Questions tagged [gm]

General Motors Company, commonly known as GM, is an American multinational corporation headquartered in Detroit, Michigan, that designs, manufactures, markets and distributes vehicles and vehicle parts and sells financial services. General Motors produces vehicles in 37 countries under thirteen brands: Alpheon, Chevrolet, Buick, GMC, Cadillac, Holden, HSV, Opel, Vauxhall, Wuling, Baojun, Jie Fang, UzDaewoo.

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What could be causing a P0013 engine code to turn on and off on a 2.4L Ecotec in 2014 Buick Verano?

Recently, my 2014 Buick Verano's (2.4L Ecotec engine) check engine light came on. It would turn on and off seemingly randomly though between engine starts. I took it to a retail auto parts chain to ...
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Cars with no ACC power

I have a car that wouldn't turn on the cigar power supply when the key is on the ACC position. It comes on when I put it in the IGN, so I'm pretty sure this is by design. This is a horrible design for ...
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How to repair windshield wipers that get stuck in an upright/vertical position when turned off?

I recently started having this issue on a 2002 Chevrolet Impala, where the wipers get stuck in an upright position after wiping and won't go into the parked position when turned off. It appears to be ...
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Car takes long to shift gears while stationary

I have a sports car that recently started acting up when I change gears from Reverse to drive. I have two main issues that surfaced recently: When changing gears from park to drive, or when engaging ...
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1 answer
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'00 Malibu no crank replaced ignition completely now worse. Help!

2000 3.1 V6 Malibu – I cannot get the engine to crank. What I have done in the last 2 months; Replaced the battery – tests @ 12.98V cables off, 12.78V cables on, 12.58V with key in (KOEO) position ...
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2002 GMC Sierra Brakes spongy

I have a 2002 Gmc sierra SLT that I just picked up a few months ago. The issue is that the brakes are awful, and they appear to be an issue the previous owners were chasing down too, all calipers, ...
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Cracked block - replace just the block

I have a GM 350/5.7 marine petrol engine. The block has a large crack due to freezing. The engine itself doesn't have that many hours on it, so the other parts should be quite OK. Is it possible to ...
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2 answers
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Should Dexcool be switched for another coolant in a GM 3800 V6?

I'm looking to buy a low mileage ( 100k km / 62k miles ) 03 Buick LeSabre for my wife. The 3800 V6 runs Dexcool, and I've heard horror stories about Dexcool, but I've also read other opinions that ...
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3 votes
2 answers
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Removing stuck water pump - GM Corsa B

I have a GM Corsa 1.0 MPFI (Brazillian version of the Opel Corsa B) and today I started replacing some parts, including the water pump. I had heard from other owners and mechanics that sometimes this ...
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2 answers
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Low compression in one cylinder with a misfire code, but no smoke in the exhaust

Chevy V6 4.3 with 281k miles. It recently threw a misfire code isolated to cylinder #3. The misfire seems systematic and not random, though, as it idles rough. I've got an open question on it already, ...
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Chevy Blazer 4.3 with p0303 error (cylinder 3 misfire) shortly after running medium-hot: now wonky idle, but smooth at high RPMs

I've got a 97 Chevy Blazer with the 4.3 and 281k miles. It might be of-note that a shop replaced my Lower Intake Manifold gasket about 18 months ago. At the very end of a long trip this weekend it ...
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I need the male end of a cable connector that mates with THIS female connector

I have a Jeep Wrangler in which I've had a 5.3L Chevy LS engine installed, along with the GM ECU, a custom radiator and a GM radiator fan (from a 2017 Camaro I believe). The radiator fan has this ...
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testing auto 4L60E transmission while not in vehicle

is it possible to test while not installed in vehicle my auto 4L60E transmission
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3 votes
1 answer
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Can I spray paint a engine's heat shield?

While planning some tasks for "restoring" my engine bay, I noticed one of the things that significantly affect the way it looks is the heat shield. It's rusty, since the corrosion was probably much ...
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2005 Pontiac Grand Prix GT Radio Theftlock

Blew the bulb in my stock radio, picked up another radio from the junk yard, and of course there's the theftlock (I should've known). I've read about being able to get a code by holding down various ...
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Revs go up, but car doesn't increase in speed while shifting. Trouble accelerating

I have a 1.2L Corsa B automatic, and I'm having trouble accelerating. I can only get to 60 mph slowly on flat roads, and about 30-40 on a hill but 70-80 mph downhill. I can feel it hesitating when ...
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2 votes
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Resting a radiator on metal brackets

I have recently replaced the radiator in my 2006 Pontiac g6 GTP 3.9L. While installing the new unit I neglected to install the rubber feet between the rad and the frames lower bracket, which the rad ...
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Bought OBDII tool - System too rich

My 04 Isuzu Rodeo has had a too rich code for some time now. I definitely smell the fuel out of the exhaust. In the last 6 months I have had the following done to try to fix this issue: New spark ...
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Did a Century/W-Body/GM Issue Exist Due to Chafing Wires Under the Dash?

