Question about 2003 Chevrolet Suburban 1500

1 Answer

Engine dies at highway cruising speeds

2003 Suburban 1500: engine died at cruising speed ( 65-70 mph) twice in last week (June 2009). Coasted to off-ramp ( I was on Interstate hwy)
and on to feeder road, put the car in park and it started fine and drove
home (35 miles) with no more problems. Next day, problem occurred
again, only this time it took several cranking cycles to start. Both times
the temperature here in Houston was extremely hot (100-102 degrees)
and the car had been driven at least 30 minutes in each case. No check-engine warning lights appeared.

My first conclusion was that it was an ignition problem, since the engine quit instantly.If it had been a fuel problem( vapor lock, for exam-
le), I would think the engine would have died more slowly due to resi-
dual fuel in the lines. Before I start my diagnostics, I would like to know
if someone has had a similar problem, and could offer suggestions.

Milton Gerdes in Houston,TX

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 113 Answers

Have fuel pump pressure checked 50-60 Psi at idle 60PSI with vac line diconnected from pressure regulator. If that checks out check for ingation switch failier may be keeps car power on but telling ecm that it has been turned from run. Also have a wave form done on fuel pump as it can still have good pressure but not be fully funtional elctricly. if you have acsses to a tech 2 have it checked for codes as it may not have turned on the light but may have stored a code

Posted on Sep 01, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Traveling down highway, trying to pass when message is displayed saying speed limited to 80 mph.

take it to a service dealer centre and have the speed limiter in the ECM reprogrammed
Check the fault codes while you are there to see if there are faulty sensors as well

Jun 19, 2015 | 2006 Cadillac SRX

1 Answer

Gm diesel 6 5

Have to service these a lot it's the MAP sensor ( manifold absolute pressure sensor ) this should fixya.


Nov 25, 2013 | 1999 GMC Suburban

1 Answer

Gm diesel 6 5

pump pressure is too low
should be around the 22,000 psi mark needed to crack the injectors
indicates that the there is a fuel supply problem to the pump or pressure regulation from the pump

Jul 21, 2017 | 1999 GMC Suburban

1 Answer

I own a 98 Wrangler Spt, 5 speed manual tranny, with 85,000 miles. Driving home from work last week on the highway at approximately 70 MPH the vehicle completely lost power and coasted to a stop. Kind...

I would look at the ignition system. Possibly a faulty ignition module or coil ( if you have a single coil ) Multiple it will generally be one coil that goes bad and results in a misfire code. Or if it's the ignition module it might not throw a code at all, And it might test fine if it's had a chance to cool down before it's tested.

Jan 21, 2011 | Jeep Wrangler Cars & Trucks

1 Answer

I have a 2003 Yukon XL 1500 with the 5.3L engine. Twice in the last week when I was on the Interstate and had the cruise control on the vehicle unexpectedly stalled and I had to guide it to the shoulder....

there are a few causes for this to happen
I just put a fuel pump in yesterday in a 04 yokon XL with the same issue
it had a plugged fuel filter, and low fuel pressure.
Same complaint, coming from CA to TX, freeway speed cruise on and it just dies.

The vehilce needs to be looked at, and have vehilce scanned for codes.

I hope this helps.

Aug 05, 2009 | 2003 GMC Yukon XL

1 Answer

Suburban dies at highway speed

It sounds like a fuel pump getting weak and hot. First check the ground wire at the fuel pump pigtail. and replace the fuel fiter.

Jul 27, 2009 | 2003 Chevrolet Suburban 1500

1 Answer

Engine dies at freeway speeds

check the coil pack and check that the exhaust at the converter is not clogged ive seen cars where the muffler is clogged and the car runs like ****, also seen a muffler colapse

Jul 03, 2009 | 2003 Chevrolet Suburban 1500

Not finding what you are looking for?
2003 Chevrolet Suburban 1500 Logo

243 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

80417 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides