1991 gmc sierra 3500 7.4l engine turns over won't start

Asked by tryn2Bamech Jun 15, 2017 at 10:17 AM about the 1991 GMC Sierra 3500 2 Dr C3500 SLE Extended Cab LB

Question type: Maintenance & Repair

A re-occurring issue with this truck. I'm sure if I change the ICM again it will start right up. just looking for additional information. The ones I replace always test good at the local Autozone. Maybe somebody else has had this issue.  

2 Answers

tryn2Bamech answered 6 years ago

Thanks tennisshoes, I might try that. Are the connectors carried at parts stores or is this a wrecking yard item.

Mark helpful

tryn2Bamech answered 6 years ago

I decided to go ahead with another ICM. It took a minute since I had modified the distributor cap attaching screws. Have to use nuts and bolts. Anyway as I thought it started right up. I will be tracking this issue. I would really like to know what's the real cause of the repeated failures. Thanks much for your help. If I decide to go your route I will certainly let you know. Right now I've got to replace my tailgate hinges. Hope they work as I ordered them on-line. Thanks again.

Mark helpful

Your Answer:

Related Questions

Sierra 3500

Looking for a Used Sierra 3500 in your area?

CarGurus has 4 nationwide Sierra 3500 listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search GMC Sierra 3500 Questions

CarGurus Experts

  • #1
    Jaime Moreno
    Reputation
    130
  • #2
    Ed92626
    Reputation
    100
  • #3
    Courier_608
    Reputation
    70
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500
3 listings
Used GMC Sierra 1500
143 Great Deals out of 8,222 listings starting at $3,000
Used Chevrolet C/K 3500
1 listing

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.