Engine stumbles

Asked by GuruLBSNJ Apr 04, 2019 at 02:41 AM about the 2001 GMC Sierra 2500HD 4 Dr SL 4WD Extended Cab LB HD

Question type: Maintenance & Repair

2001 GMC sierra 2500 hd 8.1l. Started using it in couple
months ago starts fine at minus 30. Now its 40 above zero
and takes 4 tries to start up. New fuel pump and filter as of
November 18'

2 Answers
9,760

Mike answered 5 years ago

My best guess is the ECT sensor. That's the engine coolant temperature sensor, if you can get it hooked to. Scanner that reads data stream you should be able to read it, when they go bad they usually read -40.

Mark helpful

Your Answer:

Related Questions

  • Engine stumbles 2 Answers

    2001 GMC sierra 2500 hd 8.1l. Started using it in couple months ago starts fine at minus 30. Now its 40 above zero and takes 4 tries to start up. New fuel pump and filter as of November 18'

    2001 GMC Sierra 2500HD 4 Dr SL 4WD Extended Cab LB HD

    -

    Maintenance & Repair

  • Engine not starting / and other weird symptoms 1 Answer

    Hi there, the truck in question hadn't been started in two or three weeks because we haven't gone anywhere. Here's what happened when I tried to start it two days ago. 1) It sounded like the engine...

    2016 GMC Sierra 2500HD

    -

    Maintenance & Repair

  • Engine hissing noise 1 Answer

    Hello, I have a 01 GMC Sierra 2500 with the 8.1 liter V8. Did some driving in 90 degree weather, After shutting the engine off I heard a hissing sound coming from the engine for a few seconds afte...

    2001 GMC Sierra 2500HD

    -

    Maintenance & Repair

  • 89 gmc sierra 2500 5.7 the check engine light blinks rapidly with the engine running or not. What does it mean? 1 Answer

    Have replaced plugs, wires, dist cap and rotor, and the pcv valve. Valves clatter on acceleration. Check engine light flashes continuously when ignition is on with engine running or not

    GMC Sierra 2500HD

    -

    Maintenance & Repair

  • 10 mpg with new Jasper engine & transmission 3 Answers

    1993 GMC Sierra runs rich. ALL components new and I mean everything, Jasper 5.7 engine and transmission. I have talked to several full time mechanics and nobody has an answer?????

    2001 GMC Sierra 2500HD 2 Dr SL 4WD Standard Cab LB HD

    -

    Maintenance & Repair

Shortcuts

Search GMC Sierra 2500HD Questions

CarGurus Experts

  • #1
    Gilbert Tijerina
    Reputation
    490
  • #2
    BoholMark
    Reputation
    460
  • #3
    Marcus Victorius
    Reputation
    410
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 2500HD
28 Great Deals out of 1,243 listings starting at $9,500
Used GMC Sierra 1500
132 Great Deals out of 6,515 listings starting at $3,975
Used Ford F-250 Super Duty
18 Great Deals out of 1,178 listings starting at $8,995
Used Chevrolet Silverado 1500
222 Great Deals out of 5,872 listings starting at $2,975
Used Ford F-150
320 Great Deals out of 13,991 listings starting at $1,712
Used Dodge RAM 2500
17 listings starting at $7,900
Used Ford F-350 Super Duty
51 Great Deals out of 2,708 listings starting at $6,996
Used Toyota Tundra
30 Great Deals out of 1,367 listings starting at $6,255
Used GMC Yukon
14 Great Deals out of 904 listings starting at $4,555

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.