GMC Sierra 3500 Questions Any type

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Drain On Battery

1988 gmc 3500, 454, need locations of all ground wires so we can check to make sure we dont have a bad ground somewhere, brand new battery, starter, alternator, cap, button, wires,and spark plugs,...

An A 2019 GMC DENALI 3500 4WD Be Flat Towed Behind A MOTORHOME?

Can a 2019 GMC 4WD DENALI 3500 be flat towed behind a MOTORHOME? Is there a transfer case for diengaging the transmission from the drive system?


Motor Swap

We have a 1994 GMC Sierra 3500 dulley the guy wants us to put a 350 motor in it without the wiring harness. .Can anyone tell me how I can get fire to this motor? We have the old one out and the 350...

Vent Issue 87 GMC

I have 87 GMC 3500 and I have pulled most of the dashboard off in order to see the vent doors. it appears that the doors are working. no air coming out the dashboard or defrost vents. there is high ...


Blown Fuse Link At Busbar

I found a blown fuse link that I assume goes to the starter, since nothing makes a sound when I try to start the truck. I need to know how to bypass the ignitionswich and put a push button to star...

Ive Got A Customer 04 GMC Sierra 3500 6.0L And Have Replaced Sensors The Sc...

04 GMC 3500 Sierra 6 litre engine running badly at idle it misses terribly. Under load driving, it has no power AND RUNS BAD MISSING. REVING IT UP WITH NO LOAD IT SOUNDS GOOD. tHE CODE READER SAID T...

GMC 3500

Engine gets fuel and spark on number 1 plug. Turns over but doesn't start. Sounded like it back fired last attempt. Any immediate ideas?? Trying timing right now.


The sensors on the driver's side continue to on and off randomly. What's the problem? (2015 Chevy Silverado Pick Up)

2010 Sierra 3500 Left Blinker And Brake Light

Need Value Of A Truck

2004 gmc 3500 8.1 engine SLT long bed 69,000 miles having trouble find fair price to buy this truck 2 owner 4x4 can send vin and link if that would help I know what they are asking but think for...

2000 Gmc Serria 3500

It died on me when trying to start it it backfires

04 Gmc Pickup Wont Shutoof With Key,,whats Up With This

truck engine keeps running with key off,,dash off,,,cant figure it out

Spark Plugs

What's the spark plug gap on this truck

1991 Gmc Sierra 3500 7.4l Engine Turns Over Won't Start

A re-occurring issue with this truck. I'm sure if I change the ICM again it will start right up. just looking for additional information. The ones I replace always test good at the local Autozone. May...

Stalling Out

My gmc 3500 will start up in the morning just fine. As I start to drive after a few miles it loses all fuel and dies. Then I try to start it and it just cranks and cranks and finally will start bu...

88 Gmc Van

the RMFD1 (the brain) keep burning out. it's getting warm then fails. Just put a new one in and it happened again. Please help

How Do I Now Whats Rong With My 98GMC Searra

When I try to start my truck it true to turn over but it shakes the motor . And it leaks oil

Will A 2007 Extended Cab Front End Fit A 2007 Regular Cab Front End?

Will A 2008 Gmc Sierra Extended Cab Front End Fit A 2008 Gmc Sierra Regular...


GMC 3500 350 Wont Stay Running Under Power Or In Gear

I have a 1994 GMC Sierra with 5.7L TBI . Issue is the truck will start and idle but as soon as you put into any gear the truck stalls out unless you give it gas, it will idle rough in gear however whe...

GMC Sierra 3500 Experts

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