1988 GMC Sierra air conditioner has no power at dashboard display, no blower, no heater. Checked the fuse dasand it is okay. Found a relay on firewall, but how can I tell if this is problem?

Asked by RebelRed1 Apr 10, 2014 at 02:53 PM about the 1988 GMC Sierra 1500

Question type: Maintenance & Repair

Checked the dashboard fuse and it is okay. Found a relay on firewall, but how can I tell if this is problem?

1 Answer

15

I had the same and turned out to be the controller module Had gone thru 2 then gm found a wire back feeding and blowing the unit. Had them run a new wire and put new controller in , no issues any more..... This is on my 97 gmc

Your Answer:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    9,210
  • #2
    yetilikesbeer
    Reputation
    8,470
  • #3
    John Saffrahn
    Reputation
    8,350
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
74 Great Deals out of 6,476 listings starting at $2,995
Used Chevrolet Camaro
17 Great Deals out of 579 listings starting at $9,990

Used Cars for Sale

2020 GMC Sierra 1500 For Sale
5 Great Deals out of 424 listings starting at $30,995
2019 GMC Sierra 1500 For Sale
189 listings starting at $32,233
2018 GMC Sierra 1500 For Sale
11 Great Deals out of 376 listings starting at $24,940
2017 GMC Sierra 1500 For Sale
6 Great Deals out of 329 listings starting at $21,995
2016 GMC Sierra 1500 For Sale
4 Great Deals out of 119 listings starting at $14,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.