1995 GMC

Asked by Dec 16, 2017 at 09:53 PM about the GMC C/K 2500 Series

Question type: Maintenance & Repair

it's back firing losing power them picks back
up weird smell coming from exhaust that it
was cat so I took it off but stil doing same

5 Answers


sounds like it's dumping fuel , see if the injectors are firing normal or if one is stuck open , the cat is probably ruined any way , who needs it ? It may be part of the inspection , I have a 94 with straight exhaust for 5 years and never had a problem in the vampire state


I have a muffler , that's it

thank you ill try that in the mourning i was sure it was the cat but since i pulled it of today it worse

i have another tbi so its worth trying


Did you ever check the distributor? Check the cap for cracks and burned out contacts under the cap. How does the rotor look. Is it green and full of of junk. Check to see if the distributor hold down is still tight. If it is loose you are going to have to re-time the engine. Pull the distributor see if any teeth are missing from the gear. Look for metal in your oil. How are the plugs and wires? Check them to. See if any are broken crack or just missing a plug. They do happen to fall out sometimes. Are the spark plug wire old? They might be shorting out on the block.

Your Answer:

C/K 2500 Series

Looking for a Used C/K 2500 Series in your area?

CarGurus has 1 nationwide C/K 2500 Series listings and the tools to find you a great deal.

Postal Code:

GMC C/K 2500 Series Experts

  • #1
  • #2
    Tre-foe Tre-foe
  • #3
    Travis Morton
View All

Related Models For Sale

Used GMC Sierra 2500HD
16 Great Deals out of 1,561 listings starting at $4,995
Used Chevrolet Silverado 2500HD
13 Great Deals out of 1,551 listings starting at $4,495

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.