MAP sensor problem?

2008 GMC ENVOY

188,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC

RICKYBOLEN89

MEMBER
1 POST
FOLLOW

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.

Oct 19, 2022 at 1:07 AM

STRAILER

CERTIFIED EXPERT
53,854 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.

Images (Click to enlarge)

Oct 19, 2022 at 10:16 AM