• Tiny
  • Anonymous
  • 2004 GMC Sierra
  • 177,000 miles

My truck has a 5.3liter engine 4x4 1/2 ton, about two years ago a deer had hit the driver side of the bed, body shop did an excellent job of reparing but now I have a vaccum leak that I didnt have before, service engine light is on and it idles rough and there is a loss of power, before I start following the diagnostics machine and start swapping out parts, til I find it, I would like to chase down the vaccum system and see if its just a line that has popped off some where.

Friday, December 14th, 2012 AT 2:51 PM

1 Answer

  • Tiny
  • hmac300
  • Expert
  • 42,126 posts

Callout Component Name
1 Manifold Absolute Pressure (MAP) Sensor
2 EVAP Canister Purge Hose
3 EVAP Service Port
4 Positive Crankcase Ventilation (PCV) Valve
5 Throttle Body
6 EVAP Canister Purge Valve
7 AIR Module, if equipped

check by bed first, if it is on engine get choke cleaner and spray around hoses, intake etc.

Was this
Friday, December 14th, 2012 AT 2:57 PM

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