Engine died at 75 mph

Asked by Jan 11, 2016 at 10:05 PM

Question type: Maintenance & Repair

2007 Yukon XL Denali w/ 6.2. Well maintained
vehicle, stopped for gas, got back on highway.
About a mile later, loud, rapid knocking/ banging
sound from under the hood (sounded like fan was
hitting something), engine dies while at 75 mph.
Drift to shoulder, pop hood, everything looks to be
intact, no fluids on the ground. Wait a few minutes,
crank it and it catches for a few seconds, but
barely, it's obviously struggling to get going, but can
hear loud knocking (like two metal objects hitting
each other) then dies again. Any suggestions?

4 Answers

35,135

Did your oil light come on? You may have a bad rod bearing. The noise is called a rod knock.

Best Answer

No warning lights at all. It's been a mechanically sound vehicle. It's been maintained religiously. I'm very taken aback by the situation. Thanks for your input.

31,625

Sounds like something broke in the bottom of the engine. Not good....

Torque screws for the transmission

Your Answer

Add photo

Related Questions

  • I have a slight vibration in my rear end as im accelerating past 75 mph? 9 answers

    No vibration 75 mph down. Its not the tires as i just got them rotated and balanced. Its not the transfer case or drive shaft as i got both new last year (2014). As soon i let off the gas the vibratio...

    2002 GMC Sierra 2500HD 4 Dr SLE 4WD Crew Cab SB HD

    -

    Maintenance & Repair

  • 95 GMC suburban 5.7 won't start no spark, sputtered backfire ran fine died 4 answers

    95 Suburban sputters/loses power, backfires Loud, now won't start. I have a 1995 gmc suburban 5.7 350 v8 k1500, bought it in 2001 and ran perfectly fine with regular tune ups and maintenance , ne...

    1995 GMC Suburban K1500 4WD

    -

    Maintenance & Repair

  • Engine shuts off , new fuel pump, a lot of new parts, ign switch, computer etc. Any ideas?? 5 answers

    This thing was running rough and started to stall once in a while. Found low fuel pressure so we changed the the pump. pressure is good but it still cut out. Sometimes after it is warm it will shut...

    GMC C/K 15

    -

    Maintenance & Repair

  • 1996 gmc sierra check engine light comes on over 50 mph 1 answer

    im thinking about buying this vehicle but dont know how much it might cost to fix the problem. any insights would be greatly appreciated

    1996 GMC Sierra 1500

    -

    Maintenance & Repair

  • It just died. 4 answers

    My wife stopped to check the mail on the way into town and moderately increased speed to 45 mph on the way to hiway speed when the car died without any indication. Did not 'cut out' or 'sputter. Simpl...

    1993 Chrysler Le Baron GTC Convertible

    -

    Maintenance & Repair

GMC

Looking for a Used GMC in your area?

CarGurus has 205,008 nationwide GMC listings starting at $1,488.

ZIP:

Search GMC Questions

GMC Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,500
#2 John Saffrahn
John Saffrahn
Reputation 3,950
#3 Richard Schroer
Richard Schroer
Reputation 3,370
View All