20 Most Recent 1991 GMC Sonoma - Page 6 Questions & Answers

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Firing order for v6 1991

firing order for a 2.8 liter v6 sonoma is 1,2,3,4,5,6. The number one cylinder is located on the passengers side closest to the cooling fan. The cylinders are numbered as follows: left side is 1,3,5. right side is 2,4,6. On the distributor cap, the number one position is located at the 7 o'clock position and it rotates clockwise.

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10/2/2011 1:05:28 AM • 1991 GMC Sonoma • Answered on Oct 02, 2011

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What is the firing order for a 1991 2.5 Sonoma

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Be the first to answer 9/29/2011 11:19:05 PM • 1991 GMC Sonoma • Posted on Sep 29, 2011 • Be the first to answer

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My engine occasionally misses and a rough idle

My 1993 caprice had the same issue.
Would it happen to down shift out of overdrive on the slitest incline.
if so, one of your plugs is missing under load. Mine turned out to be a wire.

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9/28/2011 4:00:21 AM • 1991 GMC Sonoma • Answered on Sep 28, 2011

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I need Firing sequence for

Firing order for a 1991 GMC Sonoma 4.3 liter v-6 is 1-6-5-4-3-2.

The number one plug is the first one facing you on the right and the last plug to fire is the first one facing you on the left. The rotor button spins counter clockwise.

Hope this helps (remeber to rate and comment this answer).

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9/20/2011 2:50:48 AM • 1991 GMC Sonoma • Answered on Sep 20, 2011

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Truck runs good until you

in park or neutral? normal.

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9/13/2011 4:52:27 PM • 1991 GMC Sonoma • Answered on Sep 13, 2011

tip

GM OBD1 Codes

DTC - 12 No distributor reference pulse (diagnostic test active)

DTC - 13 Oxygen sensor circuit open or no activity

DTC - 13 Left bank O2 sensor circuit open or no activity

DTC - 14 Engine coolant temp sensor error (high temp indicated)

DTC - 15 Engine coolant temp sensor error (low temp indicated)

DTC - 16 System voltage too low

DTC - 17 Camshaft position sensor error

DTC - 21 Throttle Position sensor error (signal high)

DTC - 22 Throttle position sensor error (signal low)

DTC - 23 Intake air temp sensor error (low temp indicated)

DTC - 24 Vehicle speed sensor error (open circuit or no activity)

DTC - 25 Intake air temp sensor error (high temp indicated)

DTC - 26 Quad Driver Module (QDM A) error

DTC - 28 Auto transmission range pressure switch error

DTC - 31 Wastegate solenoid circuit error

DTC - 31 Gear Position Switch (PRNDL) error

DTC - 32 EGR system failure

DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)

DTC - 34 MAP sensor circuit error (signal low indicating high vacuum)

DTC - 35 IAC problem or idle error

DTC - 36 MAF sensor error

DTC - 36 24x Crankshaft position sensor circuit error

DTC - 36 4T60-E Shifting Error

DTC - 37 TCC brake switch circuit error

DTC - 38 TCC brake switch circuit error

DTC - 39 Clutch switch circuit error

DTC - 39 TCC error

on Sep 10, 2011 • 1991 GMC Sonoma

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Gmail.comHow to replace steering column

Thiscompany has pdf & video instructions on their website to give you firsthand viewing of how to remove, disassemble, and reassemble the tilt column youare talking about. They are broken down into step by step detailedinstructions. Although the instructions are not for your exact car, the columnis very similar to yours. http://www.steeringcolumnservices.com/steering-column-repair-how-to-instructions/gm-buick-cadillac-chevrolet-oldsmobile-pontiac.php Ihope these instructions can help you. Lastly, if you need parts to repair this column simply locate the partand you can purchase it directly through their shopping cart. They stock just about everything you wouldneed to repair your car properly. Goodluck

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9/4/2011 1:31:47 PM • 1991 GMC Sonoma • Answered on Sep 04, 2011

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AC compressor cuts off when

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Be the first to answer 8/22/2011 5:19:03 PM • 1991 GMC Sonoma • Posted on Aug 22, 2011 • Be the first to answer

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Note: Previously for about 3

take the starter out then take a crow bar and try to turn the flywheel if it dont turn then the engine is tied up if it does turn then look at the teeth on flywheel and see if any are missing if thay are repace the flywheel if not check the starter teeth for missing ones if none are gone then have the starter bench tested make sure the bendex on the starter is kicking the gear out if not then you need to replace the starter

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8/1/2011 9:09:55 PM • 1991 GMC Sonoma • Answered on Aug 01, 2011

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Injectors wont spary fule and

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Be the first to answer 7/25/2011 10:07:27 PM • 1991 GMC Sonoma • Posted on Jul 25, 2011 • Be the first to answer

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Will a stock transmission fit on a 305 small block

Not a stock 1991 GMC Sonoma transmission. They're made to fit a V6, not a V8.
(With a 4.3Liter V6 engine)

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7/19/2011 2:48:07 AM • 1991 GMC Sonoma • Answered on Jul 19, 2011

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I took apart my 1991 gmc truck steering column to

I can help.

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7/18/2011 2:19:29 PM • 1991 GMC Sonoma • Answered on Jul 18, 2011

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My 91 sonoma (s10) ext.cab,has

u need to replace the front brake pads..the noise u hear it the brake pad warning indicator tell u ur brake pads are about to start grinding into ur brake rotors.....

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7/16/2011 7:28:32 PM • 1991 GMC Sonoma • Answered on Jul 16, 2011

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Need to replace power window

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Be the first to answer 7/9/2011 2:35:01 PM • 1991 GMC Sonoma • Posted on Jul 09, 2011 • Be the first to answer

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My digital gasoline dash is

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Be the first to answer 7/8/2011 1:55:36 AM • 1991 GMC Sonoma • Posted on Jul 08, 2011 • Be the first to answer

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My truck wont start only will start after jump

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Be the first to answer 7/3/2011 11:23:37 PM • 1991 GMC Sonoma • Posted on Jul 03, 2011 • Be the first to answer

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I have a 1991 with 4.3 throttle body injection.

i think you are trying to say the engine will not idle? there are a couple of things that we used to see on these old engines, first the throttle body gasket used to get sucked into the intake and when this happened the engine would idle rough and stall to test for this take a can of carburetor cleaner and spray around the throttle body if there is a gasket leak the engine will rev up when the carburetor cleaner gets into the leak.

also we replaced allot of idle control valves on these models, and i mean a lot.

and lastly make sure the EGR valve is not stuck open, if it is it will cause the engine to stall at idle.

if i were a betting man i would bet on the idle control motor.

let me know if there is any thing else i can do for you.

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6/21/2011 5:45:11 PM • 1991 GMC Sonoma • Answered on Jun 21, 2011

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My 1991 GMC Sonoma 3,4

The fuses should be under the dash on the drivers side, the fuel filter is in the fuel line just ahead of the fuel tank.

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6/20/2011 2:04:01 AM • 1991 GMC Sonoma • Answered on Jun 20, 2011

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1991 gmc Sonoma has low

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Be the first to answer 5/30/2011 12:53:54 AM • 1991 GMC Sonoma • Posted on May 30, 2011 • Be the first to answer

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How do I replace the

I believe its 1 serpintine belt .. take tention off belt w/ 1/2 drive ratchet ay tention pully .. take pic of belt before you start or look at dia. on fan shroud.. + replace..

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3/26/2011 1:12:31 AM • 1991 GMC Sonoma • Answered on Mar 26, 2011

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