Why does my GMC Sierra stall at 30 mph?

Never threw a service engine light or a code and would readily re start. 2 weeks ago it quit at 30 mph, wouldn’t restart and SES lit up. Code indicated crank positioning sensor. Had it replaced and so far so good. If yours behaves as mine did it could be a while before you get a traceable code. I own a 1998 GM Sierra 5.7L 2wd automatic.

What is the yellow light on a GM starter interrupt?

In this article, we are concentrating on factory-installed GM starter interrupt systems. This type of anti-theft system is designed to prevent the vehicle from starting unless the correct ignition key is used. These systems used a dash-mounted “security” or “theft” light which can be yellow or red in color.

What to do when your GMC Sierra stops running?

If you have fuel pressure after the above tests pull a spark plug and check for spark. If you don’t have spark check the cam position sensor in the distributor. If you have spark with no pressure it is the pump.

What to do if your Chevy Silverado is stalling?

Reconnect the battery and run the engine and see if the problem goes away. Of course the check engine light will come on about the alternator being disconnected. It won’t be charging so you cant run it more than 10-15 minutes, but its only a test. If this fails, reconnect everything. Borrow a scan tool from auto zone]

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

What’s the oil light on in my Jeep?

Come to a stop, “ding” on. Begin driving… well, you get the point. It’s a 2005 5.7 with 122222 miles on it. I checked the oil and it’s on the lower end of the “safe” zone. Drives without hesitation and doesn’t sound like anything is really wrong. I did a brief search and found talk about some oil sensor.

Why does my oil light keep coming on and off?

Replace the oil pressure sensor/sender if you have not already. Its the culprit 9 times outta ten. Replaced the oils pressure switch and it still is having problems. It will randomly die, then the oil light comes on. I can turn it back on right away but it keeps on reoccurring randomly.

What happens when your car runs out of oil?

If the engine is consuming all of its oil supply between changes, that indicates a few things, none of which are good: You are apparently not checking the oil frequently enough. When the oil level falls very low, the engine is starved for lubrication. The result of poor lubrication is increased engine wear.

How long has my Silverado Sierra been running?

We have had it for about 9 mos and put about 7k on it. Last week it started randomly stalling/dying, most times starting right back up. Then it died on my son and wouldn’t start. NO engines popping up. When I got to it I tried to go through the basics of troubleshooting- Turned on key to listen for fuel pump, pump came on.

What was the problem with my GMC Sierra?

August 2007, Brought truck into dealership and they figured it was a weak fuel pump and was replaced, September 2007 stalling of engine continued. NOV. 2007 dealership replaced ignition harness, and stalling continued. Dec. 2007 I replaced the battery and did a thourough cleaning of the battery terminals.

Why does my car stall at highway speeds?

The engine may start and idle fine, but run out of power or even stall at highway speeds. If the engine starts right back up after stalling, the likely cause is low fuel volume delivery because of a weak pump. If the engine is running normally one minute, but suddenly quits, loss of ignition may be the problem.

How to troubleshoot a GM 4.8L 5.3L?

You can find this tutorial in Spanish here: Cómo Diagnosticar y Resolver Una Falla en Cilindro (GM 4.8L, 5.3L, 6.0L) (at: autotecnico-online.com ). The core symptom of a misfire is rough idle. This isn’t the only symptom that your GM van, pickup or SUV might experience… here are some more that you might see:

What makes a GM 4.8L misfire engine stall?

P0306: Cylinder #6 Misfire. P0307: Cylinder #7 Misfire. P0308: Cylinder #8 Misfire. Really bad gas mileage. Lack of Power when you accelerate your van, pickup or SUV. Engine may start, run for a few minutes and stall.

When was the GMC Sierra 1500 last serviced?

Purchased on 07/06/03 and owned in CA until 05/20/21. Driven an estimated 9,954 miles/year. Last serviced at 172,386 miles in Vacaville, CA on 07/29/17 • Vehicle serviced. Mileage: 178,230 miles Body Type: Pickup Color: White Engine: 8 Cyl 5.3 L

How many miles does a GMC Sierra 1500 drive?

1st owner drove an estimated 21,786 miles/year • 2nd owner drove an estimated 11,124 miles/year • 3rd owner drove an estimated 6,808 miles/year • 4th owner drove an estimated 0 miles/year • 5th owner drove an estimated 2,463 miles/year.

Where did the GMC Sierra 1500 come from?

1st owner purchased on 04/16/03 and owned in UT until 04/13/05 • 2nd owner purchased on 12/02/08 and owned in CA until 03/31/09 • 3rd owner purchased on 03/31/09 and owned in CA until .

What does rough idle mean on a GMC Sierra?

rough idle, stalling, loss of power. o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so.

Why does my Chevy Silverado stall in reverse?

Sounds alot like a bad ground and/or battery connection problem. THe stalling in reverse could be caused by the movement of the engine in the opposite direction due to the reverse torque combined with a loose ground cable on the engine. Hope this helps.

What does a GMC Sierra 1500 idle like?

Today experienced a poping sound almost like a backfire from underneath. After the truck starts and is warm at a stable idle in park/neutral it’ll rev up fine. But the stable idle won’t last long, it’ll idle low and rough. Mpg has decreased drastically and give off a rich smell when running.

