2007 Chevrolet Silverado Engine Problems

The contact owns a 2007 Chevrolet Silverado 1500. While driving at an undisclosed speed, there was an abnormal, pungent odor coming from the vehicle. The contact was unsure if any warning lights were illuminated. On a separate occasion, the vehicle drove roughly with an abnormal sound coming from the engine. Additionally, the engine was consuming an excessive amount of engine oil. The contact had to add seven quarts of oil for every 3,000 miles driven. The vehicle was towed to an independent mechanic who diagnosed that the Active Fuel Management (AFM) system had failed. The engine was replaced. The manufacturer was not made aware of the failure. The failure mileage was unknown.

The Active Fuel Management Lifters can cause catastrophic failures by getting stuck in the closed position causing low oil pressure, misfiring, and ticking due to the entire AFM system making the camshaft and valve train wear faster. It is available for inspection upon request. My safety is put at risk due to the possibility of causing accidents or leaving me stranded in an extreme environment. Issues with AFM (Active Fuel Management) systems in certain GM vehicles have been widely reported and confirmed by both dealers and independent service centers. Specifically, AFM lifter failures and related issues, particularly in older models, are common diagnose The vehicle component has not been inspected by anyone. There was a low oil pressure warning light along with lifter tick prior to failure and first appeared at around 160k miles.

Cylinder 6 misfire. The mechanics have replaced everything that could be triggering the cylinder 6 misfire and still it is having problems they said the only way to fix it is to replace the engine but I should not have to replace an engine with low miles and that has been babied. I have also looked on multiple sites with people who own the same truck and all have the same exact problem with the same cylinder. Something needs to be done about this issue especially if it’s a reoccurring one, either have a recall on it and fix it or something.

The contact owns a 2007 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the RPMs increased rapidly; however, the vehicle lost significant motive power, after which the check engine warning light illuminated. The contact was able to pull to the shoulder of the roadway, where the failure persisted. The vehicle was taken to an independent mechanic, who diagnosed a failure with the engine, requiring that the engine be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but did not assist. The failure mileage was 185,000.

The truck has the 5.3l engine which is DOD equipped and the DOD system causes lifters to fail and can ultimately destroy the engine while driving I had a lifter go bad and it causes the truck to run rough and smoke it's a major issue that happens in the 5.3l v8 engines something needs to be done cause it's causing major problems for any truck equipped with the DOD system.

The Trucks equipped with DOD system also known as Active Fuel Management in the V6 and the V8 engines cause the truck to consume more oil and cause lack of oil to the lifters which then fail and cause the truck to lose power and smoke really bad and can cause the truck to die while driving and when you love engine power it can cause an accident it's also can cause the more internal engine problems I have reported this issue before for and nothing has happened then problem needs to be fixed is a design flaw and can cause an accident which could also get someone killed along with the bad airbag on passenger side GM needs to take responsibility and fix this issue please for the safety of anyone who drives the the vehicles with the V6 or 5.3l V8 please get this issue recalled.

When I took my 2007 Chevrolet Silverado with 36,000iles for inspection I was informed that two monitors were not functioning. These were the O2 sensor and the O2 sensor heater. Everything else passed. I was told that these may have been subject to a recall.

The contact owned a 2007 Chevrolet Silverado. The contact stated while driving 65 mph, he saw smoke exiting from under the hood. The contact stated no warning light was illuminated. The contact was able to park on the side of the road and when checking under the hood, he saw the fire under the engine. The contact stated the fire department extinguished the fire. A fire report was filed. The police was called but no report was filed. The contact stated no one was injured nor sought medical attention. The vehicle was not drivable. The insurance deemed the vehicle a total loss. The vehicle was towed to his residence. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 130,000.

MOTOR AND OIL PROBLEM

TL* THE CONTACT OWNS A 2007 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE THE VEHICLE WAS IDLING IN PARK, THE VEHICLE LOSS MOTIVE POWER WITH THE CHECK ENGINE WARNING LIGHT ILLUMINATED. ADDITIONALLY, THE DASHBOARD WAS SEVERELY CRACKED. THE VEHICLE WAS TURNED OFF, RESTARTED AND OPERATED AS INTENDED. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED NOR REPAIRED. THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 165,000.

THE TRUCK IS IN EXCELLENT CONDITION AND HAS BEEN WELL-MAINTAINED. AT 127,000 THE ENGINE STARTED MAKING A NOISE DIAGNOSED AS LIFTER NOISE. WITHIN A HUNDRED MILES OR SO, WHILE DRIVING ON A HIGHWAY, IT STARTED TO MAKE A VERY LOUD NOISE, AND AGAIN DIAGNOSED AS LIFTERS ON AT LEAST 2 CYLINDERS NEEDING REPLACED. UPON THE ADVICE OF A 25+ YEAR GM MECHANIC I WILL BE REPLACING THE MOTOR AS THIS IS MOST COST EFFECTIVE AS WELL AS BUYING A PROGRAM CHIP TO BYPASS THE "ACTIVE FUEL MANAGEMENT" WHICH HAS CAUSED THE PROBLEM. THIS WAS ALSO RECOMMENDED AS GM HAS NOT ALTERED ANYTHING ENGINEERING WISE TO PREVENT THIS FROM HAPPENING ON A BRAND NEW MOTOR THAT WOULD BE PURCHASED FROM THEM. *TR

