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Danny, GMC Technician
Category: GM
Satisfied Customers: 5064
Experience:  Fleet mech with gmc vehicles as our primary service auto's
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1992 GMC Sonoma: heater online manual to explain

Resolved Question:

1992 GMC Sonoma heater core replacement. Will there be an online manual to explain how to do that job?
Submitted: 7 years ago via OnlineAutoRepair.
Category: GM
Expert:  Danny replied 7 years ago.

Remove or Disconnect

  1. Engine coolant.
    • Drain enough coolant into a clean container to lower the coolant level below the level of the lowest heater hose fitting.
  1. Heater hoses.
  2. Rear case screws.
  3. Rear case.
  4. Screws.
  1. Heater core from front case.
  2. Seals

Install or Connect

  1. Seals
  2. Heater core from front case.
  3. Brackets.
  4. Screws.
  5. Rear case.
  6. Rear case screws.
  7. Heater hoses.
  8. Engine coolant.
    • Use the coolant drained earlier only if it is uncontaminated. Discard contaminated coolant and add fresh 50/50 coolant and water mixture.




Be back with more

Expert:  Danny replied 7 years ago.
I have put a request in as they didnt supply location disasembly. may take a bit ok
Customer: replied 7 years ago.
Hi Danny, Thanks for your help. I don't see the button to push, how do I pay you? It's really good stuff that you sent, Davei
Expert:  Danny replied 7 years ago.
Danny and 2 other GM Specialists are ready to help you