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I have a 94 gmc sierra 4x4 6.5l turbo diesel. i have feul problems replaced pmd, injector pump, lift pump, crank pos. sensor, checked connections and wires. still no feul press. leaving injector. The injector is good, thinking might be a sensor just dont know where to go form here. problem started when i tried to pass a truck on highway. Had cruise control on. When i let go of thottle it excellerated on its own for a few seconds then shut itself off. Tried to start it a few times truck would start rev up and die. now nothing, no feul pressure leaving pump.

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 94 GMC truck diesel starts,runs and then dies and will not start

I have the same problem and have trouble codes 35 and 36. I found out that there is a computer module that needs replaced as it sits low in a valley and gets hot and seperates. I am reseaching about the a/m fix that installs the new module away from heat.

Posted on Mar 12, 2009

  • 1 Answer

SOURCE: truck just shuts off

I own the same 3500 GMC 6.5 diesel truck with the same problem. We replaced the brain under the upper turbo hood and it fixed it pronto. No more shutoffs

Posted on Apr 01, 2009

abauto
  • 353 Answers

SOURCE: I have a 1996 GmC sierra with the 350 in it. The

Check the distributor cap. If it is corroded, any condensation may make it not start.

Posted on Jul 28, 2009

  • 753 Answers

SOURCE: Difficult starting in warm weather

Check the vacuum hose attached to the fuel pressure regulator under the hood next to your intake pull it off and see if any fuel is present, if there is replace regulator.you may have to tap hose with your finger to get any fuel out or start vehicle run until hot then shut off and recheck if no fuel present in vacuum line let me know and we can try something else.

Posted on Aug 23, 2009

  • 432 Answers

SOURCE: 1990 GMC Sierra 1500 pickup. Windshield wipers, Cruise Control

May want to look at replacing the wiper circuit board.It is located on the firewall adjacent to the wiper motor and has a some what square black cover with 3 torx screws and wireing harness pluged into the side.We had a truck that every time you washed it the wipers would stay on until it dryed out.You can try removing it and spaying it down with contact cleaner just watch the brease on the two contact tips.Well hope this helps.

Posted on Feb 05, 2010

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2 Answers

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