Question about 1993 Pontiac Bonneville

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A pontiac bonneville code 56

Computer code 56 keeps coming up on test computer

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Posted on Jan 02, 2017

inf12
  • 13 Answers

SOURCE: new battery now radio is locked on '94 Pontiac Bonneville.

you have to call the pontiac dealer parts dept and he will tell you how to get the code you may have to prove ownership for the car because the anti-theft is activated at this time

Posted on Feb 08, 2009

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1 Answer

What should fuel pressure be for 2005 Pontiac bonneville


48-56 psi...very common for fuel pumps...may have an access panel under the back seat some of the older buicks and Pontiac did

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Instructions on how to change a headlamp bulb are on page 5-56 in the 2003 Pontiac Bonneville Owner's Manual.
If you do not have an Owner's Manual, you can download a PDF version at the link below (direct link)
2003 Pontiac Owner's Manual

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Check vacuum lines at the throttle body for leaks if good then take EGR Valve off and clean carbon out with a non-chlornated brake cleaner.Then clear code from computer and if it comes back on check the fuel pressure it should be 48-55 psi with the key on and the engine off.If its not within these specs then the fuel pump is weak and needs to be replaced.

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Hi, my 01 Bonneville SSEI keeps saying check gas cap, then the check engine light comes on, I have replaced the gas cap and that did'nt fix it. Any suggestions? Thanks.


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Jun 10, 2011 | 1997 Pontiac Bonneville

1 Answer

How do you pull codes from a 98 bonneville


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Oct 23, 2009 | 1998 Pontiac Bonneville

2 Answers

My 1993 bonneville keeps shutting off when i come to a stop! help please!


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Sep 16, 2009 | 1993 Pontiac Bonneville

1 Answer

I ran my 98 bonneville out of gas. Now it is hard


try disconnecting the battery overnight. otherwise..you need a scan tool to read the codes and reset the computer

Jul 15, 2009 | 1998 Pontiac Bonneville

1 Answer

2004 Pontiac Bonneville Check Engine Light


do you fill the gas tank with the key on?

Try disconnecting the battery for 1/2 hour an then reconnect and drive for 10 miles. It may run rough for this period. This will clear codes from memory.

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2 Answers

NY 1996 Pontiac Bonneville SSEi diagnostic trouble codes P0301 and P1441


Since it is a 1996, you probably have high miles on it.
Most cars after 100,000 miles or so are automatically set to have the check engine light come on.

Check these sites click here and here

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