GMC Troubleshooting Questions? Ask a Mechanic for Answers
sorry for the delay.............Greetings...... “Hi, I’m Don (aka MOLurch) and I look forward to helping you!”.If it is under the Hood Latch behind the Grill, that would be the Transmission CoolerIf it is near the engine, then that would be the Power Steering Pump / Reservoir
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sorry......did not see that..........you now say it is middle of vehicle from driver door?Not up front?
let me have a look at some diagrams
not seeing what you describe, but that does not mean there could not be a part there that may be needing attention & / or tightening to keep the fluid from leakingIf you could post a picture or have a look at it to see if any bolts can be tightened