What causes power loss in a 1990 gmc 3500 3speed when going up any kind of incline or small hills can be doing 60mph and bogs down to about 30mph

Asked by Aug 26, 2015 at 08:22 AM about the GMC C/K 3500 Series

Question type: Maintenance & Repair

2 Answers

17,320

Sounds like something in the gas tank is being sucked into the fuel pump filter.

19,755

yes..first check/change fuel filter/pressure...

Your Answer

Add photo

Related Questions

Search GMC C/K 3500 Series Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

GMC C/K 3500 Series Experts

Related Models For Sale

Used Chevrolet C/K 3500
4 Great Deals out of 283 listings starting at $2,995
Used GMC Sierra 3500HD
75 Great Deals out of 3,548 listings starting at $9,995
Used GMC Sierra 3500
7 Great Deals out of 306 listings starting at $7,300
Used Chevrolet C/K 2500
261 listings starting at $2,995
Used Chevrolet Silverado 2500HD
396 Great Deals out of 27,337 listings starting at $2,998
Used Chevrolet Silverado 3500HD
106 Great Deals out of 7,773 listings starting at $6,995
Used GMC Sierra 2500HD
152 Great Deals out of 13,288 listings starting at $3,500
Used GMC Savana Cargo
20 Great Deals out of 4,792 listings starting at $2,795
Used Ford F-150
3,136 Great Deals out of 208,989 listings starting at $1,200