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has anybody faced any shortcut or bad connection on PMD harness?
How to check the entire (895 red )circuit if i´t's okay?

thanks:help:
 

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You might check the 15pin Inj Pump harness connector, there by the IP, as well as the larger connector at the firewall, see if any wires\pins are loose, frayed, oxidized, corroded, etc.

Also check frayed wiring down by the AC line where it goes thru the firewall into the cab.

Fuel Solenoid Pulse Width is not Closure Time - CT generates the DTC - so the PW time can indicate as correct, and still give CT errors.

Closure Time is how long it takes the FS to close, measured in micro-seconds.

Pulse Width is how long the FS should remain closed, measured in milli-seconds.

Low voltage, loose connections and worn Fuel Solenoid will give DTC36, which means the FS takes too long to close

Air\fuel bubbles in the IP usually cause DTC35, allowing the FS solenoid to close too quickly .

Also, if the FS was incorrectly adjusted during calibration, or the return spring is broken\collapsed, the FS will close too quickly and set DTC35

Either of these will result in early failure indicated by DTC35, tho the rest of the IP is still functional.

Most scanners read PW, not CT, so determining what is actually happening requires removing the IP to be checked on a flow bench.

Stanadyne repair shops and GM have a replacement Inj Pump harness, if yours appears bad.
 
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