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Prev Professional Automotive Repair Technical Discussions for August 29, 2011
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Open Help Requests for GM
Help Request Answers
1996 Chevrolet Camaro 3.8L Eats ignition coil's VIN: 2G1FP22K8T
I hope someone can shed some light on this. This V6(3.8) Camaro is eating ignition coils for no apparent reason. It came into our shop with a P0300 and p0420. The car was misfiring on cylinders #2 and #5. The 2-5 coil was dead. We replaced the 3 coils, plug wi... Trouble codes: P0300 (Random misfire)
1997 Chevrolet Express 1500 5.7L Stall VIN: 1GBFG15R7U
No history the van came in with a stall at times then hard to start found that it did stall at times found code p0102 maf sensor circuit low frequency ck. Eng fuse 1 and 2 ok. Then checked for 12 v at pink wire it dose ck ground at black yellow it has good gro...
2001 Chevrolet Blazer LS 4.3L Cat & evap monitors VIN: 1GNDT13WX1
Vehicle is three months past emissions inspection due date, customer disconnected battery to "reset" computer. Now he can't get the evap and catalyst monitors to run. When vehicle came in it was running bad but no codes. Found that the cam retard was around 15...
2001 Chevrolet Silverado 2500 LT 6.0L Locking front diff. VIN: 1GCHK24431
Vec. came in today complaint 4 wheel drive inop- Indicator lights on switch panel flash when put into 4 high or 4 low Tranfer case works as it should front diff does not engage.I have little info in wire schmatics -There are 4 wires to accuator at diff. I have...
2001 Chevrolet Silverado 1500 LS 5.3L Brake Pedal VIN: 1GCEK19T01
customer brought truck to me saying he did rear brakes pads and rotors with calipers because the driverside rear caliper was froze up. after customer did the repair he bleed the brake to come find out now he has no brakes at all. so customer replaced the 2 fro...
2001 Chevrolet Silverado 2500 HD LS 6.6L Misfire, MIL Lamp on VIN: 1GCHK29121
Customer states that trk sits for 2 days or more goes out to start and sets codes when she starts trk she will clear and trk runns fine till it sits again have check all wiring only thing that is odd is balance rate on 7 &8 inj is in the neg numbers i can not ... Trouble codes: P0202 (Short2), P0203 (Short 3), P0205 (Short 5), P0208 (Short 8), P1265 (Grupe 2 disable)
2001 Chevrolet Suburban 1500 5.3L Poor Idle Quality, Misfire VIN: 1GNFK16391
hi all, this one ruined my day today, otherwise it was a pefect day, truck came in p0303, misfire cyl 3 . misfire only felt at idle, runs strong otherwise. good spark, chked with spark tester traded coils with 1st cyl coil anyway, put in a new plug. inj has pu... Trouble codes: P0303
2002 Chevrolet Impala LS 3.8L Misfire VIN: 1G1WH55K22
This vehicle came in with a misfire code P0300 and has 210,000 miles on it. The misfire data shows cyl#4 is the cause on the P0300 misfire code. Naturally the spark plugs and ignition wire were in need of replacing. We started with a tune-up replacing the spar... Trouble codes: P0300 (misfire)
2003 Chevrolet Express 1500 5.3L Fuel tank fill tube VIN: 1GBFG15T63
Customer says gas fills slow and after ten dollars worth it is blowing back out at them.I checked vent solenoid,next I unhooked vent tube from tank to charcoal canister.When I blow into tank through fill hole with a blow gun pressure starts to build and after ...
2011 Chevrolet malibu 2.4L Airbag VIN: 1G1ZC5E17B
This is collision car hit on driver side. Replaced both front pretensioners+ SDM then performed sdm handshake. module comes up with both right and left rear pretensioner faults. the codes are B0032 B0039. This car has no rear pretensioners that are controlled ...
1991 GMC K3500 Sierra 5.7L Stall, excessive fueling VIN: 1GDJK34K2M
Hey there fellow techs, So this GMC 3500 4X4 dually comes in, it had a hard time starting with rough idle and stalling. We inspected the ignition system, (5.7 liter V8 gas) and found the cap and rotor to be faulty, we replaced them along with the plugs and wir...
