AC and Rear Window Wiper Issue Help!
10

Asked by SierraSHLW Aug 23, 2017 at 09:41 AM about the 1999 Chevrolet Astro LT Extended RWD

Question type: Maintenance & Repair

Complicated but will try to be concise. No high on
fan. Replaced resistor. Good. Started blowing #12
fuse. Replaced relay and blower motor. Still
blowing. Narrowed down to control unit in dash.
Opened dash, inspected wires. Drove for some
time with dash open. Wasn't blowing fuse so I
closed dash. Now for the nuts part! Thought it was
fine until the rear window wiper and washer pump
came on. OK, maybe bad switch. Fuse #23 was
good. Trick was when I turned the AC off, it shut
the rear wiper/washer off. With AC off, wiper,
washer and delay worked fine. Bleed over
somewhere? Wiper and AC started playing well
together until I hit a fairly hard bump in the road.
Wiper took off again. Any Ideas what is going on?

2 Answers
22,300

Guru9FSV8 answered 6 years ago

Gremlins? Any wires touching metal under there? Does a visual inspection show any couple of wires in a harness with flaking insulation? Maybe they are touching? Have you looked for another switch? Try a junkyard before buying a new one.

Mark helpful
10

SierraSHLW answered 6 years ago

I did inspect the wires I could see. Most of them are wrapped in tape. The harness does squeeze through an opening at the firewall. Moved them around. They could be touching somewhere. I even thought that maybe there was a wire for AC running in a harness that goes to the rear. I don't have AC back there but maybe the harness is used in my van and in a conversion van too. I have looked for another switch. Would get a used, for sure. My options now is deaden the existing AC hot and run a add-a-circuit off the fuse block with a new wire so it's switched. Another option is to pull the fuse out of the rear wiper slot. I use that very seldom. Thx for your reply.

Mark helpful

Your Answer:

Related Questions

  • AC and Rear Window Wiper Issue Help! 2 Answers

    Complicated but will try to be concise. No high on fan. Replaced resistor. Good. Started blowing #12 fuse. Replaced relay and blower motor. Still blowing. Narrowed down to control unit in dash. Op...

    1999 Chevrolet Astro LT Extended RWD

    -

    Maintenance & Repair

  • Starter issue 2 Answers

    I have an 87 Chevy Astro 4.3 v6 and I can't get it to crank. Replaced a bad starter about 3 months ago and then over a 2-day period, there would be times it wouldnt do anything when I turned th...

    1987 Chevrolet Astro

    -

    Maintenance & Repair

  • Rear door latch on 95 Astro 2 Answers

    The rear door latch on my 95 Astro appears to be frozen in the closed position although the door is open, so I can't completely shut the rear doors or hatch. Is there some way to free up the latch so...

    1995 Chevrolet Astro

    -

    Maintenance & Repair

  • My 95 Atro van is leaning to the drivers side especially at the rear wheel. I have repalced the shocks and it still bottoms out over a bump. 5 Answers

    I wonder if the springs are broken? It bottoms out over bumps. I have replaced the rear shocks to no avail

    1995 Chevrolet Astro

    -

    Maintenance & Repair

  • Van hesitates and bucks while drivong. 1 Answer

    Car hesitates and Bucks while driving we check the camshaft sensor we checked the distributor still no luck.

    2001 Chevrolet Astro

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

1999 Chevrolet Astro

Write a car review

Review another car

Shortcuts

Search Chevrolet Astro Questions

CarGurus Experts

  • #1
    celica_gt_pimp
    Reputation
    520
  • #2
    John Saffrahn
    Reputation
    480
  • #3
    rhtuxman
    Reputation
    390
View All

Know more, shop wisely

Search

Related Models For Sale

Used GMC Safari
31 listings
Used Chevrolet Astro Cargo
31 listings
Used Chevrolet Express
118 Great Deals out of 1,553 listings starting at $3,995
Used Chevrolet Express Cargo
323 Great Deals out of 5,113 listings starting at $1,000
Used Ford E-Series
148 Great Deals out of 2,267 listings starting at $900
Used Chevrolet Tahoe
1,024 Great Deals out of 20,127 listings starting at $1,100
Used GMC Savana
4 Great Deals out of 247 listings starting at $4,616
Used Chevrolet Silverado 1500
4,093 Great Deals out of 130,457 listings starting at $800
Used Chevrolet Chevy Van
18 listings
Used Toyota Sienna
545 Great Deals out of 8,565 listings starting at $650
Used Toyota 4Runner
1,230 Great Deals out of 18,340 listings starting at $1,800
Used GMC Safari Cargo
8 listings
Used GMC Savana Cargo
92 Great Deals out of 1,933 listings starting at $2,500
Used Chevrolet Blazer
726 Great Deals out of 14,616 listings starting at $4,495

Used Cars for Sale

2005 Chevrolet Astro For Sale
5 listings starting at $11,250
2004 Chevrolet Astro For Sale
8 listings
2003 Chevrolet Astro For Sale
8 listings starting at $8,400
2002 Chevrolet Astro For Sale
9 listings starting at $9,999
2001 Chevrolet Astro For Sale
1 listing

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.