Check engine light when towing and speed > 60mph
10

Asked by Prodigal15 Aug 14, 2015 at 05:47 PM about the 2003 Chevrolet Suburban 2500 4WD

Question type: Maintenance & Repair

The check engine indicator on my 2003 Suburban comes on periodically for a few
seconds.  This happens when I am towing a camper.  I have to first exceed 60mph,
then slow down.  When the engine is not under as much load, the check engine light
blinks on and off until it is under load again.  In other words, if I am accelerating or
maintaining my speed, nothing happens.  If I am coasting, the check engine indicator
blinks on and off.

This does not happen when I drive at or below 55 mph.  It also does not happen when I
am not towing the camper and driving at any speed.

2 Answers
10

Prodigal15 answered 8 years ago

There were several codes. The one I got this time and before is P0300 - cylinder misfire. I also got P1172 - fuel pump transfer flow insufficient - this time but never in the past when I had the codes checked.

1 people found this helpful.
Mark helpful
10

Prodigal15 answered 8 years ago

The fuel pump was replace in March 2014. The fuel filter was replaced in December 2015. Every long trip I take, I fill up with Premium from BP. Just did that a week ago. I doubt its the spark plugs but I can check that next.

Mark helpful

Your Answer:

Related Questions

  • Check engine light when towing and speed > 60mph 2 Answers

    The check engine indicator on my 2003 Suburban comes on periodically for a few seconds. This happens when I am towing a camper. I have to first exceed 60mph, then slow down. When the engine is no...

    2003 Chevrolet Suburban 2500 4WD

    -

    Maintenance & Repair

  • CHeck engine Light 4 Answers

    I was driving along and the check engine light came on---stopped at an auto parts chain store who did one of those computer diagnose checks. The results he said was transmission slippage. I have notic...

    2004 Chevrolet Suburban 1500 4WD

    -

    Maintenance & Repair

  • Check engine light 1 Answer

    Regarding check engine light ,any have same problem with me , about check engine on , check 1 day then off three or four day back on again , I scanned code is P2099 bank 2 I just change it oxygen s...

    2015 Chevrolet Suburban 1500 LT 4WD

    -

    Maintenance & Repair

  • High idle, hesitates when coasting, sensor reader isn't reading anything, check engine light stays on. 1 Answer

    Recently changed the plugs, wires, oil and fuel filter on a 95 chevy suburban. Runs rough, has high idle doesn't idle down, when coasting it feels as if someone is tapping on the brake cause the tr...

    1995 Chevrolet Suburban C1500 RWD

    -

    Maintenance & Repair

  • my 2007 Suburban oil pressure gage stopped working and now I have a check engine light on. Simple fix? 15 Answers

    2007 Suburban oil pressure gage stopped working and now I have a check engine light on. Simple fix?

    2007 Chevrolet Suburban 1500 LTZ 4WD

    -

    Maintenance & Repair

Suburban

Looking for a Used Suburban in your area?

CarGurus has 532 nationwide Suburban listings starting at $10,950.

Postal Code:

Shortcuts

Search Chevrolet Suburban Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    3,080
  • #2
    JimO65
    Reputation
    2,390
  • #3
    Rowefast
    Reputation
    2,130
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Yukon XL
12 Great Deals out of 726 listings starting at $11,500
Used Chevrolet Tahoe
11 Great Deals out of 832 listings starting at $9,980
Used Ford Expedition
18 Great Deals out of 664 listings starting at $7,894
Used GMC Yukon
12 Great Deals out of 972 listings starting at $3,000
Used Cadillac Escalade ESV
4 Great Deals out of 155 listings starting at $9,487
Used Cadillac Escalade
14 Great Deals out of 501 listings starting at $5,931
Used Chevrolet Silverado 1500
200 Great Deals out of 8,052 listings starting at $1,500
Used Toyota Sequoia
4 Great Deals out of 56 listings starting at $19,990
Used Lincoln Navigator
9 Great Deals out of 310 listings starting at $24,945
Used Ford F-150
325 Great Deals out of 13,693 listings starting at $3,800
Used Chevrolet Silverado 2500HD
26 Great Deals out of 1,696 listings starting at $3,000
Used Dodge Durango
57 Great Deals out of 1,890 listings starting at $6,987
Used GMC Sierra 1500
139 Great Deals out of 8,257 listings starting at $3,000
Used Ford Explorer
61 Great Deals out of 2,048 listings starting at $6,990

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.