saar

Hey everyone recently my Mack started losing power and started sounding as if it is having a misfire whenever I go above 40 miles an hour I tested if there was a boost leak there isn’t one. This only happens when the engine is underload on an incline. Otherwise, when the truck is empty, everything seems fine.

On 7/10/2019 at 12:34 AM, 41chevy said:

Cluster fix-1.pdf 191.62 kB · 22 downloads

Could be a simple deal of pulling the plugs cleaning with contact cleaner and a light coat of dielectric grease Also look for loose pins on cluster where plugs connect.  other wise look at the pdf

The pdf covers a known issue and it apparently goes up to 2006 or 07.

Do you have the complete pin assignment for the plug or dashboard