Question about 1989 GMC Sierra

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My 1989 GMC z71 lost reverse - 1989 GMC Sierra

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Trans need repair

Posted on Apr 02, 2011


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How do I unlock 07 gmc sierra z71 radio

Try these hacks. If they don't work, a dealership has all the codes, and there is a website that sell radio codes based on serial number.

unlock 07 gmc sierra z71 radio Google Search

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No brake lights on a 94 gmc z71

have a look for loose or corroded connections at the lights themselves.

Oct 10, 2012 | Cars & Trucks

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95 Sierra gmc z71 won't go in reverse

could be the reverse planetary gear, which also runs 2nd and 4th gears.

Jun 27, 2012 | 1995 GMC Sierra

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My 1995 GMC z71 when the motor light comes on it starts idleing up and down it. Shifts ruff from reverse to drive and u have to put it to. The floor to get going and solutions?

Does it shift rough due to the idle speed of the engine? If I had to make a guess, it sound like the distributor cap has water in it or has melted a bit. Check into that. Could be a bad spark plug or wire too.

Jun 03, 2012 | 1993 GMC Sierra K1500

1 Answer

My 88 gmc z71 lost reverse and over drive at the same time happened 2days after I changed fluid and filter

when you droped the trans pan .... there was a magnet in the pan.... you didnt happen to move that did you? if you did metal shavings from wear and tear could get syphoned through the trans . also the magnet could also be blocking the ports for those gears...

Feb 12, 2012 | 1988 GMC C1500

1 Answer

1997 z71 keeps blowing the fuse. dash selector just blinks

Is there any other affected circuit ? The reverse light switch may be faulty seen as you have to pass thru Reverse to select a drive . Wiring can be damaged if off road conditions are extreme... Hope this helps

Mar 22, 2010 | 1997 GMC Sierra

1 Answer

My 1989 gmc half ton truck will die out when truck rpm or idle drops down.

happens mostly in reverse at very low speed. change spark plugs to an ngk, increese gap by 0.01 and advance distributer about 1 or 2 digrees to increase idle from around 800 to 850 or 900.

Jul 17, 2009 | 1989 GMC Suburban

1 Answer

Will 15 inch wheels fit a 1999 gmc sierra z71?

you have too get special rims made too clear the calipers

Mar 13, 2009 | 1999 GMC Sierra

1 Answer

Brake switch

dis-connect negative battery cable
the brake lite switch is located on the top of the brake pedal
unplug the electrical connection and pull the switch off of the pedal
to re-install reverse these steps

Oct 04, 2008 | 1989 GMC Sierra

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