2006 Yukon XL 2500 6.0L dies/stutters at cruising speed randomly

[Doubeleive]

Battery cables and grounds look good. Got a mechanical gauge and planning on checking the pressure this weekend. Drove it this morning for about 40 min without issue. I did clean the MAF and replaced the MAP sensor this past weekend. What pressures should I be looking at on the fuel pump when checking with the gauge? Thanks!

on the gmt800's it should be 50+ running

 

[jmlhd7]

on the gmt800's it should be 50+ running

alright, I had a short one and hooked it up last night but it was 60 psi at idle in the garage. waiting to get a longer hose and tape to the windshield while driving to see if it changes/drops much.

 

[Doubeleive]

alright, I had a short one and hooked it up last night but it was 60 psi at idle in the garage. waiting to get a longer hose and tape to the windshield while driving to see if it changes/drops much.

60 is healthy, but ya monitor it just to see if it is crapping out

 

[Bigburb3500]

Battery cables and grounds look good. Got a mechanical gauge and planning on checking the pressure this weekend. Drove it this morning for about 40 min without issue. I did clean the MAF and replaced the MAP sensor this past weekend. What pressures should I be looking at on the fuel pump when checking with the gauge? Thanks!

I had a bad MAF on mine as well. Whenever it would rain or super high humidity the engine would cut out.

 

[Fless]

Start at the link below but use the links at the top of the browser to move to the correct section for your SUV.

Fuel System Diagnosis — 2006 GMC Yukon XL 2500 4WD V8-6.0L VIN N Service Manual | Operation CHARM

Detailed repair manual for the 2006 GMC Yukon XL 2500 4WD V8-6.0L VIN N.

charm.li