Only in the summer when the AC is on ,and not often but my 2004 trailblazer will stall?? I have brought it to the dealers and they checked for codes and nothing ...It has always done this New ..Help p

Asked by Karen May 25, 2013 at 09:32 PM about the 2004 Chevrolet Trailblazer LS RWD

Question type: Maintenance & Repair

I live in NC so the summer is hot and muggy...when my ac is on and the radio the car will stall at a stop light ...we have tried to fix it and nobody ever finds anything wrong

5 Answers

173,015

Could be the idle air control valve either bad or dirty. It's job is to idle your vehicle up when ac and or other acc are being used. Try cleaning it first also clean throttle plate and throat of throttle body around the plate. Hope this helps.

2 people found this helpful.
10

My truck was doing the same all i had to do was renove the throttle body and clean it really good with cleaner and it bever happened again.

1 people found this helpful.
6,005

Best fix is remove fuses #10 and #28, then remove your throttle body and clean with sensor safe spray like Seafoam. This will fix your problem, this is the most common problem with the GMT360 platform.

10

Same problem! Definitely clean the throttle body thoroughly and don't forget to "relearn the system" after or it will still idle rough. Here's a video on how to do that. https://youtu.be/wrSWi2_gltA

1 people found this helpful.
10

Removing fuses #10 and #28 for 15-30 minutes then replacing after the cleaning will also relearn the system without disconnecting the battery.

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