GMC Sierra Questions Maintenance & Repair

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All Signals Work Except Left Rear On 1990 Sierra

all signals work except left rear, even after changing bulbs

4 views with 1 answer (last answer 2 weeks ago)

Rough Idle 99 Gmc K1500 5.7

Truck idles very rough but once it's over 30 mph it seems to drive just fine until stopping or slowing below 30mph. I have replaces plugs twice, wires, fuel oump, fuel filter, relay fuse, full dist...

2 views with 1 answer (last answer 5 months ago)
50

89 Gmc 2.5l

Put a new injector in my 89 gmc 2.5 liter and its like the injector is stuck open and dumps way to much fuel when I turn the fuel pump on. What's causing it

11 views with 3 answers (last answer 6 months ago)

Replaced A Plethora Of Parts And She Still Won't Act Right. Will Not Start ...

My truck won't start at all now. It will chug like it's trying to start (not clicking, my battery and alternator are both brand new). I've replaced the distributor in it's entire. Ignition control mod...

16 views with 1 answer (last answer 8 months ago)

Truck Won't Run

8 views with 2 answers (last answer 9 months ago)

What Are These Plugs

What art the two plugs behind the distributor on a 350 GMC Sierra 83 I know they have something to do with misfiring because my trucks running like crap

19 views with 1 answer (last answer 11 months ago)

Engine Repair

My 94 gmc v8 truck was running until one day I didn't check the water and apparently the pump broke but I'm not sure if I need to repair the whole engine or just the gas kits it was smoking when I ...

6 views with 1 answer (last answer about a year ago)

Starting A 1982 Gmc 6.2l Diesel That Has Been Sitting For Several Years

I need tips on how to start a 6.2L diesel engine that has been sitting for several years. Both batteries were bad and I have a single one in there now and hook up another vehicle to it with jumper c...

44 views with 1 answer (last answer about a year ago)

Is The Rear Differential, And The Front Differential The Same In A Gmc 3500...

I need to know if the front and rear axles from the late 70's to early 80's GMC 3/4 ton and 1 ton 4X4 pickups are the same, besides gear ratios? Let me know... shawnjo6565@yahoo.com

25 views with 1 answer (last answer about a year ago)

How To Remove The Steering Wheel Column Cover

2002 Denali

27 views with 1 answer (last answer about a year ago)

Temp Gauge

Temp gauge pegs to far right, engine cold or hot

27 views with 1 answer (last answer about a year ago)

Do I Have A Cam On 5.7 Gmc 96 Sierra

13 views with 1 answer (last answer about a year ago)

Truck Stalls Will Not Start Again After Engine Warms Up

my 1992 gmc sierra truck will start up with no problems when the engine is cooled and been sitting for a while. However after driving it for a bit and the engine gets warm, it stalls and will not re...

30 views with 2 answers (last answer about a year ago)

I Have A 1999 Gmc Sierra 1500 4.3l. It Start Good, After About 20 Seconds I...

16 views with 6 answers (last answer about a year ago)

97 Gmc Sierra Won't Start

I drive this truck in frequently. Last time was April of this year. It started but with difficulty. I tried to start it again in July and it didn't start. It has been extremely rainy and humid more so...

72 views with 1 answer (last answer about a year ago)
20

Where Is The Speedometer Wires To The Tranny Located Or Where Do Any Speedo...

NO Speedometer and wont shift outta low gear!!

78 views with 3 answers (last answer about a year ago)
5

Where's The Ecu And How Hard Is It To Change?

I have an 1989 2500 with a 5.7 2wd. I'm not a mech. Got any tips or advice? A how to video would be great

40 views with 1 answer (last answer about a year ago)

1988 Gmc Sierra 5.7l 4wd Which Alternator Do I Need? 85 Amp? 100 Amp? ...

I have easily determined which alternator for an '03 silverado by the service parts identification codes in the glove box. Not finding that for the GMC. Any suggestions?

93 views with 2 answers (last answer about a year ago)

Does Tank Need Replaced

my pickup shuts down when gas under quarter tank has to sit for five minutes more or less acts if no gas present prior to the wait ,can pump excelarator some times a short start but cuts back off ....

14 views with 2 answers (last answer about a year ago)
10

Hello My Name Is Casen I Have This Truck Here Its A Gmc 1997 And Dont Have ...

42 views with 4 answers (last answer about a year ago)
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