the blower motor and if equipped, remove the underdash courtesy lamp.
  6. Remove the bolt from the right side lower instrument panel support. Remove the blower cover and the cooling tube.
  7. Unfasten the flange screws and pull out the blower motor. You may have to pry back the right side of the instrument panel slightly. Be careful!


To install:

  1. Position the blower motor and install the mounting screws. Be careful not to catch the blower on anything when sliding it in.
  2. Install the cooling tube and the blower shield.
  3. Install the bolt into the instrument panel support.
  4. Attach the courtesy lamp and the blower electrical lead.
  5. If removed, install the ECM. Attach the wiring harness.
  6. Install the trim panel on the pillar. Don't forget the screw in the sill plate!
  7. Install the instrument panel compartment and connect the battery cable.


Edited by tims auto repair on 11/17/2009 at 4:40 PM EST
Tim's Auto Repair
Category: Chevy
Satisfied Customers: 16,162
Experience: Have owned a repair shop for 25 yrs.
Verified
Tim's Auto Repair and 87 other Chevy Specialists are ready to help you
Ask your own question now
Chevy Mechanic: Tim's Auto Repair, mechanic replied 8 years ago
Primary A/C System

 

Heater Core Case" width="520" height="330"/> Evaporator/Heater Core Case

Remove or Disconnect

 

  1. Negative battery cable.
  2. Instrument panel compartment.
  3. Front screw from right door sill plate.
  4. Right hinge pillar trim panel.
  5. Electrical connectors from PCM, as necessary.
  6. PCM and mounting bracket (diesel engines only).
  7. Electrical connectors from blower motor (60), as necessary.
  8. Bolt from right lower I/P support.
  9. Blower motor cover.
  10. Blower motor cooling tube.
  11. Blower motor flange screws (59).
  12. Blower motor (60).
    • Pull the blower motor forward carefully to avoid distorting the blower fan.
    • May be necessary to pry back right side of instrument panel.

Inspect

  • Blower motor terminals for distortion. Clean corrosion from the terminals or replace the blower motor (60) as necessary.
  • Flange of the blower motor (60) for damage or distortion that could cause an air leak. Repair as necessary.
  • Blower fan for damage and distortion.

Install or Connect

  1. Blower motor (60).
    • Guide the blower motor and blower fan into position, being careful not to catch the blower fan on protruding parts.
  1. Blower motor flange screws (59).
  2. Blower motor cooling tube.
  3. Blower motor cover.
  4. Bolt to right lower I/P support.
  5. Electrical connectors to blower motor (16), as necessary.
  6. Mounting bracket and ECM.
  7. Electrical connectors to ECM, as necessary.
  8. Right hinge pillar trim panel.
  9. Front screw into front door sill plate.
  10. Instrument panel compartment.
  11. Negative battery cable.
    • Check circuit operation.
please ACCEPT my answer so I can get credit for my work.i don't receive commission unless you do ..i'm not always going to be giving you good news,so please dont let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.PLEASE ASK IF YOU NEED MORE HELP
Ask Your Own Chevy Question
Ask Tim's Auto Repair Your Own Question
Tim's Auto Repair
Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: Chevy
Satisfied Customers: 16,162
16,162 Satisfied Customers
Experience: Have owned a repair shop for 25 yrs.

Tim's Auto Repair 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

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

16,162 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

2,918 satisfied customers

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

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
I'm getting ready to deal with a clogged heater core on an
Hi, I'm getting ready to deal with a clogged heater core on an 08 Chevy Uplander. Takes very long time of driving for any warm air to come out, and even then barely warm. Two shops said its the heater… read more
Mechanic01
Mechanic01
1,645 satisfied customers
Have a 2000 chevy suburban. changing the heater core. do you
have a 2000 chevy suburban. changing the heater core. do you have a diagram showing all the attachment bolts for the HVAC unit to the firewall so I can undo them and pull it away from the firewall? Ri… read more
Lou P. master tech
Lou P. master tech
Mercedes Benz master tech
Bachelor's Degree
649 satisfied customers
I need to replace the heater core on my 2004 chevy caviler
I need to replace the heater core on my 2004 chevy caviler … read more
roy
roy
Associate Degree
3 satisfied customers
Need to replace heater core. Whats the easiest way to get to
need to replace heater core JA: Okay, I'll connect you to the mechanic to go over that information regarding your Chevy. Before I do, is there anything else you want him to know? Customer: whats the e… read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
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
4,375 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
2,225 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
1,002 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
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
9,357 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
Owner
Associate Degree
4,393 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
Owner
Associate Degree
4,393 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
9,357 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
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
4,375 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