TL* THE CONTACT OWNS A 2007 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT TOOK THE VEHICLE TO A DEALER WHO DIAGNOSED THAT THE ENGINE SENSOR FAILED. THE VEHICLE WAS REPAIRED. THE FAILURE RECURRED SEVERAL TIMES AFTER THE REPAIR. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 30,000. THE VIN WAS NOT AVAILABLE. UPDATED 11/25/15*LJ UPDATED 12/03/15.*JB

2007 CHEVROLET SILVERADO. CONSUMER WRITES IN REGARDS TO LOSS OF POWER STEERING AND POWER BRAKES, WHILE DRIVING. *SMD THE CONSUMER STATED THE CAUSE OF THE PROBLEM, WAS A BROKEN SERPENTINE BELT.

DEFECTIVE EXHAUST MANIFOLD BOLTS. THE BOLT HEADS ARE BREAKING OFF OF MY 2007 CHEVY SILVERADO CREW CAB TRUCK. THIS IS A WELL MAINTAINED LIGHTLY USED TRUCK I USE FOR WORK. AFTER DISCOVERING THE PROBLEM, I WENT TO THE INTERNET TO SEARCH SOLUTIONS ON THIS PROBLEM AND THAT'S HOW I FOUND OUT THAT THIS IS A VERY BIG PROBLEM WITH THIS TRUCK ENGINE. THERE IS NO TSB ON THIS OR A RECALL, BUT THERE SHOULD BE, ENGINES AFFECTED ARE ALL V-8'S FROM 4.8L, 5.3L, AND 6.0L. VERY EXPENSIVE REPAIR THAT SHOULDN'T HAVE HAPPENED IN THE FIRST PLACE. *JS

TL* THE CONTACT OWNS A 2007 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE ENGINE STALLED AS THE CHECK ENGINE LIGHT ILLUMINATED. THE VEHICLE WAS TOWED TO A CERTIFIED MECHANIC FOR INSPECTION WHERE THEY STATED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 150,000. THE VIN WAS UNAVAILABLE.

EXCESSIVE OIL CONSUMPTION--1QT EVERY 900 TO 1000 MILES. *TR

THE MANIFOLD BOLTS HAVE BROKEN OFF INTO THE HEAD OF THE ENGINE. RESULTING IN FAILURE OF SEAL TO HEAD FROM THE EXHAUST MANIFOLD. IN TURN, HAS CAUSED THE CATALYTIC CONVERTER TO FAIL AND NOW THE VEHICLE REQUIRES EXTENSIVE WORK TO PASS EMISSIONS TESTING IN CALIFORNIA. IT ONLY TAKES ONE BOLT TO BREAK ON THE EXHAUST MANIFOLD TO CAUSE THIS ISSUE. THE BOLTS ARE OBVIOUSLY THE WEAK LINK. THE ENGINEERING DESIGN NEEDS TO BE MODIFIED IMMEDIATELY. IT IS NOT LISTED AS A MAINTENANCE ITEM IN ANY GM OWNERS MANUAL. WHY SHOULD THE CONSUMER BE RESPONSIBLE FOR AN ITEM THAT CAUSES CATASTROPHIC FAILURE TO THE EMISSION SYSTEM, WHICH IS A MANDATED AND GOVERNED BY THE FEDERAL GOVERNMENT AND FEE'D ACCORDINGLY VIA STATE AND COUNTY GUIDELINES. *TR

TL* THE CONTACT OWNS A 2007 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING VARIOUS SPEEDS, HE HEARD A STRANGE NOISE. UPON INSPECTION, IT WAS FOUND THAT SEVERAL OF THE EXHAUST BOLTS WERE FRACTURED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS 73,000.

TL* THE CONTACT OWNS A 2007 CHEVROLET SILVERADO. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE SERVICE STABILITY TRACK AND THE CHECK ENGINE WARNING LIGHTS ILLUMINATED. THE CONTACT ALSO STATED THAT THE VEHICLE STARTED SHAKING ABNORMALLY. THE CONTACT TOOK THE VEHICLE TO A LOCAL MECHANIC FOR A DIAGNOSTIC TEST. THE MECHANIC ADVISED THAT THE SPARK PLUG AND THE COIL PACK NEEDED TO BE REPLACED. THE MECHANIC REPLACED THE COIL PACK AND SPARK PLUGS BUT THE REPAIR DID NOT REMEDY THE FAILURE. THE CONTACT TOOK THE VEHICLE TO A DEALER AND THE DEALER STATED CAM SHAFT AND LIFTERS MALFUNCTIONED IN THE ENGINE. THE DEALER DID NOT REPAIR THE CAM SHAFT AND LIFTERS. THE FAILURE MILEAGE WAS 140,000. THE VIN WAS NOT AVAILABLE.

TL* THE CONTACT OWNS A 2007 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE ENGINE MISFIRED, CAUSING THE VEHICLE TO STALL. THE CONTACT INSPECTED THE VEHICLE AND LOCATED THE FAILURE AT THE ELECTRONIC CONTROL MODULE (ECM). THE ECM WIRING HAD BECOME DISCONNECTED FROM THE PLASTIC INSULATION. THE CONTACT REPLACED THE ELECTRONIC CONTROL MODULE WIRING. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS 63,000.