I am trying to find out if an issue is a common flaw. Sixth Generation Buick Century's (1997-2005) Maybe all W-Bodies, or even all GM's of the era, I am not sure. But lets focus on Sixth Gen ...
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GM Vortec 5.0 CSFI - Failure Symptons

Based upon my research, the CSFI systems used in GM's Vortec engines during the mid to later 90's are problematic. As such, it does not appear uncommon to convert these to MPFI system. I have a 96 ...
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2 votes
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GM 6l90 transmission swap

I have a 2012 Chevy Express van 2500 with a 4.8l motor and 6l90 transmission with 200k miles. I bought a used 6l90 with 77k miles from a junk yard, that came out of an identically van. Same year, 2500,...
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3 votes
1 answer
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High O2 voltage paired with high LTFT reading

What is likely culprit when O2 pegs at .9 volts and stays there indicating engine is rich. Then as this continues for 15 - 30 seconds, the LTFT eventually climbs to +25% or more. Computer calculates ...
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2000 Pontiac Grand Prix Idles at a higher temp than normal

I've just changed my oil and originally put diesel oil into my 2000 Pontiac Grand Prix accidentally, but removed it before ever turning it on and put the correct oil in. Now 1000 miles later, it sits ...
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1 vote
2 answers
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GM power steering fluid -- what kind do I need?

I have a 2007 Pontiac G6 (3.5L V6) that needs power steering fluid. However, I do not know what type is compatible with my vehicle. My manual simply says: GM Power Steering Fluid (GM Part No. U.S....
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4 votes
1 answer
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Where can I get a comprehensive list of GMLAN Symptom category codes?

GM and several other manufacturers have added additional information to the 5 digit codes. These are not “codes” but are “Symptom categories”. The DTC symptom is made up of an additional 2 digit ...
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5 votes
1 answer
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Valve lifters hitting camshaft when hand cranking

I have a 2000 Chevrolet Malibu 3.1. I changed the head gaskets the intake manifolds and the valve stem seals. Before starting the engine and putting everything 100% back together , I wanted to make ...
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1 vote
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Possible Bad Pressure Control Sol. in my 4l30e?

I rebuild the 4l30e in my Isuzu Trooper recently. The transmission shifted great and everything seemed ok. Time went on with the trooper as my daily and everything continued well. I passed 1k miles ...
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2 votes
0 answers
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Cadillac CTS "Traction Control Off" displayed after driving 15 mins

After driving 15 mins the "Traction Control Off" light is displayed on dashboard and radio displays "Service Brake Assist". All go away after engine is turned off for about 20 mins. It recently got ...
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2 votes
0 answers
1k views

Corsa C electric power steering ECU 12V power polarity

I need to know the power polarity of Corsa C Electric Power Steering ECU 12V power connector. I suppose the power is the right connector in following photo (it has 2 flat pins vertically aligned): If ...
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5 votes
1 answer
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01 Grand Prix No Crank when it sits in the hot Sun

Strange issue with a 2001 Grand Prix (3.8L vin K) No crank when the car sits in the hot sun for a few hours, has nothing to do with a engine hot soak. All dash light seem to pilot, just no crank. If ...
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4 votes
1 answer
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GM's "Quad 4" Engine

The Quad 4 was a 4-cylinder, 2.3 liter engine GM designed in the late 80's and produced 180-190 hp depending on the level of tune. Impressive numbers on paper when the 5.7 liter V8 engine in the ...
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1 vote
2 answers
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Failure in A/C compressor due to flood?

I've changed my car (Brazilian GM Classic) oil and after the change the A/C stoped working. I've asked for the car dealearship I've changed the oil to check it up. The diagnostic was that the A/C ...
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4 votes
1 answer
88 views

What action to take when GM Goodwrench breaks something? [closed]

I'm just back from GM Goodwrench for an airbag recall. The part in question is as you see in the picture. It looks like a fresh break, and the repair required pealing the carpet partly back, but I ...
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15 votes
3 answers
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Why does GM still insist on push rod engines?

