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Problems with 1999 Chevrolet Silverado 1500 ENGINE

On average, the 1999 Chevrolet Silverado 1500 starts to “feel” problems with the ENGINE and its various aspects after 141 000 miles.

Recently reported ENGINE problems on 1999 Chevrolet Silverado 1500

Tl* the contact owns a 1999 chevrolet silverado 1500. the contact heard an abnormal knocking noise while starting the vehicle. in addition, the driver and passenger side plastic rollers were fractured and caused the seats to move. there were no warning indicators illuminated. the local dealer was not contacted. the vehicle was not diagnosed or repaired. the manufacturer was not contacted. the failure mileage was 142,000.

Passlock system engages without cause. when starting my truck, it acts like it will and then shuts down after a second, and then the security light comes on. this is common with past lock system errors. this happens about 1 out of 4 starts. to get the car started, i have to go through a reset process that takes over 30 min, which causes battery drain. this has left myself and family members stranded in unsafe situations several times. most recently i was stuck on the side of the highway, after stopping to change a flat at 11pm. after not starting with these same symtoms, while trying to do the 30min. relearn process, the battery did not have enough to start the truck. so i was then stuck there for 3 more hours waiting on a tow truck for a jump. i was stranded for over 3 1/2 hours. this issue has been happening for the last 2 years, and have spent about 4k dollars to try and fix it.

Tl* the contact owns a 1999 chevrolet silverado 1500 (gmt800). while the vehicle was stationary, an abnormal odor was detected inside the cabin. the contact attempted to open the hood, but the latch failed to release the hood. also, flames were seen underneath the hood. the contact believed the fire originated from the fuse box, which burned the engine wire harness. the fire was extinguished by the fire department. a police report was filed. there were no injuries sustained. the vehicle was towed to the contact's residence. the vehicle was not destroyed. the vehicle was not taken to a dealer or independent mechanic for diagnostic testing or repair. the manufacturer was not made aware of the failures. the failure mileage was unknown.

Noticed that the front left exhaust manifold bolt broke off; no one has ever touched this part so the bolt was installed as original. searching the internet i found this is a major -- and known -- problem affecting millions of these engines. the patter starts with a bolt or two then culminates with more broken bolts, an exhaust leak, overheated catalytic converter, damaged parts and potential fires. *tr

Exhaust manifold bolts breaking by themselves, the heads have fallen off leading to exhaust leaking! *tr

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