Automobile / GMC / 4x4

GMC 4x4 Truck Repair Questions and Answers

Question:  1997 GMC 1500 4x4 mileage: 132,000.  When stomp on gas it feels as if you are dragging an anchor, ok with light acceleration.  Also, sometimes will pop in intake.  Seems like lean fuel.  Fuel pressure & volume ok.  SES light was on.   I replaced one oxygen sensor & light went out, but problem still there.  No trouble code comes up on scanner.

Answer:    Check the fuel pump amp draw because if it is starting to fail, the amp draw will be high. More than likely your mass air flow sensor needs replaced.

Question:  2001 GMC 1500 4X4, miles 84,000. I noticed a small crack near the top of my radiator where radiator fluid has been slowly leaking out for the last two months. The car has not ever had a problem with overheating since I have owned it. Is there some way to seal it or does the radiator need to be replaced. What can cause a crack to happen and what is a reasonable price for repair?

Answer:  The radiator needs to be replaced. The tanks do crack due to stress and vibration. Replace the whole new radiator to avoid further repairs on the same radiator. 

Question:  1995 GMC 4x4  mileage: 150,000.  4x4 will not engage. Have checked servo motor, servo does not get any power, need wiring diagram please help its snowing pretty bad.

Answer:    We are sorry, but due to the large volume of questions we receive, we do not have time to print, scan and email diagrams.  A Mitchell or Chilton auto repair manual will have diagrams showing  wiring. Click here to find out more

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