2000 GMC K2500 Sierra SLE 5.7L No Start VIN: 1GTGK23R9Y
Hi group my mechanik replaced the engine in this p/u. Now he has a no start condition!! he checked all fuses relay's all good.rpm signal is ok.165 to 196 cranking rpm. Fuel spark is ok, what he is missing is the injector signal, power is ok but no ground.!! i...
2001 Oldsmobile Aurora 4.0L d/s power window VIN: 1G3G564C91
2001 Olds Aurora driver window inop...Ok I checked circuit breakers under rear seat, good Pulled door panel and checked for power at the lift motor, no power Checked for power with a test light out from the master switch ,popped trunk, fuel door actuate door l...
1996 Pontiac Grand Prix 3.1L No Start VIN: 1G2WJ12M8T
ok guys this one has me scracthing my head, car came in with a no start. tested fuel and fire, both are there and present. fuel pressure is at 45 psi, and i have fire out of all 6 spark plug wires. scanned car and found no trouble codes. Iev watched the cam, a...
2001 Pontiac Grand Am GT 3.4L No Start VIN: 1G2NW52EX1
helping on of the other techs on this one. Vehicle is a crank/no start. fuel pressure is 55 psi. good spark. rpm signal when cranking. theft light comes on then goes off(normal). plugs are dry and there is no sound from injectors when listening w/stethoscope. ... Trouble codes: B3031

Fixes & Summaries for GM
Fix/Summary Answers
2003 Buick Rendezvous CX 3.4L temp. gauge VIN: 3G5DA03E33
after checking all out i found leak coming from head gasket. replaced rechecked and all ok thanks everyone and sorry for being late to close
1998 Cadillac DeVille 4.6L compressor VIN: 1G6KD54Y8W
hey everyone it's blowing 40* air out of the vents. dave from virgina sent the reply that finaly got me to replace the ac temp sensors. he said they should both be at the same RESISTANCE when the compressor is off and has not run for a while. When i teste...
1989 Chevrolet K3500 Silverado 7.4L Hesitation VIN: 2GCHK39N5K
i found tsb that describes what i have here and im going to try and find new ecm and prom . tsb is for egr code and pinging i don't have egr code but when it is unhooked symptom is almost gone .
1997 Chevrolet Camaro 3.8L Poor Idle Quality VIN: 2G1FP22KXV
Well... I didn't get this one fixed. I have a mobile diagnostic/ECM flashing business. As stated the shop had already spent a ton and then I uncovered the fuel trim and catalytic converter failing on top of the idle problem the shop got cold feet. The vehicle ...
2006 Chevrolet Avalanche 1500 Z71 5.3L MIL Lamp on VIN: 3GNEK12Z46
thank you all for the replies. the evap code was easy to fix, vent solinoid. on the o2 codes, the dealer must not have cleared the computor and drove it. We cleared and drove all week and no codes returned, again thanks for the repies. Trouble codes: P0053, P0054, P0059, P0060, P0449.
2004 GMC Sierra 1500 SLE 5.3L rotors VIN: 1GTEK19V64
Thanks for all the replys.Checked each one.master was not leaking or have fluid between it and booster.Pins were free as well as pads moved free.We replaced the pads and rotors with gm parts and seems to be ok.The old ones looked ok and not real glazed .Thanks...
2006 GMC Sierra 1500 SL 5.3L Misfire, MIL Lamp on VIN: 2GTEC13Z96
Found exhaust lifter on number 5 cylinder roller locked up briefly. The roller damaged the camshaft lobe and the roller on the lifter was damaged accross 25% of the face of the roller. Installation of a new camshaft, and lifters on one bank corrected the misf... Trouble codes: P0305.
2003 Pontiac Aztek 3.4L Poor Idle Quality VIN: 3G7DA03E83
WOW!!! ITS FIXED... YEAH... So First of all i would really like to thank Russell from Illinois (Go Bears) and Joe from Rhode Island. And I cannot forget Thomas, David and John either. With out you we could not have fixed this you guys pointed us in the right d...
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