GM continues to design and produce push rod (Over Head Valve or OHV) engines while most of their competitors have gone to over head cam (OHC) configurations for their performance engines. Is there a ...
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5 votes
0 answers
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GM 4L60-E Rebuild Questions - Part 1

I am in the process of rebuilding my first 4L60-E (I've done a 4L30-E before) and I had a couple questions. 1st: In terms of the input drum pistons I know there are both aluminum and steel models, ...
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2 votes
1 answer
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Transfer Case Options 4l60e

I am currently in the process of rebuilding a 4l60e which will go into a 4x4 go-kart. I am now in need of a transfer case that will bolt up. Are there any manually shifted (not dash button) transfer ...
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8 votes
1 answer
168 views

Why would headlights stop working after turning over

I have a 2006 Pontiac G6. When I walk up to the vehicle and unlock it, the headlights turn on. After I get into the vehicle and turn it over, I cannot turn the headlights back on. Fog beams and turn ...
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9 votes
3 answers
862 views

Magnetic Active Suspension or Magnetorheological Damper

GM developed magnetic dampers for the Corvette several years back. What is magnetic active suspension and how does it work? I understand there is a magnetic fluid in the shocks but how, deep down, ...
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1 vote
1 answer
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What is the drive cycle for OBD-II equipped GM vehicles?

As the title states, what do I have to do to get through the drive cycle for OBD-II equipped GM vehicles?
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3 votes
3 answers
12k views

Live scan tool for OBD 1.5 GM transitional?

1995 S-10 Blazer 4.3L Vortec V6 (vin W) with Powertrain Control Module (PCM) 1995 was the OBD transitional year for GM. The PCM itself is OBDI, but the interface connector has the 16-pin D-style ...
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3 votes
1 answer
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2006 Solstice - car won't turn over following engine replacement

I recently installed an engine (complete from oil pan to the valve cover) from a 2010 Malibu in my 2006 Solstice. (Replacing a blown engine.) The car will not crank / turn over. Symptoms include: My ...
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4 votes
1 answer
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What is Opel/Vauxhall's TwinPort Technology?

Some Opel Engines come with something called TwinPort Technology. I guess that this increases power, as the original Z12XE (1.2) engine has 55kW, and the TwinPort (Z12XEP) version engine has 59kW of ...
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1 vote
2 answers
531 views

New breaker points not working

I'm trying to replace the breaker point on my 1980 Oldsmobile, trying to fix some spurious misfires and engine stalls. The car was converted to gasoline in the early nineties or late eighties, engine ...
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1 vote
1 answer
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Will anti-Freeze leave behind residue?

I bought a used 93 3.1 GM long block engine with 19,633 miles in 2014 from a yard that I found on the internet. The engine was pulled in 1996 and stored by the yard. I did a title search/check to ...
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4 votes
1 answer
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Repair or replace frayed fuel injection wiring harness?

This is on a 2008 Chevy Impala, 3.5L V6, non-flexfuel. Recently got cylinder 1 misfire / ignition failure codes. An investigation revealed that mice had gotten into my garage, made themselves at ...
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2 votes
1 answer
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2002 Impala 3.8L V6 thermostat gauge starts below cold then creeps toward red

My 2002 Impala 3.8 has been running great. However, this summer the thermostat gauge stopped reading temperature right. To the point it wouldn't move even after it had been running for hours. It would ...
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1 vote
3 answers
131 views

Noisy stereo when engine running

I have a 2009 Holden Barina. I turned the car on to "Accessories" and the radio was working fine. I turned the car on, and now there is a noise coming from the speakers and no music. The same thing ...
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2 votes
3 answers
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How to tell if an 08 CTS has a limited-slip differential?

I'm looking at purchasing a 2008 CTS RWD. From what I could gather from various forums, it sounds like a limited-slip was only included if you purchased the "summer performance tires" package. I ...
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2 votes
3 answers
72k views

Low beam headlights out, High beam working

The patient is a 1996 Chevrolet Caprice with dual-filament bulbs. Both filaments in both bulbs light up in high beam mode, but no filament on either bulb lights up in low beam mode. What could be ...
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9 votes
1 answer
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Can I use an OBD2 Scan Tool on older GM vehicle?

I can get an adapter that connects my OBD2 scan tool to my 12 pin GM scan tool connection. But will the tool be able to read the codes and tell me anything useful? Or do I need to get a scan tool that ...
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