Chevy Suburban Heater Troubleshooting

I have a 93 chevy suburban runs great, but i replaced the heater 96 chevy suburban...heater fan gets stuck sometimes. i tap blower box Heater blower only works on high. what causes it?

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Heater blows cold air just replaced module

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Heater blows cold air just replaced moduleI’m still trouble shooting my heater issues on93 suburban want to see Chevy suburban heater problems? q&a on 2001 & 2004 modelsHeater blows cold air just replaced module.

Heater blower only works on high. What causes it?

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Chevy suburban heater problems? q&a on 2001 & 2004 models

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