GMC Sierra 1500 Questions Maintenance & Repair

Heater Only Blows Cold Air

I have a heater that is blowing cold air only. The heater hoses are warm. What is going on? I have checked the actuator it is working.

Oil Types Can I Use For My 2002 GMC Sierra 1/2 Ton

How many quarts of oil should I use and type of oil

Engine Replacement Options

2008 GMC 1500 4WD Auto tran with 220,000 miles dropped a lifter and am being told I should consider replacing original engine which has Electronic Fuel Management with Jasper engine set up to run full...

Gmc Head Gasket??

I'm thinking of buying this GMC does the appearance of the amount of water out of the tail pipes tell you there's an engine problem with the head gasket. He did say the engine light is on thanks

Ride Control

While driving on smooth highway I get intermittent vibration that lasts a few seconds. I seems like the ride control gets a false signal and responds. The problem will go away for a hundred miles and ...

Fuel Pump Relay

Is the engine suppose to start and run with the fuel pump relay removed?

Engine Swap

Will a 5.3l 04 sierra fit in an 06 gmc Sierra?

1989 Gmc Sierra Rebuilt Trans New Motor When Its Under A Load Pulling Somet...

truck has the 350 auto had trans rebuilt new motor.long has truck isnt pulling anything its fine but soon as it pulls something under a load going up hill truck will red line.starts to slow down.

Where Is A Fuel Pump Reset Switch For A 1999 Gmc Sierra C1500?

Where is a fuel reset switch

What's Wrong With My 2007 GMC Sierra

I have a 2007 GMC Sierra the transmission went out and I had to replace it in order to do that I had to cut the exsaust I put it back on but ever since it seems to have no power and misses I can b...

Brake Lights

Brake lights even the third brake light dont work on my 1997 GMC sierra Everything else works checked fuses and relay checked wires checked grounds checked bulbs replaced brake switch and still no...

Heater

Heat won't blow hot air. Worked fine last year

Spark Plug Layout

Need the layout to make sure I did this right because my truck is acting funny

Replaced 4l60 Won't Move In Gear

Replaced tranny filled with fluid starts but when you put it in gear and give it gas it doesn't move not even when you manually shift underneath

Have Problems With Idle On My Pick Up

I have a 94 gmc sierra c1500 4.3L I change out the head gaskets and when I put it back together I try to turn it on all it will do is crank and crank over but if I push acceleration pedal it will ...

Cata Converter

How long does it take to install a cat converter on 88 gmc pick up

Overheat

My truck has started to go to a point the thermometer on the dash would go to red and then back. I checked and there isn't leaking anywhere. The overflow shows there is fluid, but a a milky brown....

Speedometer

Speedometer stays on 30 mph when engine is off.

Transmission Issues

Engine

probable causes for coolant in the oil