Question about 2004 GMC Sierra
Can someone tell me what prongs under the dash for a 2004 sierra pick up to jump to retrieve trouble codes
You shouldn't need to jumper anything; there is a standardized connector for code readers and it is generally on the driver's side under the dash.
Please don't try jumping anything in that connector, you may damage the ECU if you connect the wrong two pins.
Call any of the chain auto parts stores and ask if they will retrieve the codes for you. This is widely available and is done at no charge.
Posted on Feb 25, 2009
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Posted on Jan 02, 2017
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