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Prev Professional Automotive Repair Technical Discussions for January 27, 2014
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Open Help Requests for GM
Help Request Answers
1989 Chevrolet Camaro Iroc-Z 5.7L Excessive Emissions, No Start, Misfire VIN: 1G1FP2185K
Need help on this one.this car came into my shop a few years ago with a shorted fuel injector replaced fuel injectors and replaced computer and car worked fine for two years. I know cause i bought it from the old owner. Car drove great with no problems then on...
1993 Chevrolet Corvette 40th Anniversary Edition 5.7L Excessive Emissions, Hesitation, Surge, Stall, Poor Fuel Economy VIN: 1G1YY23P6P
Vehicle came to us with complaint of sluggish response from a stop and misfires while at cruise speeds. Scan the vehicle no codes were present. Road test the vehicle monitor scan data and found that the low resolution sensor in the distributor was erratic at c...
1996 Chevrolet Cavalier 2.2L Misfire
has 3 #2 MISFIRE injector was changed ,compresion 140 + on all cyl. has new plugs. shows good wave for ign. different coil was tried and no change. Trouble codes: P0302
2002 Chevrolet Silverado 2500 HD 6.6L monitor,smog check VIN: 1GCHC23172
I cleared the codes,resetting monitors and am having trouble with EGR monitor not completing.need to have it complete to pass smog check.Drove several times as instructed "drive cycle" cold start below 50 celcius(120 f).let idle fans on ac on 3 ... Trouble codes: P1093
2003 Chevrolet Silverado 1500 5.3L transfer case VIN: 1GCEK19T73
no 4x4 no communication with scan tool
2003 Chevrolet Silverado 1500 LS 5.3L MIL Lamp on
Code p1516, I have not been able to duplicate problem.scanner shows app aver 22%,app angle 29%, tpdesired ang 28%,tp indicated ang35%.I have not worked on many of these and did not want to throw parts at it.I think the throttle body needs to be replaced.Is the... Trouble codes: P1516
2006 Chevrolet HHR LT 2.4L valves rockers VIN: 3GNDA23P56
engine was running fine, then engine died and has no compression. We removed cam cover and found 8 broken rockers and air leaks out of the intake, I have bent valves. Has anyone seen this before.
2007 Chevrolet Uplander 3.9L rear heat VIN: 1GBDV13127
Vehicle came in for a safety inspection from one of our used car dealer customers. I first take it for a ride and noticed after a while getting no heat from front heater. Got back to shop and checked rear heat , was also blowing cold . Gauge was running a hair...
2009 Chevrolet Silverado 2500 HD WT 6.6L abs module VIN: 1GCHK49619
Truck came in with a C0245 wheel speed sensor frequency error. Speed-o off a little on test drive. watched right front and left front wss and they are the same rear speed sensor is about 20% slower all the time abs light on brake light on. no Diagnostic help ...
2006 Hummer H2 6.0L light on VIN: 5GRGN23U96
Need help from GM gurus;Customer states he hit a bump and abs light popped on. Got code C0050 Right rear wheel speed sensor circuit. replaced sensor with new one; same thing; code comes right back. checked play on RR wheel-ok. checcked wiring and connectors; i...
1997 Saturn SL2 1.9L Driveability VIN: 1G8ZK5275V
Thanks in advance for any insight. This car is coming to me from another shop. I have been told that it locks up after driving about 100 yards, before it does however every gear works fine to include reverse. When it is "locked up" there is no reverse just 1 f...
2005 Saturn Ion-2 2.2L Mechanical VIN: 1G8AZ52F95
Replace engine and clutch and slave. drove the car 100 miles then shipped the car . Got a call this morning no clutch. I had problems bleeding this but it was ok but not great when i shipped. Any one got any ideas on bleeding this. It does not have a bleeder s...

Fixes & Summaries for GM
Fix/Summary Answers
2006 Buick Lucerne CX 3.8L No Start, Poor Idle Quality, MIL Lamp on VIN: 1G4HP57206
Well a good cleaning did the job. (so far) It seems since the throttle body is clean, the computer is shutting down in 15 minutes. Noticed after cleaning, when cycling the igntion switch, the computer tests the throttle, a possible calibration? The throttle ... Trouble codes: P0068.
2010 Buick Enclave CXL 3.6L Both Front Cornering lamps VIN: 5GALRCED8A
The customer had informed me incorrectly. These lights do not come on while turning,(like his old Lincoln) they are Daytime Running lights, DRL's. Still the circuit is powered by the Park lamp fuses, there are 2 10 amp fuses. Both were good, Park lamp relay, P...
1996 Chevrolet S10 2.2L Stall VIN: 1GCCS1444T
I have had this s-10 for two weeks & have not had it act up. I replaced the crank sensor, cleaned the fuel pump ground & replaced the fuel filter. Don't know if it fixed it yet but I'm giving it back to the customer to drive. If it would act up I will let you ...
2002 Chevrolet C3500HD 6.5L Cuts out, Stall VIN: 3GBKC34F02
Well after a new OPS fuel rail pump Inj pump ign switch pulling the tank and finding nothing wrong there- I am going to try to see if the balance module has failed. Supposedly this had been superceded three times- and does power the pumps. It used to ha... Trouble codes: 1643 (glow plugs).
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