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MAP sensor problem?

Tiny
RICKYBOLEN89
  • MEMBER
  • 2008 GMC ENVOY
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 188,000 MILES
So, I bought the vehicle listed above that was missing the MAP sensor. I bought a sensor and installed it but now the vehicle won’t run. If I take the sensor back out it runs but rough.
Wednesday, October 19th, 2022 AT 1:07 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,512 POSTS
Changes are the MAP sensor is defective. If not, it sounds like the PCM is bad. Here is the location and instructions in the images below to help you change it out, you can find a rebuilt PCM by searching Google or eBay. Check out the images (below). Please let us know what happens.
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Wednesday, October 19th, 2022 AT 10:16 AM

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