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Prev Professional Automotive Repair Technical Discussions for September 24, 2013
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Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CX 3.4L Odometer/fuel gauge VIN: 3G5DA03E32
After swapping out the engine with a rebuilt unit every thing working as designed. An interesting job. the BCM was disconnected during the swap out. After starting engine to test for any leaks or other problems I noticed that the odometer was showing a "ERROR"...
1989 Cadillac DeVille 4.5L headlights VIN: 6D47S9C393
the headlight's work intermittently, all on at once, dimmer has no effect. really just need a wiring diagram with the headlight switch terminals identified. this car is a Deville rwd,7.0 engine. has twilight sentinel and auto dim. The fuse link at the starter ...
2000 Cadillac DeVille 4.6L Electronic VIN: 1G6KD54YXY
I have this caddy that keeps setting codes 1222 and 225.most of the time it works fine.sometimes it goes out og gear when it starts to change.sometimes it chandes fine.sometine it jerks when you put it in gaer and sometimes it does not.on the insturment cluste...
1974 Chevrolet C-60 366CID Hydrovac Power brakes
I have a 1974 C-60 with a tandem hydrovac system. It has TWO SEPERATE units with a dual piston master cylinder. There are two separate brake hoses to the rear wheels. I canít find a metering device. The thing looks like it splits the front system between both ...
1987 Chevrolet El Camino 4.3L Poor Idle Quality, Stall VIN: 3GCCW80Z3H
Stalls & no power
1998 Chevrolet Express 1500 LS 5.7L No Start VIN: 1GBFG15R8W
hi guys I have this van (98 chevy gladiator van) and i'm looking for the passkey module so if you happen where it is at and how to get to it i'd love to here from you. My information tells me it's under the center of the dash so i took the engine cover out and... Trouble codes: B2960
1999 Chevrolet K3500 5.7L Poor Idle Quality VIN: 1GBJK34R1X
Hi thank you for reading this truck has been giving me hard time truck runs and drives great until engine is at operating temp truck will start to surge only in drive or reverse stopped. I have checked fuel pressure 58psi,took off throttle body and cleaned tak...
2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNDT13S63
Hi everyone! Have this new customer that came in with the MIL on with p1345. By looking the actuator saw oil on connector so recommended a new one. Customer told me he had replaced not so long ago but agreed to put another one but two days later he came back w... Trouble codes: P1345 (Cam/ckp correlation)
2004 Chevrolet Silverado 2500 HD 6.6L Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCHK23264
Buddy called me about this and said it was working fine and then just started making all kinds of noise from under the hood. When I got to it, it struggled to start and was fuel hammering. I spoke to my buddy and he has never put a fuel filter on it since he o... Trouble codes: P0202, P0203, P0205, P0208, P2149
1996 Pontiac Sunfire SE 2.4L ignition VIN: 1G2JB12T2T
Ok Customer calls and tells me his car will not start. He drove it home from work and now will not crank over. I went to his house and gave him a push and he poped clutch and it stated. We drove it to shop where it sits today. Will not crank. After a short dia...
2006 Pontiac Grand Prix GXP 5.3L ebcm VIN: 2G2WC58C06
co236. ebcm ???

Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Park Avenue 3.8L Surge VIN: 1G4CW54K31
I received a lot of good information and suggestions that I tried from everyone. It looks like Doug from NJ got this one right. I have not done the actual repair but the data from the scan tool shows the tcc solenoid duty cycle is around 40-50% when crusing ...
2000 Cadillac Seville STS 4.6L Starting VIN: 1G6KY5492Y
Thanks to all that replied to the help request. We replaced the ignition switch with a factory part. The crank delay still exists. I would think the theft modual was next to replace. The battery draw we found to the dash cluster, a curcuit board at the back of...
2002 Chevrolet Tracker 2.0L timing chain VIN: 2CNBJ18C02
After carefully inspecting the camshafts for any signs of binding up or bearing journal scoring, we determined that GM has an updated reinforced top timing chain guide. This guide is not part of a kit and must be ordered individually through the dealer. We did...
2003 Chevrolet Tahoe LT 5.3L No Start VIN: 1GNEK13Z53
Thank you everyone who offered your help. We kept feeling we were having an ignition timing problem. We finally checked our crank sensor square wave signal on our lab scope though it wasn't easy to access the wiring harness. Nice clean pattern at crank sensor ...
2007 Chevrolet Impala LS 3.5L pcm/bcm VIN: 2G1WB58K57
I would like to start out saying that Jeff from Pa.started me thinking in the right direction regarding the BCM. I assumed that when I sent out the unit to be "fixed" at Automotive Electronic Solutions that they knew what they were doing and as it turns out th...
2000 GMC Safari SL 4.3L No Start VIN: 1GKEL19W8Y
this normally will not start on carb. cleaner. it takes 60 psi fuel. I tried firing inj. with my scanner but it did't work. I must be getting old. forgot that I had tester for the injectors, plugs right in and can ohm or fire them. they all test good. don't kn...
2004 Hummer H2 6.0L powersteering VIN: 5GRGN23U54
Hello Thank you for all the replies . After several days of trying things and checking pressures through out the system . I am to the conclusion the pump was bad . I took the Hydra boost system off and had it checked and all was reported back good . we checke...
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