What does the fuel smell like in a GMC Sierra 1500?

If so pull the air filter off and sniff the throttle body for a fuel smell. If the diaphragm has ruptured it will literally be like putting a hose with fuel into the intake and running it full.

What causes a Chevy Silverado to stall at low speeds?

You might have a bad IAC valve. (idle air control valve) The PCM retracts the pintle in the valve constantly to maintain desired rpm idle, and rpm at low speeds. Its a 4 wire valve bolted on to the throttle body. If its a mechanical problem with the spring or pintle in the valve, it will not set a code for the IAC. If you decide to replace it.

Can a car stall if there is no DTC?

If your car’s computer hasn’t thrown any DTCs, you may want to check the following potential components or systems to find the fault. An engine can stall under different conditions, depending on the specific fault. For example, the engine may stall during acceleration, while idling, after reaching operating temperature, or stall intermittently.

What causes a car to stall when the torque converter fails?

Vincent Ciulla is a certified master automotive technician who has diagnosed and repaired light trucks, domestic and foreign cars, and diesel engines, for more than three decades. A common problem on many General Motors cars is the Torque Converter Clutch fails to release and causes the car to stall when it comes to a stop.

What is the diagnostic code for engine stall?

Diagnostic trouble codes P0120, P0121, P0122, P0123, and P0124 are what will commonly appear. The engine can stall for no reason and without any warning. This happens when the TPS gives incorrect information to the ECM. The engine can stall at high speed, at low speed, or even at idle.

Why does my GMC Sierra stall when idling?

Stalling continues and now more often when idling, warm or cold. During idling the engine sputters and surges before it stalls. The dealer ship figures that the stalling and the PRV are two seperate issues. The only code that comes up is the faulty PRV.

What’s the problem with my Chevy Silverado stalling?

REPLACEMENT OF CONNECTOR WHEN REPLACING FUEL TANK MODULE/FUEL PUMP MODULE. *TT ROUGH IDLE, SERVICE ENGINE SOON (SES)LIGHT, UNSTABLE IDLE, HESITATION, SURGE OR STALLING. WITH DIAGNOSTIC TROUBLE CODES P0300, P0335 OR P0336. *TT AIRFLOW SENSOR PROBLEM. *EH DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY. *EH

What’s the misfire code on a 1998 Vortec?

Can someone please help with what I should check next, I have a 1998 Chevy K1500 5.7 Vortec with a misfire, P0300 code for 3 months. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire.

Why is my Chevy Silverado in reduced power mode?

2003 Chevy Silverado 49,000 miles. Went to start the truck in the morning and the reduced engine power warning came on in the DIC. Manual says it comes on due to overheating and enters coolant protection mode. When I press the gas the truck will not accelerate.

Is there a problem with my GMC Sierra?

CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE. *TT P0420 AND P0430 DTSC IN THE DETROIT, MICHIGAN AREA WITH GEN III V-8 ENGINES.

What’s the low range setting on a GMC?

GMC models equipped with a two-speed transfer case also include a four-wheel drive setting known as “low range.”

What kind of engine does a GM 5.3L LMG have?

GM 5.3L V8 Vortec LMG Engine Specs Type: 5.3L Gen IV V8 Small Block Displacement: 5328cc (325 ci) Engine Orientation: Longitudinal Compression ratio: 9.6:1 Valve configuration: Overhead valves

Why does my GM Truck shut down while driving?

At a dead stop. It would crank over, but not start. Ran the battery dead trying to crank it. My dad came to help, charged the battery, and it started right up. It sounds wierd but this is what its doing.

How does a GMC Sierra 1500 fuel pump work?

The older model has steel lines coming off of the top of the pump to the frame rail and then connects to the frame steel lines with short hoses, you’ll need line wrenches and the ability to curse. The newer style has plastic tubes from the plastic pump casing and uses those quick connect fuel fittings and you’ll need the disconnect tool.

Can a Chevy Tahoe shut off while driving?

When driving tahoe the engine shuts off sometimes can restart, but now it took 24 hrs before restarting chevy garage check codes nothing Clicking this will make more experts see the question and we will remind you when it gets answered.

How to stop a Duramax truck from losing Prime?

Tried running fuel line from injection pump to tank of diesel.. No go Pressurized the fuel tank primed it and tried starting.. Nothing Pressurized fuel tank sprayed soap water on lines.. No leaks found Tried having someone prime while I cranked. Truck will run off starting fluid through airbox but dies when you stop spraying.

Why does my GMC Duramax not start up?

Sat in drive way moved it around a couple of times and parked it in the garage to do tcase. Almost two months later I finally finished it and now it won’t start. Acts like it will, fires up then dies right aways like the fuel shut off.

What happens when you Prime a Duramax Diesel?

It starts and runs really good for a few weeks or so after each fuel filter change then wont even start at all til i prime it and bleed it. Hope the new injectors fix this problem!

Why does my GMC Duramax die in the morning?

It starts decent during the day but in the morning it will barely start run for 1 second and completely die and wont start back up. I prime it and bleed it and then it will start. It does have air bubbles in the fuel line when i do bleed it.

Why does my GMC Sierra stall at 30 mph?