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Prev Professional Automotive Repair Technical Discussions for February 17, 2012
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Open Help Requests for GM
Help Request Answers
1995 Buick Park Avenue 3.8L Cooling Systems VIN: 1G4CW52K5S
Hello all, and thanks in advance. As stated this is a regular customer of ours and we have done lower intake and new plenum less than a year ago. Car came back in yesterday with a radiator full of BROWN milkshake. The oil is about 2 quarts low on the dipstick....
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1995 Buick Regal Custom 3.1L Cooling system VIN: 2G4WB52M3S
First, thank you for your time, car came in with overheating complaint. When started cold after about 5 minutes it starts blowing anti freeze into the overflow (radiator cap tests good). When we tested for a bad headgasket with hydrocarbon fluid it showed bad ...
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1994 Chevrolet S10 Blazer Tahoe 4.3L fuel pressure VIN: 1GNCS13WXR
fuel pressure is fine while running and under load but goes down when the key is off
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1996 Chevrolet K2500 Cheyenne 5.7L No Start VIN: 1GCGK24R5T
Customer called in for a tow. truck died. Assumed fuel pump so I took pressure guage with me. Excellent fuel pressure. Truck started so customer started for shop and truck died 100yds down the road. Towed into shop. Ran codes and got PO1345 but decided to chec... Trouble codes: 1345 (cam/crank corelation.)
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2000 Chevrolet Monte Carlo SS 3.8L No Start, Stall VIN: 2G1WX12K0Y
i have this monte carlo that dies when you take the gas cap off while it is running we have put a fuel pump from the dealer, maf sensor OE, upper intake, fuel filter and it has no codes in it i have never seen anything like this before wanting to know if any o...
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2003 Chevrolet S10 2.2L No Start VIN: 1GCCS14H43
Hello Techs. I need help and advise with the pick up, it acting unused way. The Pick up truck drove in for replace the front brake job and 2 front rotors, after finish the work try to move the vehicle to the parking lot, it start and shut off right away, it wo...
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2004 Chevrolet Silverado 3500 LS 6.6L Engine Oil VIN: 1GBJK33114
Just drained the oil on this truck and it was way overfilled. Also very thin looking. I think its got diesel in the oil. Dont know much about these engines. Is this an injector problem or can it be something else?
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2005 Chevrolet Uplander LS 3.5L MIL Lamp on VIN: 1GNDX33165
After a few weeks of driving the SES will set 420 as a Catalyst System Low Efficiency. I have checked back preshure (ok) and inspected with frontside of converter with bore scope (no problem). While watching the upstream and downstream O2s together the upstrea... Trouble codes: P0420
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2007 Chevrolet Silverado 1500 Classic WT 5.3L MIL Lamp on VIN: 1GCEK19B17
Within 100 km, CEL 0n again, this time with both sensor codes. Is there any known pcm or extended harness issues known with this vehicle? Power is way down but seems to come back intermittently depending on throttle position. Do these codes cause the timing to... Trouble codes: P0327 (p0332-), P0332
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1995 Geo Metro 1.3L lifters
This metro has a rattling noise caused by valve lash clearance. Vehicle was run for 20 minutes after the head was replaced. Four of the lifters were not pumped up so we replaced them. After running the engine, again, for 20 minutes it still had two lifters not...
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2000 GMC C3500 Sierra SL 5.7L Exhaust VIN: 1GDJC34R7Y
Not really a repair question but more of a parts supply issue. This cab and chassis C3500 has a bad rear cat. I attempted getting an aftermarket from my supplier but the only thing that is right is the gasket. Called the dealer and the only thing available is ...
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2001 GMC Sierra 2500 HD SL 6.6L Hydro Boost VIN: 1GTHC23141
Good morning, my customer stated that after making a hard left hand turn he began to hear a noise when ever he turned the steering wheel or pressed on the brake pedal. This 6.6 L Dura Max diesel has a Hydro Boost system. After a while the noise disappeared, bu...
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2003 GMC Sierra 1500 SLE 5.3L compressor clutch VIN: 2GTEK19T13
Truck came in with no compressor clutch engagement. Compressor, clutch, drier, orifice, all new. Tech grounded clutch manually, clutch now engaged, will not disengage. Temperature changes in both zones, (automatic air), compressor stays engaged even with switc...
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2001 Oldsmobile Alero GX 2.4L Hesitation, Stall, No MIL after stall VIN: 1G3NK12T11
Typing for my brother, Fred. We thought we had this problem solved with the ignition switch (see related history). The car ran fine for several miles before the stall occurred again. The engine will abruptly stall on a snap throttle. Sometimes, it will only st...
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Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick Terraza CXL 3.5L steering VIN: 5GADX33L25
Sorry I could not fix this one atleast not yet. Told the cust about what it could be and he said ill just live with it for now. The problem got better after a long drive but he took it and I havn't heard or seen him since the day I posted my question. Thanks f...
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1999 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GCDM19W1X
ACCORDING TO [...] DIAGRAM THE TAN\WHT WIRE GOES TO O2S3 FROM PCM BUT IT ALSO SHOWS THE WIRE GOING BACK TO TWO OTHER PINS AT THE PCM BUT THEIR PURPOSE IS NOT LISTED.WHEN CKT WAS OVERLAYED DID NOT ACCOUNT FOR THIS,AND IS WHY VOLT WAS STUCKAT.451MV BECAUSE CK...
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2005 Chevrolet Trailblazer LS 4.2L Starting VIN: 1GNDT13S45
I would like to thank everybody that took time to read and post. I did indead find a shorted wire like most said. I cant believe how much stuff is powered off a 10amp fuse. Everything from the brake lamp switch to the insterment cluster to the pcm to the start...
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2005 Chevrolet Silverado 2500 HD 6.0L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1GCHC24U85
Joshua, that's why I unbolted the exhaust at the manifolds. The PCV hose and evap are the only vacuum points on this engine. Kent, that will not work on any of these newer engines. 10 years ago that would have worked so, that is why they changed it, that made ... Trouble codes: P0101.
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2005 Chevrolet Silverado 2500 HD LS 6.6L Hesitation VIN: 1G45K563G5
thanks to the five techs that replied to so after installing the new ficm and disconnecting the battery i was able to final get the code to clear i believe it had something to do with the after market programer that was on it however after i cleared the code ... Trouble codes: P1296 (p1296 injector circuit high to low current transition time bank 2).
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1994 GMC Sonoma SL 4.3L Ecm/Iac VIN: 1GTCS14Z3R
After vehicle returned with a code indicating prom error, we bought a used PCM and used the prom from it in our new PCM. the vehicle returned again two days later with the same concerns. We checked our notes and realized that code (prom error) did not happen...
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1995 GMC G2500 Vandura 5.7L not shifting/lite VIN: 1GDEG25K8S
customer brouhgt car back yesterdy for us to look it over again all is well 2 weeks ago we found broken wire behind battery box connecter was brokken when the customers son replaced the battery and never told us problem started after that thank youm to all who...
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