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When engine is idling the oil pressure sign can come up and that is OK. However if you've noticed that gauge shows much lower oil pressure that a bad sign. Show it to knowledgeable mechanic (but don't be lured in the engine replacement; ask for a root cause - it may be oil receiver or oil pump). Also I hope there's no oil puddles under the car? What about oil level?
Ihave an 98 bravada engine my 96 blazer its basicly the same vehicle but don't say what is not working all it says is were workin couple of days ago now pass side not workin is there a fuse2 this.If oyu can clairify this i have manauls for this vehicle
Is it ALL of the gauges? My wife's 2005 Envoy Denali had a problem with the gas gauge sending unit (in the tank) that made the gauge act erratic. Also, the check engine light would stay on alot. If it is all the gauges, then it may well be the dash unit. Hope that helps some.
The float that moves the gas hand is possibly stuck in the tank. If there's isn't an access hole in the rear of the vehicle you'll have to drop the tank. Unless it becomes free on it's own. Hope this is helpful. Please rate. Thanks