Hey y’all, so I inherited a 2002 Blazer and I’m giving her some TLC, but wanted to ask the experts here: both the rear and front washer pump motors aren’t responding to controls at all. The wipers themselves work fine, just the pumps don’t - no humming sounds, no leaks in the lines, they just don’t respond. Is there a separate fuse or relay for these suckers, or are they powered by the same ones that the wiper motors are? And is there a singular wire that might be bad which controls both, or am I just looking at a coincidence?

 

I just replaced the front WW pump in my 2002 with one of these . It was not a perfect copy, the clip with the wires doesn't snap in, I used a zip tie it secure it, and you have to re-use your old rubber grommet. However, it pumps.

The old motor worked but it was leaking. Not knowing the history of yours, I guess both the pumps could be bad so you are right to look for a common fuse but with two circuits you might not find one.

Here's how I got mine out: 1. detach the upper radiator hose, 2. remove the housing that the air cleaner sits on - there are two bolts on the throttle side to be removed and two rubber grommets on the grill side You can leave the air cleaner and cover attached. 3. remove the reservoir screw and lift out the reservoir. Then replace the lower (front) pump. I didn't bother with the rear pump, it is ineffective anyway. To reassemble I used zip ties to replace the aforementioned bolts.

 

Thanks, friend! And ALL HAIL THE ZIP TIE. 🙏🏻 Can’t tell you how many cars I’ve used those babies on for various repairs or repairs quick fixes!

Sadly I don’t know much about the ol’ girl’s maintenance history - she belonged to a beloved friend/former lover/man who meant the world to me that passed unexpectedly last November, and when I told his family I couldn’t bear to see anything happen to the truck and asked if I could buy it from them, they absolutely refused and insisted I take her for free. She’s a solid beast with only 151k miles, but her daddy was a heavy equipment operator who treated her like his other machines - if it’ll operate just fine without it, don’t bother fixing/replacing it 😂 SO I’ve got a few things I’m working out; parasitic battery drain, a haunted rear hatch (it’ll just unlock when it feels like it), a BADLY needed tune-up, some other little hiccups, and the non-functioning washer pumps. And there’s cosmetic damage but it’s not structural so I could care less; the rust and paint scratches can wait, and I might just leave em.

I did buy the replacement pumps for front and rear (went AC Delco bc I got them for a dang good price from Rock Auto), figure I’ll replace those anyway because it’s within my capacity and hey, she’s 22 years old, may as well. But when it comes to electrical issues past replacing a fuse or relay, I’m freakin’ useless - thankfully my brother in law is a mechanic, I got two good buddies who’re mechanically inclined, and a good friend of mine’s dad has a shop that specializes in automotive electrical. Was just hoping maybe it was a simple relay issue, $20 plug-in and she’s all fixed lol. (I’ve learned that DIY auto repair tends to end up like DIY plumbing jobs - you think you’ve got everything you need to know and all the parts at the start, BUT then it always ends up taking at least three trips to the hardware store and a whole lot of creativity.)

Will update when I get the new pumps installed, but in the meanwhile - if anyone else has some thoughts, please chime in! I know my way around under the hood but I’m new to Chevy vehicles.